KR101474304B1 - Method for controlling the digital image processing apparatus and the digital image processing apparatus of operating by the method - Google Patents

Abstract

The present invention relates to a digital image display apparatus and a digital image display method which display a face expression recognition recognition result by displaying a case where a facial region is small in size and a face indicating an area including a face when the facial expression is recognized, A control method of the processing apparatus, and a digital image processing apparatus controlled by the method. Therefore, it is possible to effectively utilize the function of recognizing facial expressions.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital image processing apparatus and a digital image processing apparatus, }

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a digital image processing apparatus capable of recognizing facial laughter or blinking of eyes and a control method thereof.

Recently, a digital image processing apparatus that provides a face recognition function has been developed, and further, a digital image processing apparatus that recognizes a specific facial expression such as a smile or a blink of the face has been developed.

The facial expressions of the above-mentioned face can be recognized only when the size of the recognized face is larger than a certain size. In the conventional digital image processing apparatus, even if the user sets the facial expression recognition function, the facial expression is not recognized when the facial expression recognition is impossible because the recognized facial size is small.

An object of the present invention is to provide a digital image processing apparatus and a control method thereof that can effectively inform a user when a facial expression is not recognized due to a small size of a facial region.

The method includes the steps of inputting first image data representing an image including a face, recognizing a face region from the first image data, determining a size of the recognized face region as a size Displaying a first mark indicating the face area when the size of the face area is large enough to recognize a facial expression, and if not, displaying the first mark, And displaying a second mark (mark) indicating the face area.

Recognition of the facial expression may be to recognize the smile or blink of the face.

Wherein the step of determining whether the size of the face region is a size capable of recognizing a facial expression includes the steps of: determining whether a size of the face region is larger than a boundary of a first face region size capable of recognizing the smile of the face; And determining whether the size of the face region is larger than the boundary of the second face region size in which the blinking of the eyes can be recognized.

Displaying the first mark if the size of the face region is larger than a boundary of the first face region size and a boundary of the second face region size and displaying a boundary of the first face region size and a size of the second face region size And displays a third mark indicating the face area if the second mark is smaller than any of the boundary of the first face area size and the boundary of the second face area size . The first mark may be displayed if the size of the face area is larger than a boundary of the first face area size and the boundary of the second face area size.

The control method of the digital image processing apparatus may further include changing a size of the face region according to a control signal from the outside. Accordingly, it is possible to display the first mark or the second mark by determining the size of the changed face area. That is, the input image changes according to the control signal from the outside, and the size of the face region can be changed. The first mark or the second mark can be displayed according to the size change of the face region. It is possible to display the first mark or the second mark according to an image input in real time.

If the size of the face area can recognize the expression of the face, the second image data can be generated by displaying the first mark and recognizing the expression of the face. The second image data is input by a photographing signal, and the second image data can be compressed to generate an image file. And restoring the second image data from the image file to display an image corresponding to the second image data.

According to another aspect of the present invention, there is provided a face recognition apparatus including a face recognition unit for recognizing a face region from first image data representing an image including a face, a size determination unit for determining a size of the face region, And a mark display control unit for controlling display of a mark indicating the face area according to the size determination unit of the face area.

The expression of the face may be laughing or blinking. Accordingly, it is possible to determine whether the size of the face region is a size capable of recognizing laughs or whether the size of the face region can recognize blinks.

If the size of the face area is a size capable of recognizing the facial expression as a result of the determination of the size of the face area, the mark display controller displays a first mark indicating the face area, If the facial expression can not be recognized, the mark display control unit may display the second mark indicating the face area.

The size determination unit of the face area may include a size determination unit of a first face area that determines whether the size of the face area belongs to a size range of a first face area that can recognize the smile of the face, And a size determination unit of a second face region that determines whether the eye blinking is within a size range of a second face region that can recognize the blinking of eyes.

If the size of the face region belongs to both the size range of the first face region and the size range of the second face region as a result of the size determination unit of the first face region and the size determination unit of the second face region, The mark display control unit displays the first mark, and if not all, the mark display control unit displays the second mark, and the mark display control unit displays any one of the size range of the first face area and the size range of the second face area The mark display control unit may display the third mark indicating the face area. The mark display control unit may control to display the third mark by distinguishing the case of belonging only to the size range of the first face area and the case belonging to only the size range of the second face area.

