WO2008072653A1

WO2008072653A1 - Mobile terminal device, and image selecting method

Info

Publication number: WO2008072653A1
Application number: PCT/JP2007/073921
Authority: WO
Inventors: Kazushige Yamada; Toshimasa Takaki
Original assignee: Panasonic Corporation
Priority date: 2006-12-15
Filing date: 2007-12-12
Publication date: 2008-06-19

Abstract

Provided are a mobile terminal device capable of sharing image data easily with another mobile terminal device, and an image selecting method. Image receiving means (104) notifies image selecting means (106) of the image data received through communication means (101), as an image record. On the basis of the decision of the image selecting means (106), the image receiving means (104) either stores the image record in storage means (105) or scraps the image record. The image selecting means (106) accepts the received image record from the image receiving means (104), and retrieves a photograph having the same composition as that of the received image record, from the storage means (105) by using featuring point comparing means (108), on the basis of the setting by policy setting means (107).

Description

Specification

Portable terminal device and image selection method

Technical field

The present invention relates to a mobile terminal device having a communication function and an image selection method.

Background art

[0002] Some portable terminal devices such as digital cameras in recent years have a wireless communication function and can immediately send a photograph taken to an image server on the Internet. For example, when an attendee takes a photo with his / her camera or camera-equipped mobile phone terminal at an event such as a wedding ceremony, all the images are sent to the image server by sending the photograph taken by each participant to the image server. Management, and participants can share images via the image server

[0003] However, in order for each participant to collect photographs using the above-described technology, it is necessary for each terminal to acquire the address of the image server and to have an environment in which the image server can be accessed. Become.

[0004] On the other hand, if it is possible to directly send and receive photos between mobile terminal devices on the spot without going through the image server, the environment such as the Internet is not necessary, and the address of the image server is taught. This saves the time and effort of sharing image data more conveniently.

[0005] As a technology for directly transmitting and receiving images between a plurality of cameras of this type, a digital camera in the vicinity is provided with means for acquiring a list of digital cameras, thumbnail lists, and image data that exist in the vicinity of the mobile terminal device. A system has been proposed to select one of the images, obtain a thumbnail list, select a desired image from the thumbnail list, and download the image data! Reference 1).

[0006] In addition, in order to share images taken by customers in a certain area such as a party venue or an event venue, the receiver-side camera sends a photo data acquisition condition to a nearby camera in advance. It has been proposed to send only photo data that matches the conditions with the camera on the sender side to the receiver side (see, for example, Patent Document 2). [0007] Patent Document 1: Japanese Patent Application Laid-Open No. 2003-234987

Patent Document 2: Japanese Patent Application Laid-Open No. 2004-179920

Disclosure of the invention

Problems to be solved by the invention

[0008] However, if a photograph is to be shared by the method described in Patent Document 1, a user who wants to obtain a photograph must select the desired photograph from a large amount of image data, which is complicated. It is.

[0009] In particular, when an event is progressing! /, A photo is shared on the spot! /, And if the technique described in Patent Document 1 is applied, an operation for obtaining a thumbnail list, and Since the user needs to perform an operation of selecting and downloading a desired image by looking at the thumbnail view, the user may not be able to concentrate on the event. In addition, it is even more difficult for a user to take a picture by himself / herself! // and to obtain a picture taken by another person by the method described in Patent Document 1. Therefore, the technology described in Patent Document 1 is not applicable in the event that an event has progressed!

[0010] In addition, the method described in Patent Document 2 also receives and records photos that are not required for broadcast communication, and if there are many recipients, the sender has a huge amount of computation and memory. Is required.

[0011] The present invention has been made in view of the above-described conventional circumstances, and it is an object to provide a mobile terminal device and an image selection method capable of easily sharing image data with other mobile terminal devices. Say it.

Means for solving the problem

[0012] A mobile terminal device of the present invention includes an image receiving unit that receives image data from another mobile terminal device, image data received from another mobile terminal device, and image data stored in a storage unit. And image selecting means for storing the received image data in the storing means in accordance with a preset image selection criterion based on the comparison result of the image comparing means.

The invention's effect [0013] According to the present invention, if image selection criteria are set in advance, the received image data can be selectively stored according to the priority, so that the memory capacity can be used effectively. Therefore, it is possible to easily collect desired image data without performing complicated operations. Brief Description of Drawings

FIG. 1 is a block diagram showing a configuration of a mobile terminal device according to a first embodiment of the present invention.

[Figure 2] Examples of policies that can be selected by policy selection means (1)

[Figure 3] Examples of policies that can be selected by policy selection means (2)

FIG. 4 is a flowchart for explaining an operation procedure when registering an application management table by the mobile terminal device according to the first embodiment of the present invention.

FIG. 5 is a block diagram showing a configuration of a mobile terminal device according to a second embodiment of the present invention.

FIG. 6 is a flowchart for explaining an operation procedure when registering an application management table by the mobile terminal device according to the second embodiment of the present invention.

FIG. 7 is a block diagram showing a configuration of a mobile terminal device according to a third embodiment of the present invention.

FIG. 8 is a flowchart for explaining an operation procedure during a received image saving process by the mobile terminal device of the third embodiment of the present invention.

FIG. 9 is a block diagram showing a configuration of a mobile terminal device according to a fourth embodiment of the present invention.

FIG. 10 is an explanatory diagram when the image comparison means 120 is made to function as the subject number comparison means.

FIG. 11 is an explanatory diagram when the image comparison means 120 functions as a facial expression comparison means.

FIG. 12 is a schematic diagram for explaining the storage area of the storage means 105

FIG. 13 is a diagram for explaining the operation of the mobile terminal device according to the seventh embodiment of the present invention.

Explanation of symbols

[0015] 100 mobile terminal device

101 Communication means

102 Image transmission means

103 Imaging means

104 Image receiving means

105 Storage means

106 Image selection means 107 Policy selection means

108 Feature point comparison means

109 facial expression comparison means

110 Shooting time comparison means

111 Backlight comparison means

120 Image comparison means

121 Capacity detection means

122, 123, 124 storage area

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, embodiments of the mobile terminal device of the present invention will be described with reference to the drawings.

[0017] (First embodiment)

FIG. 1 is a block diagram showing the configuration of the mobile terminal device according to the first embodiment of the present invention. In FIG. 1, a mobile terminal device 100 includes a communication means 101, an image transmission means 102, an imaging means 103, an image reception means 104, a storage means 105, an image selection means 106, a policy setting means 107, And a feature point comparison means 108. In addition, the mobile terminal device (partner mobile terminal device) of the other party who wants to share the image data is connected by the communication means 101 and can communicate between the mobile terminal devices. The image data includes data of the image itself and meta information which is an example of additional information of the image data.

The communication unit 101 transmits image data in response to an instruction from the image transmission unit 102. Also, the image data transmitted by the other mobile terminal device is automatically received and transferred to the image receiving means 104. Specifically, a wireless communication device capable of near field communication such as WLAN or Bluetooth is desirable, but a wired LAN or a mobile phone network may also be used.

