KR100565318B1 - Shooting guide method and device of the camera phone - Google Patents

Abstract

The present invention relates to a technology for guiding a suitable shooting position by voice when photographing a subject using a camera fixedly installed on the back of a mobile phone. The present invention includes a measurement image acquisition process for processing the image signal captured by the user image processing; An error calculating process of calculating an error by comparing the contour of the stored subject image with a reference contour of the stored image previously photographed at a reference position; According to the calculated error, it is achieved by a guide voice output process of repeatedly outputting a guide voice signal for causing the user to change the position of the camera to the correct position.

Description

 Shooting guide method and device of camera phone {PHOTOGRAPHING GUIDANCE METHOD AND APPARATUS FOR CAMERA PHONE}

1 is a rear view of a camera phone according to the prior art.

2 is a block diagram of a photographing guide device for a camera phone according to the present invention;

3 is a signal flow diagram illustrating a process of a photographing guide method of a camera phone according to the present invention;

*** Description of the symbols for the main parts of the drawings ***

21: camera lens unit 22: image signal processing unit

23: central processing unit 24: RAM

25: flash memory 26: LCD controller

27: LCD 28: MIDI integrated device

29: amplifier

The present invention relates to a technology for guiding a proper shooting position when photographing a subject using a camera mounted on a mobile phone, and particularly, when a user photographs his / her own image using a camera fixed to the back of a terminal, The present invention relates to a photographing guide method and apparatus for a camera phone.

In recent years, the penetration rate of mobile phones has been increasing rapidly and is becoming a necessity of modern people. Such a mobile phone can be referred to as a multimedia communication device in terms of its function as it provides not only a unique voice call service but also various data transmission services and various additional services. In recent years, camera phones, which are equipped with a digital camera and which can immediately photograph a desired subject, have emerged and are receiving good responses from consumers.

1 is a schematic view showing a camera mounting portion of the camera phone according to the prior art, as shown in this, the battery 12 is mounted from the middle portion to the lower end on the back of the camera body 11, the camera on one side of the top (13) is fixedly installed, the upper center portion is composed of a structure in which a mirror 14 for confirming the state of being photographed is configured, the operation thereof is as follows.

On the back of the camera body 11, the battery 12 is mounted from the middle portion to the lower portion, and the camera 13 is fixedly installed on one side of the upper end, and the user uses the camera 13 to target the subject. When shooting, the shooting status is checked through the LCD installed inside the camera.

However, when the user directly photographs his or her own appearance using the camera 13, since the camera 13 module is fixedly installed, it is impossible to rotate the camera 13 so that the user cannot check his photographing appearance through the LCD. Therefore, the user photographed while roughly confirming his own image reflected on the small reflective mirror 14 installed next to the camera 13.

In the conventional camera phone fixed to the back of the main body as described above, when taking a picture of yourself, it is indirectly confirmed to be taken by using a small reflecting mirror installed on the side of the camera, due to the angle of refraction of the mirror It was very difficult to fit yourself in the very center of the room and the size of the mirror was so small that it was difficult to see the reflection on the mirror as the shooting distance increased.

Accordingly, an object of the present invention is to identify the correct shooting position through the image analysis in the camera when directly photographing the user's own shape using a camera fixed to the back of the mobile phone to output a guide voice to shoot at that position In providing.

According to an embodiment of the present invention, a photographing guide method of a camera phone includes: a first process of allowing a user to set a photographing option and then storing the contents; A second process of inputting an image signal photographed by a user and processing the image signal and storing the same; A third step of calculating an error by comparing the image contour of the stored subject to a previously imaged image position of the stored subject and comparing the image contour with the image contour of the stored subject; According to the calculated error, a fourth process of repeatedly outputting a guide voice signal for causing the user to change the position of the camera to the correct position is necessary.

2 is a block diagram of a photographing guide apparatus for a camera phone according to the present invention, and as shown therein, a camera lens unit 21 for inputting a photographed image; An image signal processor 22 for compressing an image signal input through the camera lens unit 21; The image signal input from the image signal processor 22 is image-processed, the image is captured at a reference position in advance, and the image is processed to compare an image of a stored subject to calculate an error, and guide voice control of the shooting position accordingly. A central processing unit (23) for generating a signal; A RAM 24 used as an image data buffer of the central processing unit 23; A flash memory (25) for storing processing data of the central processing unit (23); An LCD controller 26 and an LCD 27 for displaying images and other images captured by a user; A MIDI (Musical Instrument Digital Interface) integrated device (28) for generating a photographing position guide sound source according to the guide voice control signal output from the central processing unit (23); It is composed of an amplifier 29 and a speaker (SPK) for outputting a voice signal output from the MIDI integrated device 28, described in detail with reference to Figure 3 attached to the operation and effect of the present invention configured as described above Same as

The camera to which the present invention is applied is fixedly installed on the back of the mobile phone main body as shown in FIG. 1, and the user usually photographs a person, an object or a landscape other than himself / herself using this camera.