The digital image processing apparatus may further include a facial expression recognition unit for recognizing facial expressions. The facial expression recognizing unit may include a laughing recognition unit for recognizing the laughing of the face or an eye blinking recognition unit for recognizing the blinking of the face.

In the digital image processing apparatus, if the size of the face region is determined to be a size capable of recognizing the facial expression of the face, the facial expression recognition unit can recognize the facial expression of the facial region.

The digital image processing apparatus includes an image signal processing unit for recognizing the facial expression in the facial expression recognition unit and generating second image data, an encoder for compressing the second image data to generate an image file, And a decoder for restoring the second image data from the file.

The present invention informs the user of the situation when the size of the face area is small and the facial expression is not recognized. Particularly, when a plurality of faces are photographed, when a user recognizes facial expression recognition on each recognized face to recognize facial expressions for all of the facial expressions, It is possible to perform shooting in accordance with the user's intention. Therefore, a desired image can be obtained, and the satisfaction and reliability of the function of recognizing the facial expression can be improved.

Hereinafter, a digital image processing apparatus for executing the control method of the digital image processing apparatus according to the present invention will be described in detail with reference to the accompanying drawings.

1 is a block diagram showing a digital image processing apparatus according to an embodiment of the present invention. In this embodiment, a digital camera 100 is exemplified as an example of a digital image processing apparatus.

Referring to FIG. 1, the digital camera 100 includes an optical unit 11, an optical driver 12, and an optical driver 13.

The optical unit 11 transmits an optical signal from the subject to the image pickup device 21. [ Specifically, the optical unit 11 may include a lens for condensing the optical signal, a diaphragm for adjusting the amount (amount of light) of the optical signal, a shutter for controlling the input of the optical signal, and the like. In addition, the lens includes a zoom lens for controlling the angle of view to be narrowed or widened according to a focal length, a focus lens for focusing the subject, and the like, each of which may be composed of one lens , And a plurality of lens groups.

The optical driver 12 controls the position of the lens, the opening / closing of the diaphragm, the operation of the shutter, and the like. The focus can be adjusted by moving the position of the lens. Further, the amount of light can be adjusted by adjusting the aperture or shutter opening / closing.

The optical drive controller 13 receives the input image information or user input information in real time from the digital signal processor (DSP) 70 and generates a control signal for driving the optical unit 11 based on the information . The control signals are transmitted to the optical driver 12 to drive the optical driver 11.

The digital camera 100 includes an image pickup device 21, an ADC 22, and an image pickup control unit 23.

The optical signal transmitted through the optical section 11 reaches the light-receiving surface of the image pickup element 21 and forms an image of the object. The image pickup device 21 may be a CCD (Charge Coupled Device) or a CIS (Complementary Metal Oxide Semiconductor Image Sensor) for converting an optical signal into an electric signal. In the case of an electronic digital photographing apparatus, it is also possible to control the photographing of the image by shutting off the power supplied to the image pickup device 21 instead of the shutter.

The ADC 22 processes the video signal output from the image pickup device 21 to remove high frequency noise, adjusts the amplitude (auto gain control (AGC)), and converts the digital signal into a digital signal. Since the image signal output from the image pickup device 21 is an analog signal, the ADC 22 digitizes the analog signal to generate image data. For example, the image data is referred to as RAW data. Then, the ADC 22 outputs the image data to the DSP 70.

The image pickup control unit 23 receives the image information inputted by the user in real time or input information of the user from the digital signal processing unit (DSP) 70 and controls the image pickup device 21 and the ADC 22 based on the information Signal.

The digital camera 100 includes an operation unit 30, a recording unit 40, a communication unit 50, and a display unit 60.

The operation unit 30 is a place where a control signal from the outside such as a user can be input. The operation unit 30 includes a release button for generating a shutter-release signal for photographing a photograph by exposing the image pickup device 21 to light for a predetermined period of time, a power button for generating a control signal for supplying power, A wide angle-zoom button and a telephoto-zoom button for widening or narrowing the angle of view, a mode selection of a character input mode, a shooting mode, a playback mode, a white balance setting function selection, . The operation unit 30 having such functions may be implemented in any form that the user can input, such as a keyboard, a touch pad, a touch screen, a remote controller, or the like.

The recording unit 40 may store image files and other information. The image file may be a file obtained by compressing the photographed image data, for example, a file compressed in the form of JPEG or the like. The recording unit 40 may take the form of a built-in memory or an external memory. External memory is a memory card, external hard disk, etc.