The image transmission unit 102 converts the image data received from the imaging unit 103 into a format suitable for transmission, and transmits the image data to the counterpart mobile terminal device using the communication unit 101. The transmission method at this time is peer-to-peer communication or broadcast communication, and is encrypted and transmitted as necessary. Details of the operation of transmitting image data will be described later.

The imaging unit 103 takes a picture according to a user instruction, and transfers the generated image data to the image transmission unit 102. The image receiving unit 104 assigns an image ID that is unique within the mobile terminal device to the image data received via the communication unit 101, and the image selection unit 106 uses the image data and the image ID as an image record. Notify The image receiving means 104 discards the image record and the power to save the image record in the storage means 105 based on the determination of the image selection means 106.

The image selection unit 106 receives the received image record from the image reception unit 104 and passes it to the feature point comparison unit 108. Further, the image selection means 106 gives priority to the received image data in accordance with a policy (image selection criterion) preset in the policy setting means 107 based on the comparison result of the feature point comparison means 108 described later. Give a degree. Further, the image selection means 106 selectively stores the received image data in the storage means 105 according to the assigned priority. In the present embodiment, the case where the policy setting means 107 is set so that a photograph having a composition different from the photograph (image data) stored in the storage means 105 is newly stored in the storage means 105 will be described. To do.

The image selection means 106 uses the feature point comparison means 108 to search the storage means 105 for a photo having the same composition as the received image record (about the composition comparison method by the feature point comparison means 108) Will be described later). If there is a photograph with the same composition as a result of the search, the image selecting means 106 notifies the image receiving means 104 to discard the received image record. At this time, if there is sufficient free space in the storage means 105, the fact that it can be deleted may be stored in the image record and deleted when the free space is low.

[0024] On the other hand, if the photo with the same composition does not exist, the image selecting means 106 notifies the image receiving means 104 to save the received image record. Whether or not to delete an image record when a photo having the same composition exists is set in advance by the user using the policy setting means 107.

The feature point comparison unit 108 receives from the image selection unit 106 a set of received image records and image records to be compared. The feature point comparison means 108 extracts and compares feature points from the image data of each image record using a feature point extraction algorithm to determine whether the composition is the same as the received image record, and the result is an image selection means. Inform 106.

It should be noted that the result of extracting the feature points is stored in the storage means 105 as meta information (image data management). Information) may be recorded together with the image record. In this case, it is not necessary to extract feature points again for the same image record, and the system speed can be increased. The meta information includes information such as feature points and IDs acquired from images.

The storage unit 105 stores the image record according to an instruction from the image receiving unit 104. Further, the image record is read and deleted according to the instruction of the image selection means 106.

[0028] The policy setting means 107 preferentially saves photos with different compositions, preferentially saves non-backlit photos, preferentially saves photos with different shooting times, and shows a laughing face if the composition is the same. When the selected photograph is preferentially stored, the selection policy of the received image is set for the image selection means 106 by the user's selection. Details of the method for comparing the composition, back light intensity, facial expression of the subject, etc. will be described later.

[0029] FIG. 2 shows an example of selectable policies. A plurality of these policies may be selected at the same time. In addition, as shown in FIG. 3, it may be possible to select one from each of!; Furthermore, a policy may be set by user input.

Next, the operation of the mobile terminal device of the present embodiment configured as described above will be described using a flowchart. FIG. 4 is a flowchart for explaining an operation procedure at the time of a received image storing process by the mobile terminal device according to the first embodiment of the present invention.

[0031] When the image receiving means 104 receives the image data by the communication means 101 (S101), the image receiving means 104 notifies the image selecting means 106 as an image record with an image ID unique to the terminal (S102).

[0032] The image selection means 106 that has received the notification, when the policy setting means 107 has been set to prioritize photographs with different compositions (S103), stores the received image records from the storage means 105. Read one by one and notify the feature point comparison means 108 together with the received image record.

[0033] The feature point comparison means 108 extracts and compares feature points using the feature point extraction algorithm from the received image record and the image data of the received image record. It is determined whether or not, and the result is notified to the image selection means 106 (S104 S105).

When a photo having the same composition is found, the image selection means 106 displays the image reception means 10. 4 is notified to discard the received image record (S107). On the other hand, if there is no photo having the same composition, the image selection means 106 notifies the storage means 105 to save the received image record (S106).

Upon receiving the notification, the image receiving unit 104 stores the received image record in the storage unit 105 based on the notification from the image selection unit 106.

[0036] As described above, according to the mobile terminal device of the first exemplary embodiment of the present invention, users who want to share an image upload the image to the server and download it to the other party. You can preferentially share photos with different compositions while concentrating on shooting events that do not require cumbersome tasks such as replacing memory cards, and at the same time save storage space.

[0037] (Second Embodiment)

FIG. 5 shows the configuration of the mobile terminal device according to the second embodiment of the present invention. The image selection means 106 to which the processing content is added and the newly added facial expression comparison means 109 will be described. Other configurations are the same as those described in the first embodiment, and thus description thereof is omitted.

The mobile terminal device according to the first embodiment of the present invention includes the feature point extraction unit 108 as an image comparison unit. However, in the mobile terminal device according to the second embodiment, the feature point comparison unit 1 In addition to 08, facial expression comparison means 109 is provided.

The expression comparison means 109 receives from the image selection means 106 a set of received image records and image records to be compared. The facial expression comparison means 109 performs facial expression recognition of the image data from the image data of each image record by using a face recognition algorithm and a facial expression recognition algorithm (for example, the eyes are not closed, the face is smiling, or the face is smooth). The image selection means 106 is notified of the result by determining which is the better facial expression.

[0040] It should be noted that what expression should be determined is based on the setting by policy setting means 107, but is determined in advance, for example, image data with a smile is given priority over image data with no smile. You may be made to follow the judged criteria.

[0041] Note that the result of facial expression recognition may be recorded in the storage means 105 together with the image record as meta information. In this case, facial expressions are recognized again for the same image record. This eliminates the need for the system and speeds up the system.

The image selecting means 106 receives the received image record from the image receiving means 104 and uses the feature point comparing means 108 based on the setting by the policy setting means 107 to receive the received image from the storage means 105. Search for photos with the same composition as the record.

If there is a photograph having the same composition as a result of the search, the image selection means 106 further uses the expression comparison means 109 to search for an image record having the most unfavorable expression. As a result of the search, when it is determined that the received image record is the most unfavorable facial expression, the image selection unit 106 notifies the image reception unit 104 to discard the received image record.

On the other hand, when the most unfavorable facial expression image is the received image record, the image selection unit 106 deletes the corresponding image record from the storage unit 105 and stores the received image record in the image reception unit 104. Notify me. Similarly, even when there is no photo having the same composition, the image selection unit 106 notifies the image reception unit 104 to save the received image record.

[0045] If there is sufficient free space in the storage means 105, it is stored as meta information in the image record that is most unfavorable at the present time, and the next time the image with the most unfavorable expression is retrieved. By comparing the received image record with priority, the number of comparisons may be omitted, and the speed may be increased.

