JP5152774B2 - Display device in elevator car and display method in elevator car - Google Patents

Description

  The present invention relates to a display device in an elevator car and a display method in an elevator car, and more particularly to a crime prevention function in the elevator car.

  When one or more strange men ride at the same time when a woman or child rides alone in an elevator, even if the woman or child feels uneasy, there are cases where the crime prevention operation cannot be performed withholding others. In order to solve the above-mentioned problem, if the video for crime prevention is always displayed on the monitor in the elevator car, the efficiency of providing other general information is lowered.

  As a technique for solving such a problem, the technique of Patent Document 1 can be used. In the technique described in Patent Document 1, an elevator car image, which is taken by a surveillance camera, an image obtained by receiving a text broadcast, a pre-recorded message image, and the like are switched at regular intervals. Is displayed on the monitor. That is, a crime prevention operation is performed by displaying images in the elevator car at regular intervals, and images that provide general information are displayed at times other than when the images are displayed.

  Further, as a technique related to the present invention, Non-Patent Documents 1 and 2 are disclosed as techniques for determining the age and sex of a person by image analysis.

JP 11-349242 A Miyoko Nakano, “Automated Intelligent Feature Extraction and Estimation for Age, Gender, and Race Estimation”, [online], 2005, Telecommunications Advancement Foundation, [March 1, 2006 search], Internet <URL : http: //www.taf.or.jp/publication/kjosei_20/pdf/p504.pdf> Hiroyuki Yamase, “Gender Discrimination Using Colored Whole Body Images”, [online], February 16, 1996, Nara Institute of Science and Technology Graduate School, [March 1, 2006 search], Internet <URL: http: / /chihara.aist-nara.ac.jp/public/research/thesis/master/96/yamase9451118.pdf>

  However, in the technique described in Patent Document 1, since a video for crime prevention and a video for providing general information are alternately displayed at regular intervals, for example, even when only one person occupies the elevator car, Video is displayed on the monitor, and there is a problem that the efficiency of providing information is not sufficient.

  Accordingly, an object of the present invention is to provide a display device in an elevator car that automatically provides crime prevention information and realizes efficient information provision.

A display device in an elevator car according to claim 1 according to the present invention comprises a monitoring camera that captures an image in the car in the elevator car, a display unit installed in the elevator car, and an analysis of the image in the car. Te, a video analysis unit to determine the appearance of the passenger of the elevator the car, and a video display unit to display different display content based on the determination result on the display unit, the video analysis unit, the boarding The number of persons for each gender is determined from the appearance of the person .

The display device in the elevator car according to claim 2 according to the present invention is the display device in the elevator car according to claim 1 , wherein the video display unit is configured so that only the male is in the elevator car. When it is determined that the vehicle is riding, the display content other than the security video is displayed on the display unit .

A display device in an elevator car according to a third aspect of the present invention is the display device in the elevator car according to the first or second aspect , wherein the video analysis unit determines the age group based on the appearance of the passenger. It is characterized by determining the number of people.

The display device in the elevator car according to claim 4 according to the present invention is the display device in the elevator car according to claim 1 or 2 , wherein the video display unit is for crime prevention based on the determination result. The display content is displayed on the display unit.

A display device in an elevator car according to a fifth aspect of the present invention is the display device in an elevator car according to any one of the first to fourth aspects, wherein the video analysis unit is installed in the elevator car in advance. It is determined whether there is a person other than a person having a registered appearance, and when a positive determination is made, the video display unit displays the display content for crime prevention on the display unit. .

The display method in the elevator car according to claim 6 according to the present invention differs from (a) a step of analyzing an image in the elevator car to determine the appearance of the passenger, and (b) based on the determination result. Displaying the display content, wherein the step (a) is a step of analyzing the video in the elevator car and determining the number of persons for each gender from the appearance of the passenger. .

The display method in the elevator car according to claim 7 according to the present invention is the display method in the elevator car according to claim 6 , wherein only a male is in the elevator car in the step (a). When it is determined, the display content other than the security video is displayed on the display unit in the step (b).

According to the first, second , fifth, sixth, and seventh aspects of the invention, it is possible to display optimum information on the display unit in accordance with the passenger occupying the elevator. In addition, optimal information can be displayed on the display unit without losing the gender information that occupies the majority of passengers.

According to the invention of claim 3 Symbol placement, without impairing the information age that a majority of the rider, can be displayed on the display unit the best information.

According to the fourth aspect of the present invention, information for crime prevention can be displayed on the display unit only when necessary, and the efficiency of providing information can be improved.

(Embodiment)
FIG. 1 shows a schematic configuration diagram of a display device in an elevator car according to an embodiment of the present invention. The elevator car 10 includes a monitor 11, an operation unit 12 for a passenger to select a destination floor, a monitoring camera 30 that captures images in the car in the elevator car 10, a monitoring camera 30, a monitor 11, and a communication line. The video display devices 20 connected to each other are installed.