And an interface 50 for connecting the external memory. The interface 50 may be connected to an external digital device such as a mobile communication device such as a mobile phone, a PDA, a personal computer, a computer server, a display device, or the like. And transfers necessary information between the digital photographing apparatus 100 and the external memory or digital device through the interface 50. [ As the transmission method, both of them can be used, for example, USB, RS-232, IEEE 1394, or the like.

The digital camera 100 also includes a display unit 60 for displaying an operation state of the digital camera 100 or an image photographed by the digital camera 100. The display unit 60 may include a display control unit 61, a data driving unit 62, a scan driving unit 63, and a panel 64. The display control unit 61 converts the image data provided from the control unit 70 according to the display method of the panel 64 and outputs the converted image data to the data driving unit 62 and the scan driving unit 63. The data driver 62 supplies the data signal to the scan driver 63 and the scan driver 63 supplies the scan signal to the panel 64. The panel 64 displays an image according to the data signal and the scan signal. As the panel 64, a liquid crystal display panel (LCD), an organic light emitting display panel (OLED), an electrophoretic display panel (EDD), or the like can be used.

The digital camera 100 recognizes a face from the image data, determines whether the size of the face area including the face is a size capable of recognizing the face, and if there is a case where the face can be recognized, And a DSP 70 for controlling the display so that the marks indicating the respective marks are displayed differently.

Specifically, one embodiment of the DSP 70 will be described with reference to FIG.

The DSP 70 includes a video signal processor 71, a face recognizer 72, a face area size determiner 73, a facial expression recognizer 74, and a mark display controller 75.

The video signal processing unit 71 converts the video signal inputted through the optical unit 11, the imaging device 21, and the ADC 22 according to the human's time. For example, a gamma correction, a color filter array interpolation, a color matrix, a color correction, and a color correction are performed on the image data to convert an image signal to a human's viewpoint. , Color enhancement, and the like.

The face recognizing unit 72 recognizes a face from the image data. The face recognition method may form a template in which brightness information of various faces is recorded in advance, and recognize the face from the image data while matching the template with the image data. Or converting the image data into luminance data, color data, and chroma data, and recognizing the face based on the luminance change in the vertical direction in the areas showing flesh color using the luminance data and the spatial distribution of the pixels of the areas can do. Alternatively, a face can be recognized by detecting feature points of a face such as eyes, mouth, and the like.

The face area size determination unit 73 determines whether the size of one area including the face recognized by the face recognition unit 72 (hereinafter, referred to as 'face area') is a size capable of recognizing the facial expression. The face region may be arbitrarily set by a manufacturer, a user, etc., such as an area including the face or an area including the boundary of the face. In addition, the expression of the face includes smile, blink, and the like. In the case of recognizing a plurality of facial expressions, it is possible to determine the boundary of the facial region size for recognizing each facial expression and the size of the facial region recognized by the facial recognition unit 72.

3, the face area size determination unit 73 includes a first face area size determination unit 73a and a second face area size determination unit 73b.

The first face region size determination unit 73a compares the size of the face region recognized by the face recognition unit 72 with the boundary of the first face region size in which the smile of the face can be recognized.

The second face area size determination unit 73b compares the size of the face area with the boundary of the second face area size that can recognize blinking.

If the size of the face area is a size capable of recognizing the facial expression as a result of the determination of the facial area size determination unit 73, the facial expression recognition unit 74 can recognize the facial expression of the facial area, The facial expression of the face area can be recognized. And controls the mark display control unit 75 to display the first mark indicating the face area. If the face area size determining unit 73 determines that the size of the face area is not large enough to recognize the facial expression, the mark display control unit 75 controls to display the second mark indicating the face area.

Referring to FIG. 4, in the case where laughter or blinking is perceived by facial expression, the facial expression recognition unit 74 may include a laughter recognition unit 74a and an eye blink recognition unit 74b.

If the size of the face region is larger than the boundary of the first face region size in which the smile can be recognized, the smile recognition unit 74a recognizes the smile of the face region in the first face region size determination unit 73a . If the size of the face area is larger than the boundary of the second face area size in which the blinking can be recognized by the second face area size determination unit 73b, Eye blinking can be recognized.

The smile of the face and the blink of the eyes are stored in the database for the brightness information of the smile, the face of the eyes, and the eyes of the eyes as well as the face recognition method, and the input image data and the template are matched and recognized have. Or the luminance information and the color information concerning the mouth shape of the smiling face, the eye shape, the eye shape of the blinking face, and the like are stored in a database, and the face expression can be recognized by comparison with the image data.