Next, the operation of the mobile terminal device of the present embodiment configured as described above will be described using a flowchart. FIG. 6 is a flowchart for explaining an operation procedure at the time of a received image storing process by the mobile terminal device according to the second embodiment of the present invention.

[0047] When image data is received by the communication means 101 (S201), the image receiving means 104 gives an image ID unique to the terminal and notifies the image selection means 106 as an image record (S202).

Yes

[0048] The image selection means 106 that has received the notification sets the received image record from the storage means 105 when the policy setting means 107 has been set to give priority to the smiley face photo if the composition is the same (S203). One by one is read, and the feature point comparison means 108 is used to search for a photo having the same composition as the received image record (S204). [0049] If there is a photograph with the same composition, the facial expression comparison means 109 is further used to search for an image record having the most unfavorable facial expression (S205, S207). As a result of the search, if it is determined that the received image record is the most unfavorable facial expression, the image selection means 106 notifies the image reception means 104 to discard the received image record (S208, S210).

On the other hand, when the most unfavorable facial expression image is the received image record, the image selection unit 106 deletes the corresponding image record from the storage unit 105 and stores the received image record in the image reception unit 104. (S209, S206).

Similarly, even when there is no photo having the same composition, the image selection unit 106 notifies the image reception unit 104 to save the received image record (S206). Upon receiving the notification, the image receiving unit 104 stores the received image record in the storage unit 105 based on the notification from the image selection unit 106.

[0052] As described above, according to the mobile terminal device of the second exemplary embodiment of the present invention, users who want to share an image upload the image to the server and download it to the other party. You can preferentially share photos with different compositions and expressions while concentrating on shooting events that do not require cumbersome tasks such as changing memory cards, and at the same time save storage space.

[0053] (Third embodiment)

FIG. 7 shows the configuration of the mobile terminal device according to the third embodiment of the present invention. The image selection means 106 to which the processing content has been added and the imaging time comparison means 110 and the backlight intensity comparison means 111 that have been newly added will be described. Since other configurations are the same as those described in the first embodiment, description thereof is omitted.

[0054] The mobile terminal device according to the first embodiment of the present invention includes the feature point extraction unit 108 as an image comparison unit. However, in the mobile terminal device according to the third embodiment, as the image comparison unit. The photographing time comparing means 110 and the backlight level comparing means 111 are provided.

The photographing time comparison unit 110 receives from the image selection unit 106 a set of received image records and image records to be compared. The shooting time comparison means 110 receives and extracts the shooting time information from the meta information added to the image data of each image record. It is determined whether or not the photograph was taken at a time close to the image record, and the result is notified to the image selection means 106.

The backlight level comparison unit 111 receives the received image record and the set of image records to be compared from the image selection unit 106. The backlight level comparison unit 111 calculates the backlight level of the image data of each image record, determines which is the image with less backlight, and notifies the image selection unit 106 of the result.

It should be noted that the result of calculating the degree of backlight may be recorded in the storage unit 105 as meta information together with the image record. In this case, it is not necessary to calculate the backlight level again for the same image record, and the system speed can be increased.

The image selection means 106 receives the received image record from the image reception means 104 and receives it from the storage means 105 using the shooting time comparison means 110 based on the setting by the policy setting means 107. Search for photos taken at a time close to the image record

[0059] If there is a photograph taken at a close time as a result of the search, the image selection means 106 further uses the backlight level comparison means 111 to select the image record with the highest backlight level. Search for. As a result of the search, when it is determined that the received image record has the highest backlight level, the image selection unit 106 notifies the image reception unit 104 to discard the received image record.

[0060] On the other hand, when the image with the highest degree of backlight is the received image record, the image selection means 106 deletes the corresponding image record from the storage means 105, and stores the received image record in the image reception means 104. Notify you. Similarly, even when there is no photograph taken at a close time, the image selection unit 106 notifies the image reception unit 104 to save the received image record.

[0061] If the storage means 105 has sufficient free space, it is stored as meta information in an image record with the highest degree of backlighting at the present time, and the next time the image with the highest degree of backlighting is searched. In addition, the number of comparisons may be omitted to increase the speed by preferentially comparing the received image records.

Next, the flow of the operation of the mobile terminal device of the present embodiment configured as described above will be described. This will be described using one chart. FIG. 8 is a flowchart for explaining an operation procedure at the time of a received image saving process by the mobile terminal device according to the third embodiment of the present invention.

[0063] When the image receiving means 104 receives the image data by the communication means 101 (S301), the image receiving means 104 gives the image ID unique to the terminal and notifies the image selecting means 106 as an image record (S302).

Yes

[0064] The image selection means 106 that has received the notification sets the received image record when the policy setting means 107 is set to give priority to a photograph with little backlight if it was taken at a close time (S303). Are read one by one from the storage means 105, and the photograph taken at the time close to the received image record is searched using the photographing time comparison means 110 (S304).

[0065] When there is a photograph taken at a close time, the backlight level comparison means

111 is used to search for an image record having the highest degree of backlighting (S305, S307). As a result of the search, when it is determined that the received image record has the highest backlight level, the image receiving means 104 is notified to discard the received image record (S308, S310).

On the other hand, when the image with the highest degree of backlight is the received image record, the image selection unit 106 deletes the corresponding image record from the storage unit 105 and stores the received image record in the image reception unit 104. (S309, S306).

[0067] Similarly, the image selection means 106 notifies the image receiving means 104 to save the received image record even if the photograph taken at close time does not exist (S3). 06). Upon receiving the notification, the image receiving unit 104 stores the received image record in the storage unit 105 and the power to discard the received image record based on the notification from the image selecting unit 106.

[0068] As described above, according to the mobile terminal device of the third exemplary embodiment of the present invention, users who want to share an image upload the image to the server and download it to the other party. You can preferentially share photos with the lowest backlighting level among photos taken at close times while concentrating on shooting events that do not require cumbersome work such as replacing memory cards. Savings. [0069] (Fourth embodiment)

FIG. 9 shows the configuration of the mobile terminal device according to the fourth embodiment of the present invention. Detailed description of the same configuration as that of the first embodiment is omitted. The mobile terminal device 100 of the present embodiment includes an image receiving unit 104 that receives image data from another mobile terminal device, image data received from another mobile terminal device, image data stored in the storage unit 105, and And a function for assigning priority to received image data in accordance with a preset image selection criterion based on the comparison result of the image comparison means 120 and the image comparison means 120. In response to this, the image selection means 106 for selectively storing the received image data in the storage means 105, the policy setting means 107 for setting the image selection criteria by user selection, and the free space in the storage means 105 are detected. Capacity detecting means 121

The image selection unit 106 deletes the image data stored in the storage unit 105 according to the assigned priority. Further, the image selection means 106 selectively stores the received image data in the storage means 105 according to the free capacity detected by the capacity detection means 121, or the free capacity detected by the capacity detection means 121. In response, the image data stored in the storage means 105 is selectively deleted.

