KR101436321B1 - Digital photographing apparatus, method for controlling the same, and recording medium storing program to implement the method - Google Patents

Abstract

The present invention relates to a digital photographing apparatus capable of easily manipulating a face to be located at a desired position within a photographed image when photographing the user himself / herself by using the digital photographing apparatus, a control method thereof, and a program for executing a control method An image pickup device for obtaining data on an image from light incident through the lens; a face recognition unit for obtaining a position of a face part from image data acquired from light incident on the image pickup device; A preset unit for setting a position of a face part in an image to be photographed according to a user's selection, and a controller for adjusting the position of at least one of the lens and the image pickup element, The position of the face part acquired by the face recognizing part from the acquired image data, Such that the position of the face portion is set in the legend government, there is provided a digital recording apparatus, a recording medium storing a program for executing a control method and a control method which is characterized in that it comprises a positioning part.

Description

[0001] The present invention relates to a digital photographing apparatus, a control method thereof, and a recording medium storing a program for executing the control method,

The present invention relates to a digital photographing apparatus, a control method therefor, and a recording medium storing a program for executing the control method. More particularly, the present invention relates to a digital photographing apparatus, A control method thereof, and a recording medium storing a program for executing the control method.

Generally, a digital photographing apparatus stores data on an image obtained by a photographing operation in a photographing mode on a storage medium, and displays the image on a display unit using data stored in the storage medium.

The user of such a digital photographing apparatus photographs himself / herself by using a digital photographing apparatus as schematically shown in Fig. 1A. However, in this case, since the display unit for displaying the live view image, which can be a real-time moving image obtained from the light incident on the image pickup device, is usually arranged on the opposite side of the lens side of the digital photographing apparatus, It is impossible to know which composition image will be obtained (a digital photographing device capable of rotating a display portion for displaying a live view image protruding from the outside is excluded). Accordingly, a situation may occur in which a part of the user's face is not included in the finally acquired still image, as shown in FIG. 1B, and accordingly, the user must repeatedly photograph a plurality of times to obtain a still image of a desired composition There was a problem.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems and it is an object of the present invention to provide a digital photographing apparatus capable of easily manipulating a face to be located at a desired position within a photographed image when photographing the user himself / And a recording medium storing a program for executing the control method and the control method.

The present invention relates to a lens system, An image pickup element for obtaining data on an image from light incident through the lens; A face recognition unit for acquiring a position of a face part from image data acquired from light incident on the imaging element; A presetting unit for setting a position of a face part in an image to be photographed according to a user's selection; And a control unit for controlling the position of at least one of the lens and the image pickup element so that the position of the face part acquired by the face recognition unit from the image data obtained from the light incident on the image pickup element after the position adjustment is set in the preset unit And a position adjusting unit for adjusting the position of the face part.

According to another aspect of the present invention, the position adjustment unit may be configured to adjust the position of at least one of the lens and the image pickup device so as to prevent the image sharpness from being degraded due to the camera shake.

The present invention also provides a method of controlling a digital photographing apparatus for obtaining data on an image from light incident on an image pickup element through a lens, comprising: setting a position of a face portion in an image to be photographed according to a user's selection; Obtaining a position of a face part from image data acquired from light incident on the imaging element; And adjusting the position of at least one of the imaging element and the lens so that the position of the face portion from the image data acquired from the light incident on the imaging element after the position adjustment becomes the set position .

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According to another aspect of the present invention, the digital photographing apparatus has an image shake prevention function for preventing a decrease in image clarity due to camera shake by adjusting a position of at least one of a lens and an image pickup element, and the step (b) Prevention function can be used.

The present invention also provides a recording medium storing a program for executing the above method.

According to the digital photographing apparatus of the present invention, the control method thereof, and the recording medium storing the program for executing the control method according to the present invention, when the user himself / herself is photographed using the digital photographing apparatus, The face can be easily manipulated to be positioned.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

2 is a block diagram schematically showing a digital photographing apparatus according to an embodiment of the present invention.

The overall operation of the digital photographing apparatus is governed by the CPU 100. [ The digital photographing apparatus is provided with an operation unit 200 including a key for generating an electrical signal from the user. An electrical signal from the operation unit 200 is transmitted to the CPU 100 so that the CPU 100 can control the digital photographing apparatus in accordance with an electrical signal.

The CPU 100 recognizes the signal and controls the lens driving unit 11, the diaphragm driving unit 21, and the imaging device control unit 31 as an electrical signal from the user is applied to the CPU 100 , Thereby controlling the position of the lens 10, the degree of opening of the diaphragm 20, and the sensitivity of the imaging element 30, respectively. The image pickup element 30 generates data relating to an image from the light incident through the lens 10. The analog-to-digital converter 40 converts the analog data output from the image pickup element 30 into digital data. Of course, the analog-to-digital conversion section 40 may not be required depending on the characteristics of the imaging element 30. [ On the other hand, the position adjusting section (not shown) adjusts the position of at least one of the lens 10 and the image pickup element 30. The operation of the position adjusting unit will be described later.