  The video display device 20 includes a video analysis unit 21, a control unit 22, a recording medium 23, a video function unit 24, and a display function unit 25. The video analysis unit 21 performs image analysis on the video in the car from the surveillance camera 30, determines the appearance of the passenger in the elevator car 10, the number of passengers in the elevator car 10 for each gender, children (age) Determine the number of people by stratum).

  The control unit 22 selects a video to be displayed on the monitor 11 based on the determination result from the video analysis unit 21, and outputs a control signal for reproducing the video to the video function unit 24.

  Based on the received control signal, the video function unit 24 can selectively output the in-car video from the monitoring camera 30 and a plurality of types of video stored in the recording medium 23 to the display function unit 25. In addition, the video function unit 24 can record the in-car video from the monitoring camera 30 on the recording medium 23.

  The display function unit 25 receives the video output from the video function unit 24 and displays the video on the monitor 11.

  A plurality of types of videos are recorded on the recording medium 23 as described above. The multiple types of video are, for example, a crime prevention video for explaining the crime prevention function of the elevator as shown in FIG. 2A, a notification video for notifying an elevator check date as shown in FIG. Note that these videos may be input from the outside of the video display device 20 and recorded on the recording medium 23 by the control unit 22.

  Note that the control unit 22, the video function unit 24, and the display function unit 25 can be regarded as a video display unit. That is, the video display unit displays different display contents on the monitor 11 based on the determination result from the video analysis unit 21.

  Then, an example of operation | movement of the display apparatus in the elevator car concerning this Embodiment is demonstrated with reference to the flowchart shown in FIG.

  First, in step S <b> 1, the video analysis unit 21 analyzes the video in the car photographed by the monitoring camera 30, determines the appearance of the passenger in the elevator car 10, and determines whether it is sex, adult or child. . Specifically, for example, gender and adult or child are determined by the following method. First, the occupant's face area is determined by skin color extraction or the like, and the color image is converted into a black-and-white gray image having only luminance values. Edge information (wrinkles, eyes, mouth, etc.) in the face area is detected by the Sobel filter, and cumulative histograms in the vertical and horizontal directions of the edge image are obtained.

  Then, an NN (neural network) is made to learn a cumulative histogram pattern based on a plurality of sample images, and a gender and an adult or a child are determined from the cumulative histogram of the passenger. In other words, the gender and whether it is an adult or a child are determined based on the shape of the face, eyes, mouth, and the like. (Nakano Miyoko, “Automated Intelligent Feature Extraction and Estimation for Age / Gender / Race Estimation”, [online], 2005, Telecommunications Advancement Foundation, [March 1, 2006 search], Internet URL : See http://www.taf.or.jp/publication/kjosei_20/pdf/p504.pdf)

  In addition, for example, a technique of extracting some characteristics of the passenger and determining the gender may be used. In this method, a person region is first extracted from the difference from the background image. The face region and the hair region are determined by extracting black and skin color from the upper one-sixth region of the person region, and the length of the hair is obtained. Next, the edge of the skirt skirt is detected by a Sobel filter in an area of 3/5 or less from the top of the person area and 1/8 or more from the bottom. Numeric values are given according to the length of the hair and the edge of the skirt hem, and these numeric values are grasped as one feature vector.

  A male feature vector model and a female feature vector model are determined by clustering from feature vectors of a plurality of sample images using the K-means method, and the distance between the passenger feature vector and the male feature vector model and the passenger feature vector are determined. Gender is determined based on the distance between the model and the female feature vector model. In other words, the sex is determined based on the length of the hair and whether or not the skirt is worn. (Hiroyuki Yamase, “Gender Identification Using Colored Whole Body Images”, [online], February 16, 1996, Nara Institute of Science and Technology, [Search March 1, 2006], Internet URL: http: / /chihara.aist-nara.ac.jp/public/research/thesis/master/96/yamase9451118.pdf)

  Further, for example, a method of detecting the height of the passenger and determining whether the passenger is an adult or a child may be combined. In this method, the height is similarly obtained from the person area extracted from the difference from the background image. For example, if the height is 160 cm or more from the average height and standard deviation of sixth graders nationwide, it is determined as an adult, and if it is less than 160 cm, it is determined as a child. Further, if the average height and standard deviation of a third-year high school woman nationwide is 175 cm or higher, it is determined as an adult male.

  In the present invention, any of the above methods may be used, and other methods may be used. Also, each of the above methods may be weighted and used in combination. In this case, the discrimination accuracy can be improved.

  In step S2, the number of adult men, the number of adult women, and the number of children are determined based on the result of determining the appearance of the passenger in step S1, and different operations are performed in the following three cases. To do.