The image comparison unit 120 functions as a composition comparison unit, a facial expression comparison unit, a defocus degree comparison unit, a backlight level comparison unit, or a subject number comparison unit in accordance with the control of the image selection unit 106. A known technique can be used as the processing of each comparison means.

A case where the image comparison unit 120 is caused to function as a composition comparison unit will be described. The image comparison unit 120 divides the image data based on the edge information extracted based on the hue value and the luminance value, and compares the feature values based on the hue value and the luminance value for each divided region. . Further, the image comparison unit 120 extracts a feature amount from the key image, compares it with data in the feature amount table indicating edge information for all the search target images, and notifies the image selection unit 106 of an image having a high degree of similarity. To do.

[0073] Further, as a composition comparison method, a method for detecting feature points such as edges and corners and a method using a spatial distribution of colors are known (for example, http: 〃 www.brl.ntt.co .jp / p eople / akisato / pdf / prmu20050o.pdf http: //vokoya.naist.ip/ posters / 199 8 / pdfs / hideno -y. See pdf).

FIG. 10 is an explanatory diagram in the case where the contour is extracted from the image and the number of subjects is extracted when the image comparison means 120 is made to function as the subject number comparison means. The image comparison means 120 calculates the number of subjects by extracting the contour (FIG. 10 (b)) from the target image shown in FIG. 10 (a) and specifying the shape of the head relative to the shoulder and neck.

FIG. 11 is an explanatory diagram in a case where the image comparison unit 120 functions as a facial expression comparison unit. The image comparison means 120 cuts out a face region (FIG. 11 (b)) from the target image shown in FIG. 11 (a), and estimates the facial expression of the person from the position information of eyes, nose and mouth. In this case, facial expressions are assumed by detecting the degree of opening and bending of the contours of the parts that make up the face. For example, the strength of each facial expression is obtained based on a membership function with the feature value obtained by normalizing the open state between the contours of the eyes, nose and mouth and the curved state of each contour as a parameter. The facial expression of the target image is estimated by obtaining the facial expression.

[0076] As facial expression recognition methods, facial recognition methods using higher-order local autocorrelation (HLAC) methods and Fisherfaces / Fisherfaces methods are also known! /, Ru (for example, http: // www. isi. see .pdf).

[0077] In addition, software that can search and determine camera shake 'out-of-focus photos' has been commercialized as an out-of-focus discrimination method (for example, Media Drive Co., Ltd. “Easy Mobile Phone Digi Power Mefiling”, http: / /pac.mediadrive.jp/topics/20041104—see ydf.html).

[0078] In addition, as a method for comparing the direction, position, focal length, and illuminance used to determine the degree of backlight, there is a method using meta information. When shooting, information such as direction can be compared by recording it as meta information in association with image data.

[0079] In addition, a person extraction method can be used as a method for comparing the number of persons photographed in a photo and discriminating a group photo and a background photo. As a person extraction method, the use of color information has been dissatisfied. (Ί: http://www.nlab.sogol.ynu.ac.jp/ynu/r1 sa mples / no 1 4.html , JP 2005-222304 Koyuki “No-turn device” (Technology for learning skin color and hair color and improving the extraction accuracy of the skin area with a neural network using cupropropagation)).

FIG. 12 shows an outline of the storage area of the storage means 105. As shown in FIG. 12 (a), the storage means 105 includes a first storage area 122 for storing image data captured by its own device, and a second storage for storing image data received from other portable terminal devices. It is divided into area 123.

FIG. 12 (b) shows a case where image data is stored in the storage area 124 together with the identification information of the photographed terminal device. The storage unit 105 stores the image data captured by the image capturing unit 103 together with identification information (local device) indicating that the image is captured by the local terminal device, and adds the received image data to the received image data. It is stored together with identification information (other device X, other device Y) indicating the force that is an image taken by any terminal device.

[0082] According to the mobile terminal device 100 of the present embodiment, the image that the user took is secured (not deleted), and is taken by another person, and the photograph desired by the user (not owned by the user). With the power S, you can easily collect as many photos with good composition and quality as possible according to the available capacity.

[0083] In this case, as shown in Fig. 1 2 (a), a method of physically separating the storage areas may be used as a method of distinguishing between the image taken by oneself and the image taken by another person. As shown in FIG. 12 (b), the image data may have an “attribute for identifying which camera the image was taken (own device, other device X, etc.)”. In the latter case, it is necessary to divide the area V, so the storage area can be used more effectively.

In addition, the mobile terminal device 100 of the present embodiment has capacity detection means 121 for detecting the free capacity of the storage means 105, and leaves high priority images according to the free capacity of the storage means 105. , Delete low priority images. The priority is given when the image receiving unit 104 receives an image.

[0085] (Fifth embodiment)

Next, the case where the mobile terminal device 100 shown in FIG. 9 functions as the image data transmission side will be described. Hereinafter, functions required when the mobile terminal device 100 functions as a transmission side will be described. Here, broadcast communication is performed between three or more mobile terminal devices. An example is shown.

The image comparison unit 120 compares the image data newly captured by the imaging unit 103 with the image data stored in the storage unit 105. The image selection unit 106 has a function of giving priority to image data newly captured by the imaging unit 103 based on the comparison result of the image comparison unit 120 according to a preset image selection criterion. The image data to be sent is selected according to the priority. The image transmission unit 102 transmits image data to another mobile terminal device via the communication unit 101 based on the selection result of the image selection unit 106. Further, the image transmitting means 102 transmits the image data to be transmitted with the identification ID of its own device.

[0087] As described above, according to the mobile terminal device of the fifth embodiment of the present invention, if image selection criteria are set in advance, image data captured by the own device according to priority. Since image data that would be desired by other portable terminal devices can be selected and transmitted, image data can be easily shared while suppressing the amount of transmission data. For example, a new photograph taken by the own device is a preferable photograph (less out of focus, composition is different, etc.) compared to a photograph previously taken by the own device or a photo received from another mobile terminal device. Since it can be transmitted only in such a case, it is possible to easily share preferable image data while suppressing the amount of transmission data.

Note that the image comparison unit 120 may compare image data with reference to a device ID (identification information indicating a device that has captured the image data) given to the image data. For example, a comparison result that a new photograph taken by the image comparison unit 120 has a lower priority than a photograph taken by the own apparatus, but a higher priority than a photograph taken by another apparatus. When is issued, the image selection means 106 can select this photo as a transmission target. In addition, as described above, it is possible to select and transmit image data that is more preferable for other portable terminal devices, thereby further improving user convenience.

[0089] Peer-to-peer communication may be performed between three or more portable terminal devices. In this case, the amount of transmission data can be suppressed by determining which image data is transmitted to the other party using the identification ID assigned to each image data. An example of determination using identification ID is shown below. [0090] Suppose that between camera A and camera B, camera A is the receiving side, camera B is the transmitting side, and camera A receives image b. Next, conversely, if camera B becomes the receiving side and camera A becomes the transmitting side, camera A will not send image b! /.