The data from the image pickup device 30 may be input to the digital signal processing unit 50 via the memory 60 or may be input to the digital signal processing unit 50 without going through the memory 60, (Not shown). Here, the memory 60 is a concept including ROM, RAM, and the like. The digital signal processing unit 50 can perform digital signal processing such as gamma correction and white balance adjustment as necessary. As will be described later, the digital signal processing unit 50 may include a face recognition unit (not shown) for acquiring the position of the face part from the image data acquired from the light incident on the image pickup device 30. [ Of course, the face recognizing unit may be a separate component, not a part of the digital signal processor 50, or may be a part of other components. The operation of the face recognition unit will be described later.

The image data output from the digital signal processing unit 50 is transmitted to the display control unit 81 through the memory 60 or directly. The display control unit 81 controls the display unit 80 to display an image on the display unit 80. The image data outputted from the digital signal processing section 50 is input to the memory 60 or directly to the storage / read control section 71. The storage / And stores the image data in the storage medium 70. Of course, the storage / read control unit 71 reads out data relating to an image from the image file stored in the storage medium 70 and inputs it to the display control unit 81 through the memory 60 or another path, 80 to display the image. The storage medium 70 may be removable or permanently attached to the digital photographing apparatus.

In such a digital photographing apparatus, the face recognizing unit acquires the position of the face portion from the image data acquired from the light incident on the image pickup element 30. [ Here, the image obtained from the light incident on the image pickup device 30 means a live view image which can be a real-time moving image obtained from the light incident on the image pickup device 30. [ When the position of the face part is obtained in this way, the position of the obtained face part is compared with the preset position, and the position adjustment part adjusts the position of at least one of the lens 10 and the image pickup device 30, The position of the face portion acquired by the face recognizing portion from the image data acquired from the light incident on the imaging element 30 is set to a predetermined position.

As described above with reference to Figs. 1A and 1B, the user of the digital photographing apparatus photographs himself / herself by using the digital photographing apparatus. However, in this case, since the display unit for displaying the live view image, which can be a real-time moving image obtained from the light incident on the image pickup device, is disposed on the opposite side from the lens side of the digital photographing apparatus, I do not know what image I will get. Accordingly, a situation may occur in which a part of the user's face is not included in the finally acquired still image. Accordingly, there is a problem in that a still image of a desired composition can be obtained by repeatedly shooting a plurality of times.

However, in the case of the digital photographing apparatus according to the present embodiment, the face recognizing unit checks the position of the face portion in the real-time live view image, and according to the result, the position adjusting unit adjusts the position of at least one of the lens 10 and the image pickup device 30 The position of the face portion acquired by the face recognizing portion is set to a predetermined position from the image data acquired from the light incident on the image pickup device 30 after adjusting the position so that the user of the digital photographing device uses the digital photographing device A final still image of a desired composition can be obtained even when the user himself / herself is photographed. Of course, such a function can be useful when a user uses a digital photographing apparatus to photograph a person other than himself / herself. Particularly, in the zoom-out state, when the zoom-in state (moving from Wide to Tele end) or the telephoto lens is used, the position of the subject (face portion) is corrected by only a small movement of the lens 10 and / It can be said to be effective because it can be moved greatly.

The position adjustment unit adjusts the position of at least one of the lens 10 and the image pickup device 30 so that it can adjust only the position of the lens 100 and adjust the position of only the image pickup device 30, 3 is a perspective view schematically showing an example of a position adjusting section for adjusting the position of the image pickup device 30 in the digital photographing apparatus as shown in Fig. 2. Fig. to be.

3, the position adjustment unit 1 includes a base plate 2, a slider 3, and an imaging element base 4. [ An imaging element (not shown) is provided inside the imaging element base 4. Examples of such an imaging element include a charge coupled device (CCD) or a complementary metal oxidized semiconductor (CMOS).

The imaging element base 4 is provided on the slider 3 and can move in the Y axis direction with respect to the slider 3. [ The slider 3 is provided on the base plate 2 and can move in the X-axis direction with respect to the base plate 2. [ Therefore, the imaging device can move in the X-axis and Y-axis directions with respect to the base plate 2. Although not shown in the drawing, the slider 3 and the imaging element base 4 may be driven in the X-axis and Y-axis directions respectively by separate driving means such as a piezo electric actuator or the like. A spring 5 is provided on the projection 3a of the slider and the projection 2a of the base plate so that the slider 3 and the imaging element base 4 are separated from the base plate 2 in the Z- You do not have to. Of course, in addition to the spring 5, a similar function may be performed using a magnet or the like, and various modifications are possible.

On the other hand, the position adjusting unit 1 adjusts the position of the lens and / or the image pickup device so that the position of the face part in the final still image is a predetermined position. In addition to the function, at least one of the lens and the image pickup device It is also possible to have an anti-shake function for preventing the image sharpness from being degraded by the camera shake by adjusting the position.