  As a result of the determination in step S2, if only one person is in the elevator car 10, or only an adult man is on board, or if there are a plurality of adult women and children, the control unit in step S3 22 outputs a control signal for selecting the notification video recorded in the recording medium 23 to the video function unit 24. The video function unit 24 takes out the notification video from the recording medium 23 and outputs it to the display function unit 25. The display function unit 25 displays the received notification video on the monitor 11.

  As a result of the determination in step S2, if there are three or more people including an adult woman or one child and another adult man in the elevator car 10, the control unit 22 records on the recording medium 23 in step S4. A control signal for selecting the crime prevention video and the notification video that have been set is output to the video function unit 24. The video function unit 24 extracts the security video and the notification video from the recording medium 23 and outputs them to the display function unit 25. The display function unit 25 displays the received security video and notification video on the monitor 11. Note that the security video and the notification video may be displayed alternately by switching at regular intervals, or may be displayed simultaneously by dividing the screen.

  If it is determined in step S2 that an adult woman or one child and one adult man are in the elevator car 10, the control unit 22 displays the security video recorded on the recording medium 23 in step S5. A control signal to be selected is output to the video function unit 24. The video function unit 24 takes out the security video from the recording medium 23 and outputs it to the display function unit 25. The display function unit 25 displays the received security video on the monitor 11. That is, at this time, the security image is always displayed on the monitor 11.

  As the security video, not only the security video recorded on the recording medium 23 but also the video in the car taken by the surveillance camera 30 may be displayed, or only the video in the car may be displayed as the security video. . Similarly, when displaying a notification image, an advertisement image of a general product may be displayed.

  As described above, the crime prevention information and the general information can be displayed on the monitor 11 according to the situation in the elevator, and the information providing efficiency can be improved. Further, when a crime prevention operation is required, a crime prevention video is displayed on the monitor 11, so that it is not necessary to refrain from other people and to initiate the crime prevention operation by itself.

  In this embodiment, a child and an adult woman are regarded as protection targets. However, the present invention is not limited to this. For example, a mode in which a person 70 years or older is regarded as a protection target may be used.

  Note that the discrimination criteria described in this embodiment is an example. For example, a person who has permission to register appearance data of a passenger who mainly uses an elevator and has an appearance that deviates from the data is registered. You may perform a security operation when you are in the elevator. In this case, a passenger who mainly uses the elevator is considered to be protected.

  In the present embodiment, a description is given of a mode in which different display contents such as a security video and a notification video are displayed on the monitor 11 according to the passengers in the elevator car 10, but the present invention is not limited to this. For example, a mode may be adopted in which a plurality of product advertisements are selectively displayed on a monitor in accordance with a passenger in an elevator. For example, when a large number of children are in the elevator car 10, a toy product advertisement is displayed on the monitor 11, and when a large number of people in their 20s are on the monitor 11, a product advertisement for young people is displayed on the monitor 11. As a result, the information provision efficiency can be improved.

It is a schematic block diagram of the video recording device in the elevator car concerning this invention. It is a figure which shows the kind of image | video. 3 is a flowchart showing an operation of the video recording apparatus in the elevator car according to the first embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Elevator car 11 Monitor 21 Image | video analysis part 22 Control part 24 Image | video function part 25 Display function part 30 Surveillance camera

Claims (7)

A surveillance camera for taking images of the car in the elevator car,
A display unit installed in the elevator car;
A video analysis unit for analyzing the video in the car and determining the appearance of a passenger in the elevator car;
A video display unit for displaying different display contents on the display unit based on the determination result,
The display device in an elevator car, wherein the video analysis unit determines the number of persons for each gender from the appearance of the passenger.   2. The video display unit, when the video analysis unit determines that only a man is in the elevator car, displays the display content other than the security video on the display unit. Display device in the elevator car. The display device in an elevator car according to claim 1, wherein the video analysis unit determines the number of people by age group from the appearance of the passenger. The display device in an elevator car according to claim 1, wherein the video display unit displays the display content for crime prevention on the display unit based on the determination result . The video analysis unit determines whether or not there is a person other than a person having a pre-registered appearance in the elevator car, and when a positive determination is made, the video display unit displays the display content for crime prevention. Is displayed on the display unit. The display device in an elevator car according to any one of claims 1 to 4 .   (A) analyzing the video in the elevator car to determine the appearance of the passenger;
  (B) displaying different display contents based on the determination result;
Run
  The step (a) is a step of analyzing an image in the elevator car and determining the number of persons for each gender based on the appearance of the passenger, wherein the display method in the elevator car is characterized in that . The display content other than the security video is displayed on the display unit in the step (b) when it is determined in the step (a) that only a man is in the elevator car. The display method in the elevator car described in 1 .

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