[0091] In addition, camera A sends image a taken with its own terminal to camera B, and camera B sends received image a and image b taken with its own terminal to camera C, where camera C power S Consider the case where the image a and the image b received from the camera B are stored in addition to the image c taken by the own terminal. Camera C can collect the picture (image a) taken by camera A by receiving it from camera B, so there is no need to receive it from camera A. Next, camera C (having image a, image b, and image c) determines that the image to be transmitted to camera A is image b and image c using the identification ID assigned to the image. Send to. Camera A can collect the picture (image b) taken by camera B by receiving it from camera c, eliminating the need to receive it from camera B.

[0092] According to the mobile terminal device 100 of the first to fourth embodiments, an image captured by the own device is secured while the image taken by another person is taken, and a desired photograph (for example, the user owns the image). It is possible to easily collect as many photos as possible with no image composition and good image quality on the spot according to the available capacity. In addition, when taking a group photo, you can send photos taken with one camera to each camera (terminal), eliminating the need to take photos with your own camera. Further, as described in the fifth embodiment, since the transmitting-side portable terminal device has a function of assigning priority to image data, it is possible to more easily transfer images between terminal devices while suppressing the amount of transmission data. Share data.

[0093] Note that in the mobile terminal device 100, the image pickup means 103 may collect only photographs taken by others that are not essential. Further, the policy in the policy setting unit 107 may be dynamically changed according to the free capacity of the storage unit 105.

[0094] In other words, if a policy is set for the image data that the user wants to collect, it can be automatically selected and prioritized according to the policy and selectively received or deleted. In such events, many of the photos taken by other participants can be acquired on-the-fly as much as the digital camera's capacity allows for image data that they want later.

In the first to fourth embodiments, the image selecting unit 106 is the image receiving unit 104. In the example described above, the priority is given to the received image data. However, the image selection unit 106 uses the image data received by the image reception unit 104 and all or part of the image data stored in the storage unit 105 in advance. Priorities may be given to objects in accordance with the comparison results of image comparison means (such as feature point comparison means 108 and facial expression comparison means 109) and preset policies (image selection criteria). By giving priority to the image data stored in the storage means 105, it is possible to delete from the image data with low priority when the free space is low. Therefore, more images desired by the user can be collected.

Further, in each of the above-described embodiments, the example in which the image comparison unit compares the composition of the photograph has been described. However, the meta information given to the image data may be compared. As meta information of image data, attribute information given at the time of shooting or after shooting, such as shooting time (see Fig. 2), focal length when shooting the subject, camera position force and subject distance to the subject, etc. Can be used. Further, information indicating the contents of photographing (name of subject, photographing location, event name, etc.), a photographer's comment, etc. may be used as meta information. By using such meta information, the degree of freedom of policy setting can be improved, and the user can more easily collect desired image data.

[0097] (Sixth embodiment)

Next, a mobile terminal device 100 according to a sixth embodiment will be described. In the mobile terminal device 100 of the present embodiment, the processing content in the image selection means 106 is added in order to select received photo records prior to comparison between photo records. The configuration of the mobile terminal device 100 of this embodiment is the same as that of the first embodiment shown in FIG.

In the mobile terminal device 100 of the present embodiment, the image selection unit 106 is a policy selection unit.

Depending on the conditions of 107, the received photo records are saved by skipping the comparison between the photo records, or the received photo records are discarded prior to the comparison between the photo records.

[0099] For example, in the image selection means 106, prior to comparison between image records, the photo group ID stored as meta information of the received photo records is the same as the photo group ID set by the policy selection means 107. Or received image record if different Discard or save.

[0100] Here, the photograph group ID is the photographer's identification information, participating event identification information, location identification information, group identification information to which the sender or receiver belongs, and a beacon installed at the venue or entrance of the venue. Signal information transmitted from the terminal, identification information acquired from a two-dimensional code such as a QR code (registered trademark), feature point information generated from a photograph taken once, and the like.

[0101] As described above, according to the mobile terminal device 100 of the present embodiment, since the received photo records are selected prior to the comparison between the photo records, it is possible to limit the transmission destinations or to select the photo records to be stored in advance. The type can be limited.

[0102] Also, in the mobile terminal device 100 of the present embodiment, the image selection means 106 has a case where the photo record to be compared is not stored in the receiving terminal, or a space for storing the received photo record is the receiving side. If it remains in the terminal storage, the comparison between the received photo record and the stored photo record is skipped, and the image is saved unconditionally or under the conditions of the policy setting means 107.

[0103] For example, when an image record is received, the comparison is skipped and saved as long as there is enough storage. Smile level when an image record is received with the condition "

If over 80%, skip comparison and save.

As described above, according to the mobile terminal device 100 of the present embodiment, the comparison between the received photo record and the stored photo record is skipped, and the image is stored unconditionally or according to the conditions of the policy setting means 107. Therefore, you can limit the destinations and the types of photo records that you want to save in advance.

[0105] In addition, when the mobile terminal device 100 according to the present embodiment is configured so that the received photo record can be retransmitted to another terminal, the copy number limit information recorded as the meta information of the image record is displayed as the image record. When the number of copies reaches the specified value when resending the image record to another terminal, the resending is stopped.

[0106] According to this, the transmission destination can be limited within the range of the copy number limit, and since the re-transmission cannot be performed beyond the copy number limit, the copyright of the photo record can be protected. [0107] The mobile terminal device 100 of the present embodiment is also applicable to a sender side terminal or a receiver side terminal that does not have an imaging unit. For example, it may be a receiver side terminal that does not have an imaging unit and performs only reception.

[0108] Similarly, a sender-side terminal that does not have an imaging unit and transmits a photo record obtained by means other than imaging (a photo record stored in advance in a storage or a photo record obtained using a network). It may be.

[0109] In this case, as a method for identifying the photographer, information that can identify the photographer, such as the photographer's signature and the URL of the Web page, is transmitted as the metadata of the photo record in the image to be transmitted. Techniques can be used.

[0110] According to this, the photographer can advertise his / her skill in photographing, guide the recipient of the photograph record to the company's web page, and use the photographer's identification information. Can be used to select photos.

Next, a pattern for generating meta information on the sender side will be described. Meta information such as feature points and smiles can be generated on the sending side and sent to the receiving side at the same time as sending the photo record or prior to sending the photo record.

[0112] When sending meta information prior to sending a photo record, the recipient compares the photo record stored in the image comparison means with the meta information of the received photo record.

If it is determined that the sender's photo record should be saved from the stored photo record, the sender is requested to send the photo record.

[0113] According to this, when meta information is transmitted simultaneously with transmission of a photo record, it is not necessary to calculate meta information for each recipient. In addition, if meta information is sent prior to sending a photo record, the amount of communication can be reduced.

[0114] (Seventh embodiment)

FIG. 13 is a diagram for explaining the operation of the mobile terminal device 100 according to the seventh embodiment of the present invention. The configuration of the mobile terminal device 100 is the same as that of the first embodiment shown in FIG. The mobile terminal device 100 according to the present embodiment acquires an event ID from a two-dimensional code such as a QR code captured by the imaging unit 103, and assigns the event ID to the image data.