For example, the base plate 2 of the position adjusting section 1 shown in Fig. 3 may be mounted on the digital photographing apparatus and moved together with the digital photographing apparatus. If the digital photographing apparatus is shaken in the X-axis or Y-axis direction, the slider 3 or the image sensing element base 4 moves in the direction opposite to the digital photographing apparatus shake to compensate for this. The step of acquiring the information of the object through this can be performed in a state in which the image forming position of the subject in the image pickup device provided in the photographing apparatus is kept constant despite the movement of the digital photographing apparatus. Of course, in order to detect the shake of the digital photographing apparatus, a motion sensing unit such as a gyro sensor may be further provided. In addition, a motion sensing unit And a position sensing unit for calculating a positional shift amount of the device. Accordingly, even when the user of the digital photographing apparatus photographs himself / herself by using the digital photographing apparatus, it is possible to acquire the final still image of the desired composition, and also to prevent image quality deterioration due to camera shake.

4 is a flow chart schematically showing a control method of a digital photographing apparatus according to another embodiment of the present invention, specifically a control method of a digital photographing apparatus for acquiring data on an image from light incident on an image capturing element through a lens It is a chart. Referring to FIG. 4, a step (S1) of acquiring the position of the face portion from the image data obtained from the light incident on the image pickup device is performed. (S2) of determining whether or not the position of the acquired face portion matches the predetermined position, and if it does, immediately obtains the final image data (S4). If not, the position of at least one of the image pickup element and the lens (Step S3) so that the position of the face part from the image data acquired from the light incident on the image pickup device after the position adjustment is made to be the predetermined position after adjustment of the position, and then obtaining the final image data (step S4) . Of course, prior to step S1, the step of presetting the position of the face part in the image may be further performed. And a step (S3) of adjusting the position of at least one of the image pickup element and the lens so that the position of the face part from the image data obtained from the light incident on the image pickup element after the position adjustment becomes a predetermined position, It may be a variation of the anti-shake function. In this way, in the case of a digital photographing apparatus having an anti-shake function, the function of the digital photographing apparatus can be enlarged and / or changed without adding additional modules, so that the effect of the present invention can be achieved without increasing costs.

The program for causing the digital photographing apparatus to execute the control method of the digital photographing apparatus according to the embodiments and modifications thereof as described above can be stored in a recording medium. Here, the recording medium may be a storage medium 80 as shown in FIG. 2, a memory 60 as shown in FIG. 2, or a separate recording medium. The storage medium may be a storage medium such as a magnetic storage medium (e.g., ROM, floppy disk, hard disk, etc.) and an optical reading medium (e.g., CD-ROM, DVD (Digital Versatile Disc) . For example, the CPU 100 in FIG. 2 or a part thereof.

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 invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

FIG. 1A is a conceptual diagram schematically showing the photographing of the user himself / herself by using the digital photographing apparatus.

1B is an image obtained through photographing as shown in FIG. 1A.

2 is a block diagram schematically showing a digital photographing apparatus according to an embodiment of the present invention.

Fig. 3 is a perspective view schematically showing an example of a position adjusting section for adjusting the position of the image pickup device in the digital photographing apparatus as shown in Fig. 2;

4 is a flow chart schematically showing a control method of a digital photographing apparatus according to another embodiment of the present invention.

Description of the Related Art

10: lens 11:

20: Aperture 21: Aperture drive unit

30: Imaging element 31: Imaging element controller

40: A / D converter 50: digital signal processor

60: Memory 71: Storage /

70: Storage medium 81: Display control unit

80: display unit 100: CPU

200:

Claims (6)

lens; An image pickup element for obtaining data on an image from light incident through the lens; A face recognition unit for acquiring a position of a face part from image data acquired from light incident on the imaging element; A presetting unit for setting a position of a face part in an image to be photographed according to a user's selection; And The position of at least one of the lens and the image pickup element is adjusted so that the position of the face portion acquired by the face recognition section from the image data acquired from the light incident on the image pickup element after the position adjustment, And a position adjusting unit for adjusting the position of the face part. The method according to claim 1, Wherein the position adjustment section performs an image stabilization function for adjusting a position of at least one of the lens and the image pickup element so as to prevent degradation of image sharpness caused by camera shake. A control method of a digital photographing apparatus for acquiring data on an image from light incident on an image pickup element through a lens, Setting a position of a face part in an image to be photographed according to a user's selection; Obtaining a position of a face part from image data acquired from light incident on the imaging element; And And adjusting the position of at least one of the image pickup element and the lens so that the position of the face portion from the image data obtained from the light incident on the image pickup element after the position adjustment becomes the set position And a control unit for controlling the digital camera. delete The method of claim 3, Wherein the digital photographing apparatus has an image shake prevention function for adjusting the position of at least one of the lens and the image pickup element to prevent the image sharpness from being degraded due to camera shake, and the adjusting step uses the shake prevention function A method of controlling a digital photographing apparatus. A recording medium storing a program for executing the method according to claim 3 or claim 5.

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