Alternatively, the first face area size determination unit 73a and the second face area size determination unit 73b may operate in conjunction with each other. Specifically, when the boundary of the first face area size is larger than the boundary of the second face area size in the first face area size determination unit 73a, the determination result of the first face area size determination unit 73a If the size of the face area is larger than the boundary of the first face area size, it is naturally larger than the boundary of the second face area size, so that the first mark pointing to the face area in the mark display control part 75 is displayed . The laughter recognizing unit 74a and the blinking recognizing unit 74b can recognize the smile of the face and the blinking of the eyes. If the size of the face area is not greater than the size of the second face area size as a result of the determination of the first face area size determination unit 73a and the second face area size determination unit 73b, 75 to display the second mark indicating the face area. This is also true when the size of the face area is not larger than the boundary of the first face area size. Or the third mark indicating the face area in the mark display control unit (75) if the size of the face area is not larger than the boundary of the size of the second face area, can do. The blinking of the face can be recognized by the blinking recognition unit 74b.

  If the smile of the face and / or the blink of the eyes are recognized, the image data can be generated by shooting. At this time, the generated image data can be compressed by the encoder / decoder 76 to generate an image file. The image file is stored in the recording unit 40 and then restored in the playback mode by the encoder / decoder 76 from the image file. The display unit 60 may display an image corresponding to the image data.

The DSP 70 also includes a CPU 77 for controlling the overall operation of the digital camera 100, and a memory 78 for storing data for arithmetic processing of the constituent units and arithmetic processing results. In addition, the memory 78 stores a program for operating the digital camera 100.

The digital camera 100 according to the embodiment recognizes the face region from the image data input in the live view mode and determines whether the size of the recognized face region is a size capable of recognizing the facial expression, Mark the mark differently. Therefore, it is possible to recognize a face area and to recognize the possibility of recognizing the facial expression, so that the user can perform desired photographing.

Hereinafter, a control method of the digital image processing apparatus according to the present invention will be described in detail.

An example of the control method of the digital image processing apparatus will be described with reference to Fig.

According to FIG. 5, a live-view mode is executed (S11).

During the live view mode, the first image data is inputted in real time (S12).

A face is recognized from the first image data (S13). As the face recognition method, luminance information of the first image data is analyzed and compared with a template corresponding to a face. Therefore, whether or not a face is included in the image implemented by the first image data is recognized. The template is predetermined by analyzing a plurality of faces to form a database. Alternatively, the face color can be recognized from the color information of the first image data, or the feature points of the mouth, eyes, nose, etc. can be extracted from the luminance information.

The size of the recognized face area is judged whether the facial expression is recognizable size (S14).

If the size of the face area is large enough to recognize the facial expression, a first mark indicating the face area is displayed (S15). The first mark may be in the form of a box (□) including the face area inside.

Then, the facial expression is recognized (S16).

Recognizes the facial expression, and generates at least one second image data (S17). For example, in the case of setting a function of automatically shooting when recognizing a smiley face, if the smile of the face is recognized, the second image data can be generated by shooting. Or if the blinking of the eyes is recognized, a plurality of second image data for generating a plurality of images can be generated by recognizing blinking and performing continuous shooting.

Then, the second image data is compressed to generate an image file, and the image file is stored (S18).

If it is determined in step S14 that the size of the face area is not large enough to recognize the facial expression, a second mark indicating the face area is displayed (S19). The second mark may be in the form of a box (□) including a face area like the first mark. However, the second mark and the first mark may display the color or thickness of the box (□) differently.

Since the display of the second mark does not recognize the facial expression of the face region, it is determined whether a shutter-release signal is inputted from the outside of the user or the like (S20).

That is, when the second mark is displayed, at least one second image data is generated when a shutter-release signal is input (S17). The second image data is compressed to generate an image file and stored (S18).

If the shutter-release signal is not inputted, the first image data is continuously inputted (S12), and the subsequent image-taking processes are repeatedly executed.

Another embodiment of the digital image processing apparatus according to the present invention will be described with reference to Fig.

6, a live-view mode is executed first (S21).

Then, image data is input (S22). The input image data can be displayed in a predetermined image on the display unit in real time.

A face is recognized from the image data (S23). The face recognition method is as described above.