The image data can be easily shared with other portable terminal devices. [0115] For example, a QR code is prepared at an event venue such as a wedding hall or a concert hall. Then, as shown in FIG. 13 (a), each event participant takes a QR code with the mobile terminal device 100 and acquires an event ID. The QR code image may be discarded after the event ID is extracted from the QR code.

[0116] As shown in Fig. 13 (b), the mobile terminal device 100 on the transmission side adds the event ID to the captured image data and transmits it. On the other hand, as shown in FIG. 13 (c), the mobile terminal device 100 on the receiving side, for example, can set a policy of “collecting image data with a specific ID” and set a desired Only image data with event IDs can be collected (see Fig. 13 (d)).

[0117] The image data may be encrypted using the event ID obtained from the QR code as a key. According to this, only recipients with the same QR code (event ID) can decrypt, so the destination can be limited.

[0118] Further, the network itself may be encrypted only by a person having the same QR code. In other words, the event ID obtained from the QR code is used as a key of a wireless LAN SSID (Service Set Identifier), WEP (Wire Equivalent Privacy), WPA (W-Fi Protected Access), or the like. According to this, it is possible to limit transmission destinations that are not encrypted each time image data is transmitted.

[0119] In each of the above-described embodiments, an example has been described in which the mobile terminal device 100 transmits a still image such as a photograph and shares the still image based on meta information or event ID given to the still image. It can also be applied when sharing moving images as well as still images. Although it takes a very long time to make a selection decision after playing a moving image, according to the present embodiment, it is possible to quickly select a necessary moving image according to a policy set by the user.

[0120] Note that each functional block such as the image transmission unit 102, the image reception unit 104, the image selection unit 106, and the like is typically realized as an LSI that is an integrated circuit. These may be individually made into one chip, or may be made into one chip so as to include a part or all of them. Here, it is called IC, system LSI, super LSI, or ultra LSI due to the difference in power integration as LSI.

[0121] Further, the method of circuit integration is not limited to LSI, but a dedicated circuit or general-purpose processor It may be realized with. You can use a field programmable gate array (FPGA) that can be programmed after manufacturing the LSI, or a reconfigurable processor that can reconfigure the connection and settings of the circuit cells inside the LSI.

[0122] Furthermore, if integrated circuit technology that replaces LSI emerges as a result of advances in semiconductor technology or other derived technology, it is naturally also possible to integrate functional blocks using this technology. There is a possibility of adaptation of nanotechnology.

[0123] As described above, the mobile terminal device of the present invention stores image data received from other mobile terminal devices, image data received from other mobile terminal devices, and storage means. Based on the comparison result of the image comparing means and the image comparing means, the received image data is stored in the storage means in accordance with a preset image selection criterion. Image selection means for storing.

[0124] With this configuration, if image selection criteria are set in advance, the received image data can be stored according to the force priority set as the image selection criteria, so that the memory capacity can be used effectively. Therefore, it is possible to easily collect desired image data without performing complicated operations. For example, by automatically receiving photos taken by others, determining the photos that are preferred by the user, and preferentially saving them to a storage medium, even if the event is in progress, The user can easily collect desired photos on the spot while concentrating on events that do not require complicated operations. In addition, you can collect the photos you want while effectively using the memory capacity.

[0125] Also, in the mobile terminal device of the present invention, the image selection means is stored in the storage means according to a preset image selection criterion based on the comparison result of the image comparison means! / The image data is deleted.

With this configuration, the storage area can be saved by deleting the image data stored in the storage medium according to the priority according to the image selection criteria.

[0127] Further, in the mobile terminal device of the present invention, the image selection means has a function of assigning priority, and selectively stores the received image data according to the assigned priority. The image data stored in the storage means, the image data stored in the storage means can be deleted, and the image data to be transmitted can be selected. [0128] Further, the mobile terminal device of the present invention includes policy setting means for setting the image selection criterion.

[0129] With this configuration, the user can freely set image selection criteria by input or selection.

[0130] Further, the mobile terminal device of the present invention includes capacity detection means for detecting the free capacity of the storage means, and the image selection means receives the received data according to the free capacity detected by the capacity detection means. Image data is stored in the storage means.

With this configuration, it is possible to collect as much desired image data as possible in consideration of the balance between the priority according to the image selection criterion and the free capacity of the storage unit.

[0132] Further, the mobile terminal device of the present invention includes capacity detection means for detecting a free capacity of the image storage means, and the image selection means performs the storage according to the free capacity detected by the capacity detection means. The image data stored in the means is deleted.

[0133] With this configuration, considering the balance between the priority according to the image selection criteria and the free space of the storage means, for example, when the free space is reduced, the image data with low priority is deleted and freed up. Since the capacity can be increased, it is possible to collect more high-priority image data with the power S.

[0134] Further, the mobile terminal device of the present invention includes an imaging unit, and the storage unit stores a first storage area for storing image data captured by the device itself and an image received from another mobile terminal device. It is divided into a second storage area for storing image data!

[0135] With this configuration, while securing (not deleting) images taken by yourself, images taken by others that are preferable to images taken by yourself, such as a composition that you do not have, are better. It is possible to collect as many photos and photos as possible.

[0136] In addition, the mobile terminal device of the present invention includes an imaging unit, and the storage unit is identification information indicating that the image data captured by the imaging unit is an image captured by the own terminal device. And the received image data is stored together with identification information indicating! /, Which is an image taken by a terminal device with a deviation, attached to the received image data.

[0137] Further, in the mobile terminal device of the present invention, the image comparison means adds the received image data. Additional information comparing means for comparing the additional information with the additional information of the image data stored in the storage means is provided.

[0138] With this configuration, for example, by adding attribute information of image data and information indicating the content of image data to the image data as meta information that is an example of additional information, the degree of freedom in setting the image selection standard is increased. The user can collect the desired image data more easily.

[0139] Also, the portable terminal device of the present invention skips comparison of image data by the image comparison means when the free space satisfies a predetermined condition.

[0140] With this configuration, by skipping the comparison of image data, it is possible to limit the destination, or to limit the types of photo records that you want to save.

[0141] In addition, in the mobile terminal device of the present invention, the policy setting means can set a policy for skipping comparison of image data by the image comparison means, and the image selection means can be set according to the policy. The image data received from the other portable terminal device is saved or discarded.

[0142] According to this configuration, it is possible to set a policy for selecting received image data prior to comparison between image data, so that it is possible to limit the transmission destination and the type of image data to be stored in advance.

[0143] Also, in the mobile terminal device of the present invention, the policy setting means can set a predetermined group ID as the image selection criterion, and the image selection means receives from the other mobile terminal device Depending on whether or not the group ID assigned to the image data is the same as the group ID set in the policy setting means, the image data received from the other portable terminal device is saved or discarded.

[0144] According to this configuration, the received image data is saved or discarded depending on whether or not the group ID assigned to the received image data is the same as the group ID set in the policy setting means. Therefore, it is easy to collect the desired image data without performing complicated operations.