At this time, the captured image signal is input to the image signal processor 22 through the camera lens unit 21 and compressed in a predetermined format. In addition, the image signal output from the image signal processor 22 is processed by the central processing unit 23 in a predetermined format and displayed on the LCD 27 through the LCD controller 26. Therefore, the user can shoot while directly checking the state of the subject photographed through the LCD 27.

On the other hand, when the user wants to directly photograph themselves using the camera, since the camera module is fixedly installed, it is impossible to rotate, and thus the user is unable to see his / her appearance being photographed through the CD 27. .

However, the user can take a picture of herself without any difficulty by setting an accurate shooting position with reference to the guide voice output through the following process.

To this end, the user first sets shooting options. As a first option, the user sets a shooting distance, and sets a distance (eg, a middle distance) of one of a "close distance", a "middle distance", or a "distant distance" (S1).

In addition, as the second option, the type of image is set, and one of "1 person", "2 person" or "multiple people" (for example, 2 persons) is set (S2).

For reference, the CPU 23 determines the ideal photographing distance and the position of the center coordinate according to the user's option setting result. For example, the photographing distance, that is, the ideal reference distance between the user and the camera, may set the distance difference between the upper end of the user's face and the top of the LCD 27 as the ideal photographing distance on the screen. In addition, when the photographing subject is two including the user, an intermediate position of two faces on the screen may be set as the center coordinate.

When the user starts shooting after the option setting is finished, the image input through the camera lens unit 21 is compressed by the image signal processor 22 and then predetermined by the central processing unit 23 to the RAM 24. It is stored in units (fields or frames) (S3).
Subsequently, the central processing unit 23 calculates an error by comparing the contour of the subject image photographed and stored just before the above with the reference contour of the subject image photographed and stored beforehand.
For reference, the reference contour of the subject image which is photographed and stored in advance is stored as "one person" or "two people" or "many people" in the "close distance" or "middle distance" or "far distance". It means the contour stored by image processing the captured image. Of course, the reference contour is set to an appropriate size (or ratio) based on the screen.

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Thereafter, the central processing unit 23 outputs a control signal corresponding to the calculated error, whereby a guide voice signal for causing the user to change the position of the camera to the correct position in the MIDI integrated device 28 is provided. This is amplified to a level suitable for output to the outside from the amplifier 29, and then output through the speaker (SPK) (S5).
For example, if the contour of the subject image photographed immediately before the comparison is found to be smaller than the reference contour, a guide voice signal for narrowing the shooting distance is output, and if the positions of the two contours are shifted from each other, they move in the same direction. Outputs a guide voice signal.

If it is determined that the shooting position of the camera is within the preset error range by repeating the above process (S3-S5), it ends after outputting a guide voice for pressing the shooting button (S6).

As described in detail above, the present invention, when taking a picture of the user himself using a camera fixedly installed on the back of the terminal, by guiding by voice to capture the correct shooting position through the image analysis in the camera to shoot at that position, The effect is that the user can easily find and shoot the correct shooting position without looking at the shooting screen.

Claims (8)

A measurement image acquisition process of image processing and storing the image signal photographed by the user; An error calculation process of calculating an error by comparing the contour of the stored subject image with a reference contour of a stored image which is previously photographed at a reference position; And a guide signal output process of outputting a guide signal for causing a user to change the shooting distance according to the calculated error. The method of claim 1, wherein the process of acquiring the measured image comprises allowing a user to set a shooting option and storing the contents. The photographing guide method of claim 2, wherein the photographing option content is a photographing distance and a kind of an image. The method of claim 3, wherein the photographing distance is any one of "close distance", "medium distance" and "distant distance", and the kind of image is any one of "one person", "two person" and "many people". Shooting guide method of the camera phone, characterized in that. delete Image signal processing means for image-processing an image signal of a subject photographed through a camera installed in the camera phone; Control means for calculating a distance error by comparing the contour of the image processed image with a reference contour of an image previously captured and stored at a reference position, and then outputting a guide signal according thereto; And a guide signal output means for processing and outputting the guide signal output from the control means so that a user can recognize the guide signal. The method of claim 1, wherein the photographing distance means the distance between the photographing means and the subject. The method of claim 1, wherein the guide signal is a voice.

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