It is determined whether the size of the recognized face area is larger than or equal to or larger than the boundary of the first face area size (S24). Here, the boundary of the first face region size is the size of the minimum face region capable of recognizing the smile. A boundary of the second face area size may be set in addition to the boundary of the first face area size. The boundary of the second face area size is a minimum face size capable of recognizing blinking of eyes.

If the size of the face area is larger than or equal to or greater than the boundary of the first face area size, the first mark may be displayed (S25). The method of displaying the first mark may also be varied. For example, the first mark may be displayed as a box including the face area.

And recognizes the smile of the face and the blink of the eyes (S26). In this embodiment, the boundary of the second face area size is larger than the boundary of the first face area size. Accordingly, if the size of the face region is larger than the size of the first face region size, it can be determined that the size of the face region is larger than the boundary of the second face region size. Accordingly, not only the laughter of the face but also the blink of the eye can be recognized.

In the case of setting the function of automatically shooting when detecting a smiley face and setting the function of performing continuous shooting when recognizing the blinking of eyes, since the smile of the face and the blinking of the face are recognized, continuous shooting is performed (S27).

If the size of the recognized face area is not greater than or greater than or equal to the boundary of the second face area size in step S24, the size of the recognized face area is larger than or larger than or equal to the boundary of the second face area size (S28).

If the size of the face area is greater than or equal to the boundary of the second face area size, the third mark is displayed on the face area (S29). The third mark may be displayed in a box shape including the face area, but may be differentiated from the first mark in a different color or different line thickness.

The blinking of the eyes is recognized (S30), and continuous shooting is performed (S27).

In step S28, if the size of the recognized face area is not greater than or greater than or equal to the boundary of the second face area size, the second mark is displayed (S31). The second mark may be displayed in a box shape including the face area, but may be differentiated from the first mark and the third mark by different colors or different line thicknesses.

Then, it is judged whether a shutter-release signal is inputted from the outside of the user or the like (S32). When the shutter-release signal is inputted, the shooting is performed (S33). Otherwise, the image data is inputted continuously (S22).

7 and 8 show operation screens of the digital camera 100 according to the control method according to the embodiment.

Referring to FIG. 7, the 101st image data representing the first image including two persons is input and the first image 1-1 is displayed. According to the above-mentioned 1-1 video, the face of the person behind and the face of the person behind are recognized. Recognizes the faces of the persons before and after the face, and displays the second mark 2 and the third mark 3 together indicating the area including each of the recognized faces. However, the person behind does not recognize the expression of the face because the recognized face area is small. Thus, a box-shaped 2 mark (2) including the face area of the person behind the person behind is displayed so as to point to the area. However, the face size of the person in front is not larger than the border of the first face area size described in FIG. 6, but the eye blink is recognizable because it is larger than the boundary of the second face area size. Therefore, the third mark 3 is displayed in the form of a box including the face area of the person in front.

Referring to FIG. 8, the first-first image data for enlarging the first-first image and implementing the first-second image are input. Therefore, the face size of the person shown in the 1-2 video is also enlarged. The size of the face region of the person in front is larger than the boundary of the first face region size and the boundary of the second face region size, and both the face smile and the eye blink can be recognized. Thus, the first mark 1 is displayed.

The size of the face region of the person behind is smaller than the border of the first face region size but larger than the border of the second face region size and the blinking of the face can be recognized. Thus, the third mark 3 is displayed. The first mark (1), the second mark (2), and the third mark (3) have the same box shape, but different colors may be displayed.

7 and 8 show a rear view of the digital camera 100. The shutter release button 31 for generating the shutter-release signal, the power button 32 for controlling power supply, Function buttons B1 to B13, a playback button () for executing a playback mode, a wide-angle zoom button and a tele-zoom button 33 are provided.

According to the embodiments, when the function of recognizing the facial expression and photographing is set, it is possible to effectively utilize the facial expression recognizing function by informing the user whether or not the facial expression is recognized.

The present invention includes a recording medium on which the above-described methods are embodied by computer-readable codes. A computer-readable recording medium includes all kinds of recording apparatuses in which data that can be read by a computer system is stored. Examples of the computer-readable recording medium include ROM, RAM, CD-ROM, magnetic tape, floppy disk, optical data storage, and the like, and also implemented in the form of a carrier wave (for example, transmission over the Internet) . In addition, the computer-readable recording medium may be distributed over network-connected computer systems so that computer readable codes can be stored and executed in a distributed manner. In addition, functional programs, codes, and code segments for implementing the present invention can be easily obtained by programmers skilled in the art to which the present invention belongs.