[0145] In addition, in the mobile terminal device of the present invention, the group ID includes photographer identification information, event identification information, location identification information, and group identification information to which a sender or receiver belongs. Information, signal information transmitted from a beacon installed at the venue, identification information obtained from a two-dimensional code, and feature point information generated from a photograph taken.

[0146] According to this configuration, the image data received from another mobile terminal device can be automatically saved in the storage medium in accordance with the group ID. You can easily collect the desired image data on the spot while concentrating on events that do not require complicated operations.

[0147] In addition, the mobile terminal device of the present invention includes capacity detection means for detecting the free capacity of the storage means, and the image selection means is configured to detect the free capacity from the other mobile terminal device in response to the detection of the free capacity. Save the received image data.

[0148] According to this configuration, the received image data can be stored unconditionally as long as the storage means has room, so that the memory capacity can be effectively utilized. In addition, the user can easily collect desired image data while effectively utilizing the memory capacity without performing complicated operations.

[0149] Further, in the mobile terminal device of the present invention, the policy setting means can set an event ID as the image selection criterion, and the image selection means can receive an image received from the other mobile terminal device. Depending on whether the event ID assigned to the data is the same as the event ID set in the policy setting means, the image data received from the other mobile terminal device is saved or discarded.

[0150] According to this configuration, the received image data is saved or discarded depending on whether or not the event ID assigned to the received image data is the same as the event ID set in the policy setting unit. Therefore, it is possible to easily collect desired image data without performing complicated operations.

[0151] Further, the mobile terminal device of the present invention has imaging means for capturing an event ID by capturing a two-dimensional code, and the policy setting means uses the event ID acquired by the imaging means as the image. Set as selection criteria.

[0152] According to this configuration, it is possible to set an image selection criterion based on an event ID, and selectively store or discard image data according to the image selection criterion.

[0153] The mobile terminal device of the present invention is a mobile terminal device that transmits image data, Based on the comparison result of the imaging means, the image comparison means for comparing the newly captured image data with the image data stored in the storage means, and the comparison result of the image comparison means, Image selection means for selecting image data to be transmitted, and image transmission means for transmitting image data to another portable terminal device based on a selection result of the image selection means.

[0154] With this configuration, if an image selection criterion is set in advance, among the image data captured by the own device in accordance with the image selection criterion, an image that may be desired by another mobile terminal device Since data can be selected and transmitted, image data can be easily shared while suppressing the amount of data to be transmitted. For example, when a new photo taken with your device is a better photo (less out of focus, composition is different, etc.) compared to a photo previously taken with your device or a photo received from another mobile terminal device Therefore, it is possible to easily share preferred image data while suppressing the amount of transmission data.

[0155] In addition, in the mobile terminal device of the present invention, the imaging unit acquires the image data, and also captures an event ID by capturing a two-dimensional code, and the image transmission unit adds the image data to the image data. The event ID is given and transmitted.

[0156] According to this configuration, since the event ID is assigned to the image data for transmission, the image data can be received only by the mobile terminal device having the same event ID, and the captured image data can be transmitted with peace of mind. That's the power S.

[0157] In addition, in the mobile terminal device of the present invention, the image data is image data of a photograph taken by a camera, and the image comparison unit includes a composition of the photograph, a facial expression of the subject, and a defocus of the photograph. Compare at least! /, The degree, the degree of backlighting of the photos, or the number of people in each photo.

[0158] According to this configuration, any of the following can be realized. In other words, photos with the same composition can be preferentially collected, and conversely, photos with different compositions can be preferentially collected. In addition, it is possible to preferentially collect only photographs with more preferable facial expressions (such as eyes that are not closed, a smile, or a smile), or preferentially collect photographs with unusual facial expressions. In addition, it will be possible to preferentially collect only images with little blur! Also, only images with low backlighting and images are excellent. It can be collected first. In addition, it is possible to preferentially collect only group photos with a large number of subjects and background photos that do not contain people.

[0159] Further, the image selection method of the present invention is an image selection method in a mobile terminal device, the step of receiving image data from another mobile terminal device, the image data received from another mobile terminal device, and Comparing the received image data according to a preset image selection criterion based on a comparison result of the image comparing means and a comparison result of the image comparing means stored in the storage means! Storing in the means.

[0160] With this configuration, if image selection criteria are set in advance, the received image data can be stored according to the image selection criteria based on the comparison result of the image comparison means. In addition to making effective use of memory capacity, desired image data can be easily collected without complicated operations. For example, by automatically receiving photos taken by others, determining the photos that are preferred for the user, and preferentially saving them to a storage medium, the user will be able to use the event even when the event is in progress. It is possible to easily collect desired photos on the spot while concentrating on events without performing complicated operations. In addition, a desired photograph can be collected while effectively utilizing the memory capacity.

[0161] Further, the image selection method of the present invention is an image selection method in a mobile terminal device, the step of receiving first image data, the first image data, and the received second image. Comparing the data and determining whether the composition is the same; if the first and second image data have the same composition, discard the first image; if not, the first composition Storing image data.

[0162] With this configuration, users who want to share images can upload images to the server, download them to the other party, and take pictures of events and other troublesome tasks such as exchanging memory cards. While concentrating, you can preferentially share photos with different compositions and save storage space.

[0163] Also, in the image selection method of the present invention, when the first and second image data have the same composition, the facial expressions of the first and second images are extracted, and the extracted facial expressions are predetermined. A step of determining whether or not the policy corresponds to a policy, and if the facial expression of the first image corresponds to a predetermined policy, the first image data is discarded, and the facial expression of the second image corresponds to the predetermined policy A step of discarding the second image data and storing the first image data.

[0164] With this configuration, users who want to share images can upload images to the server and download them to the other party, or take pictures of events and other troublesome tasks such as exchanging memory cards. While concentrating, you can preferentially share photos with different compositions and expressions, and at the same time save storage space.

[0165] Further, the present invention is an image selection method in a mobile terminal device, the step of receiving first image data, and the first image data from the received image data at a time close to the first image data. A step of retrieving the captured second image data; and when the second image data is present, the backlight levels of the first image data are compared by comparing the backlight levels of the first and second image data. When the degree is high, the first image data is discarded, and when the degree of backlighting of the second image data is high! /, The second image data is discarded, and the first image data is discarded. An image selection method, and a step of storing the first image data if the second image data does not exist.

[0166] With this configuration, users who want to share an image can upload images to the server and download them to the other party, or take pictures of events and other troublesome tasks such as exchanging memory cards. You can preferentially share photos with low backlighting from photos taken in close proximity while concentrating, and at the same time save storage space.

[0167] Further, the image selection method of the present invention includes a step of selectively storing or deleting the first image data in accordance with a free space in an area for storing the image data.

[0168] With this configuration, it is possible to collect as much desired image data as possible in consideration of the free space.

[0169] Further, the mobile terminal device of the present invention is a mobile terminal device that transmits image data, and compares the imaging means, the newly captured image data, and the image data stored in the storage means. Based on a comparison result between the image comparison unit and the image comparison unit, a priority is given to the newly captured image data in accordance with a preset image selection criterion. An image selection unit that selects image data to be transmitted according to the assigned priority, and transmits the image data to another mobile terminal device based on a selection result of the image selection unit. Image transmission means.

[0170] With this configuration, if the image selection criterion is set in advance, the image data captured by the own device may be desired by another mobile terminal device according to the priority according to the image selection criterion. Since it is possible to select and transmit image data, it is possible to easily share image data while suppressing the amount of transmission data. For example, a new photo taken by the device is a preferable photo (less out of focus, composition is different, etc.) compared to a photo previously taken by the device or a photo received from another mobile terminal device. Only in this case, the transmission power S can be reduced. Therefore, it is possible to easily share preferable image data while suppressing the amount of transmission data.

[0171] Although the invention has been described in detail and with reference to specific embodiments, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. It is.

This application is based on a Japanese patent application filed on December 15, 2006 (Japanese Patent Application No. 2006-337998), the contents of which are incorporated herein by reference.

Industrial applicability

[0172] According to the present invention, if image selection criteria are set in advance, the received image data can be selectively stored according to the priority, so that the memory capacity can be effectively utilized. Therefore, it has an effect of easily collecting desired image data without performing complicated operations, and is useful for a portable terminal device having a communication function, an image selection method, and the like.

Claims

The scope of the claims

[1] Image receiving means for receiving image data from another mobile terminal device;

Image comparison means for comparing image data received from another portable terminal device with image data stored in the storage means;

A portable terminal device comprising: an image selection unit that stores the received image data in the storage unit according to a preset image selection criterion based on a comparison result of the image comparison unit.

[2] The mobile terminal device according to claim 1,

The portable terminal device, wherein the image selection unit deletes image data stored in the storage unit in accordance with a preset image selection criterion based on a comparison result of the image comparison unit.

[3] The mobile terminal device according to claim 1,

A portable terminal device comprising policy setting means for setting the image selection criteria.

[4] The mobile terminal device according to claim 1,

Capacity detecting means for detecting the free capacity of the storage means,

The portable terminal device in which the image selection means stores the received image data in the storage means according to the free space detected by the capacity detection means.

[5] The mobile terminal device according to claim 2,

Capacity detecting means for detecting the free capacity of the image storage means,

The mobile terminal device, wherein the image selection means deletes image data stored in the storage means according to the free space detected by the capacity detection means.

[6] The mobile terminal device according to claim 1,

Comprising imaging means,

The storage means is divided into a first storage area for storing image data captured by the own apparatus and a second storage area for storing image data received from another mobile terminal apparatus. .

[7] The mobile terminal device according to claim 1,

Comprising imaging means, The storage means stores the image data captured by the imaging means together with identification information indicating that the image is captured by the terminal device, and the received image data is added to the received image data. ! /, Ru, v, portable terminal device that stores together with identification information indicating whether the image was taken by a misplaced terminal device.

[8] The mobile terminal device according to claim 1,

The mobile terminal device, wherein the image comparison means includes additional information comparison means for comparing the additional information of the received image data with the additional information of the image data stored in the storage means.

[9] The mobile terminal device according to claim 4,

A portable terminal device that skips comparison of image data by the image comparison means when the free space satisfies a predetermined condition.

[10] The mobile terminal device according to claim 5,

[11] The mobile terminal device according to claim 8,

A portable terminal device that skips comparison of image data by the image comparison means when additional information of received image data satisfies a predetermined condition.

[12] The mobile terminal device according to claim 3,

The policy setting means can set a policy for skipping comparison of image data by the image comparison means,

The mobile terminal device that saves or discards image data received from the other mobile terminal device according to the policy.

[13] The mobile terminal device according to claim 12,

The policy setting means can set a predetermined group ID as the image selection criterion,

The image selection means determines whether the group ID assigned to the image data received from the other portable terminal device is the same as the group ID set in the policy setting means. Save or discard image data received from the device Mobile terminal device.

[14] The mobile terminal device according to claim 13,

The group ID is obtained from photographer identification information, event identification information, location identification information, group identification information to which the sender or receiver belongs, signal information transmitted from a beacon installed at the venue, and a two-dimensional code. A mobile terminal device including identification information and feature point information generated from a photograph taken.

[15] The mobile terminal device according to claim 12,

Capacity detecting means for detecting the free capacity of the storage means,

The mobile terminal device that stores the image data received from the other mobile terminal device in response to the detection of the free space.

[16] The mobile terminal device according to claim 13,

The policy setting means can set an event ID as the image selection criterion, and the image selection means sets an event ID given to image data received from the other portable terminal device in the policy setting means. Depending on whether or not the received event ID is the same as the received event ID, the mobile terminal device that stores or discards the received image data.

[17] The mobile terminal device according to claim 16,

It has an imaging means to capture the event ID by shooting the two-dimensional code,

The policy setting means is a portable terminal device that sets the event ID acquired by the imaging means as the image selection criterion.

[18] A mobile terminal device for transmitting image data,

Imaging means;

Image comparison means for comparing newly captured image data and image data stored in the storage means;

Based on the comparison result of the image comparison means! /, Image selection means for selecting image data to be transmitted in accordance with preset image selection criteria;

An image transmitting means for transmitting image data to another portable terminal device based on a selection result of the image selecting means; A mobile terminal device comprising:

The mobile terminal device according to claim 18, wherein

The imaging means acquires the image data, captures a two-dimensional code, acquires an event ID,

The image transmitting means is a portable terminal device that transmits the image data with the event ID assigned thereto.

The mobile terminal device according to claim 1, wherein

The image data is image data of a photograph taken with a camera,

The mobile terminal device that compares at least one of a composition of a photograph, a facial expression of a subject, a degree of defocusing of a photograph, a degree of backlighting of a photograph, or the number of persons photographed in each photograph.

An image selection method in a mobile terminal device,

Receiving image data from another mobile terminal device;

Comparing image data received from another portable terminal device with image data stored in the storage means;

Based on the comparison result of the image comparison means! /, And storing the received image data in the storage means according to a preset image selection criterion;

An image selection method comprising:

An image selection method in a mobile terminal device,

Receiving first image data; and

The first image data is compared with the received second image data. If the first and second image data have the same composition, the first image is discarded. An image selection method comprising: storing the first image data in a case where the composition is not in the same composition.

The image selection method according to claim 22, wherein

When the first and second image data have the same composition, the first and second image tables are displayed. When the expression of the first image corresponds to a predetermined policy, the first image data is discarded, and when the expression of the second image corresponds to a predetermined policy, the second image Discarding data and storing the first image data.

[24] An image selection method in a mobile terminal device,

Receiving first image data; and

Retrieving second image data taken at a time close to the first image data from received image data;

When the second image data exists, the backlight levels of the first and second image data are compared. When the backlight level of the first image data is high, the first image data is discarded. And, when the second image data has a high degree of backlighting, discarding the second image data and storing the first image data;

And a step of storing the first image data when the second image data does not exist.

[25] The image selection method according to any one of claims 21 to 24,

An image selection method comprising a step of selectively storing or deleting the first image data in accordance with a free space in an area for storing the image data.