While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

1 is a block diagram showing a digital image processing apparatus according to an embodiment of the present invention.

2 is a block diagram showing an embodiment of a digital signal processing unit (DSP) of the digital image processing apparatus shown in FIG.

3 is a block diagram illustrating an embodiment of a face area size determination unit of the DSP shown in FIG.

FIG. 4 is a block diagram illustrating an embodiment of a facial expression recognition unit of the DSP shown in FIG. 2. FIG.

5 is a flowchart for explaining an embodiment of a control method of the digital image processing apparatus according to the present invention.

6 is a flowchart for explaining another embodiment of the control method of the digital image processing apparatus according to the present invention.

7 and 8 are views showing a digital image processing apparatus operating according to the control method shown in FIG.

Claims (15)

Inputting first image data representing an image including a face; Recognizing a face region from the first image data; Determining whether the size of the recognized face region is greater than or equal to a predetermined facial expression recognizable size; Displaying a first mark indicating the face area when the size of the face area is equal to or larger than a predetermined face recognition recognizable size; And And displaying a second mark that is different from the first mark and points to the face area when the size of the face area is less than a predetermined facial expression recognizable size. The method according to claim 1, wherein recognizing the facial expression recognizes a smile or an eye blink of the face. The method of claim 2, wherein the step of determining whether the size of the face region is a size capable of recognizing facial expressions, Determining whether a size of the face region is larger than a boundary of a size of a first face region capable of recognizing the smile of the face; Determining whether a size of the face region is larger than a boundary of a size of a second face region capable of recognizing the blink of the eye. The method of claim 3, further comprising displaying the first mark if the size of the face region is larger than a boundary of the first face region size and a boundary of the second face region size, The second face area size and the second face area size are all smaller than the boundary of the first face area size and the second face area size, And displaying a third mark indicating the face area if the boundary of the first face area size and the boundary of the second face area size is smaller than any one of the boundary of the first face area size and the boundary of the second face area size. 2. The method according to claim 1, further comprising the step of changing the size of the face region according to a control signal from the outside, And displaying the first mark or the second mark by determining the size of the changed face area. The method according to claim 1, further comprising: displaying second mark data and generating second image data representing at least one image by recognizing a facial expression of the face. A recording medium on which a control method of the digital image processing apparatus according to any one of claims 1 to 6 is recorded by a computer-executable program. A face recognizing unit recognizing a face area from first image data representing an image including a face; A size determining unit for determining whether the size of the face area is greater than or equal to a predetermined facial expression recognizing size; And And a mark display control unit for controlling display of a mark indicating the face area according to the size determination unit of the face area. The digital image processing apparatus according to claim 8, wherein the facial expression of the face is a smile or an eye blink. 9. The method according to claim 8, further comprising: If the size of the face area is a size capable of recognizing the facial expression of the face, the mark display control unit displays a first mark indicating the face area, Wherein if the size of the face region is a size that can not recognize the facial expression of the face, the mark display control unit displays a second mark indicating the face region. 10. The method of claim 9, A size determining unit for determining whether a size of the face region is larger than a boundary of a first face region size capable of recognizing the smile of the face, And a second size determining unit for determining whether a size of the face region is larger than a boundary of the second face region size in which the blinking of the eyes can be recognized. 12. The method according to claim 11, wherein the size of the first face area and the size of the second face area determine that the size of the face area is larger than the size of the first face area size and the size of the second face area size The mark display control unit displays a first mark indicating the face area, Wherein the mark display control unit displays a second mark indicating the face area if the boundary of the first face area size and the boundary of the second face area size is smaller than the boundary of the first face area size and the second face area size, Wherein the mark display control unit displays a third mark indicating the face area if the first face area size is greater than the boundary of the first face area size and the second face area size. The digital image processing apparatus according to claim 8, further comprising a facial expression recognition unit for recognizing facial expressions. 14. The method according to claim 13, wherein if the size of the face region is a size capable of recognizing the facial expression of the face as a result of the size determination unit of the facial region, the facial expression recognition unit recognizes the facial expression of the facial region Processing device. 15. The apparatus according to claim 14, further comprising: a video signal processor for recognizing the facial expression in the facial expression recognition unit and generating second image data representing at least one image; An encoder for compressing the second image data to generate at least one image file; And And a decoder for restoring the second image data from the image file.

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