JP5208719B2 - Imaging device, display device, and imaging method - Google Patents

Description

  The present invention relates to a technique for accurately acquiring data such as a human face under appropriate illumination.

  When shooting a face with the imaging device while checking the position of your face on the display screen in face authentication systems or taking ID photos, etc. There was a case where unevenness of thickness occurred. In addition, when the subject uses glasses, there is a case where light is reflected on the glasses due to illumination around the shooting location.

As a related technology to deal with the above situation, when face authentication, lighting devices are installed on the top, bottom, left and right of the periphery of the scanning panel, and the subject is projected by emitting light in a specific pattern according to the surrounding environment. A technique that can be improved has been proposed (see, for example, Patent Document 1).
Japanese Patent Laid-Open No. 2005-165943

However, in the related art described above, a separate illumination mechanism is required around the display screen in order to eliminate unevenness of brightness due to illumination and reflection of glasses, and the apparatus itself has become a large scale.
Further, in order to change the brightness of the illumination and the light emission pattern according to the environment, a mechanism for performing the control separately is necessary, and there are problems such as complicated control and high cost.

  The present invention has been made in order to solve the above-described problems, and achieves space saving and the like by eliminating the need for a dedicated illumination mechanism and acquiring face data and the like in which reflection of glasses is suppressed. An object is to provide a device, a display device, and an imaging method.

An image pickup apparatus according to the present invention includes a control unit that controls the own apparatus;
Display means for displaying a display object;
An imaging apparatus comprising: a camera that captures an imaging target wearing spectacles, wherein the display unit has both an illumination function and a display function, a display unit that displays the imaging target wearing spectacles, and an illumination that illuminates the imaging target Function as a part,
According to the control of the control unit, in order to acquire clear and captured image data in which the reflection of the glasses is suppressed, a part functioning as a display unit and a part functioning as an illumination unit of the display unit are determined. To do.

Further, the display device of the present invention has both an illumination function and a display function, and functions as a display unit that displays an imaging target wearing spectacles and an illumination unit that illuminates the imaging target,
In order to acquire clear and captured image data in which the reflection of the glasses is suppressed, a part that functions as a display unit and a part that functions as an illumination unit are controlled separately.

Further, the imaging method of the present invention includes a control means for controlling the device itself;
Display means for displaying a display object;
A camera for taking an image of an object wearing glasses, and
The display means has both an illumination function and a display function, and is an imaging method in a display unit that displays an imaging target wearing spectacles and an imaging device that functions as an illumination unit that illuminates the imaging target,
Determining the part functioning as a display part and the part functioning as an illuminating part of the display means in order for the control means to acquire image data that is clear and suppresses reflection of glasses;
In response to the determination, the illumination unit illuminates the imaging target.

  According to the present invention, it is possible to obtain space data and the like by eliminating the need for a dedicated illumination mechanism, and to acquire face data and the like in which reflection of glasses is suppressed.

  Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings. A face authentication system 1 as an imaging device in the present embodiment shown in FIG. 1 includes a control device 10, a display unit 20, a combined illumination / display unit 30, and a camera 40.

  The control device 10 is an information processing device including a control unit including a CPU.

  The display unit 20 includes a liquid crystal display or the like. The illumination / display combined unit 30 also includes a panel such as a liquid crystal display. That is, the display unit 20 and the combined illumination / display unit 30 may be configured as a continuous display unit. That is, surface light may be emitted from the peripheral portion of the display panel or the like as illumination.

  The camera 40 includes an imaging mechanism such as a lens. It may also have a human body sensor mechanism.

  FIG. 2 is a functional block diagram of the face authentication system 1 in the present embodiment.

  The face authentication system 1 includes a display unit 101, an illumination unit 102, a camera unit 103, a control unit 104, a human body sensor unit 105, and a face authentication processing unit 106.

  The display unit 101 has a function of displaying an imaging target such as a face portion of the subject and displaying authentication information, and may be realized by the display unit 20 of the control device 10.

  The illumination unit 102 has a function of illuminating an imaging target such as a face portion of the subject, and may be realized by the illumination / display combination unit 30 of the control device 10.

  The camera unit 103 has a function of shooting an imaging target such as a face portion of the subject and may be realized by the camera 40.

  The control unit 104 has a function of determining which part of the illumination unit 102 emits light as illumination and the like, and is responsible for the processing operation of the entire system, and may be realized by the CPU of the control device 10.

  The human body detection sensor unit 105 has a trigger function such as detecting that the subject has approached the face authentication system 1 and activating the display function, and may be realized by the camera 40.

  The face authentication processing unit 106 has a function of aligning faces, recognizing face data, etc., and performing face authentication by collating with a predetermined DB or the like, and may be realized by the CPU of the control device 10. .

  Here, with reference to FIG. 3 and FIG. 4, the relationship between the display unit 20 and the illumination / display combined unit 30 of the face authentication system 1 in the present embodiment will be described.

  As shown in FIG. 3, there are a portion that emits light as illumination and a portion that does not emit light in the illumination / display combined unit 30. The camera 40 is provided above the display unit 20 and the illumination / display unit 30.

  FIG. 4 shows proof results of the reflection state of the illumination of the eyeglasses of the imaging data and the sharpness of the face to be imaged in each case where the light emitting part of the illumination / display combination unit 30 is different. Although there are six patterns of upper and lower sets, the upper part shows imaging data and the lower part shows a light emission pattern. The camera 40 is assumed to be provided above the display unit 20 and the illumination / display unit 30. In the present embodiment, the concept of glasses includes a wide range of glasses having a property of being reflected by illumination such as sunglasses.

  The (1) case without illumination in FIG. 4 does not cause all of the illumination / display unit 30 to emit light. In this case, there is no reflection of the glasses, but the entire face is dark and unclear and the recognition rate is lowered.

  The (2) white case in FIG. 4 causes all of the illumination / display unit 30 to emit light. In this case, the reflection of the glasses is extremely strong and the recognition rate is reduced.

  In the case of (3) center ¼ black in FIG. 4, the other parts of the illumination / display combined unit 30 emit light so that ¼ of the center part becomes black. In this case, the reflection of the glasses is still strong and the recognition rate decreases.

  In the case of black from (4) center ¼ to the upper end in FIG. 4, the other portions are caused to emit light so as to extend the blackened central portion of the above (3) center ¼ black case to the upper end. In this case, although the reflection of the glasses is improved compared with the case of (3) center 1/4 black, it is still strong and the recognition rate is lowered.

  The (5) center 9/16 black case in FIG. 4 causes the other portions of the illumination / display combined unit 30 to emit light so that 9/16 in the center portion becomes black. In this case, although the reflection of the glasses is improved as compared with the case of (3) center 1/4 black, the reflection from the illumination from the upper end portion remains and the recognition rate is lowered.

  In FIG. 4, (6) the black case from the center 9/16 to the upper end emits light so that the blackened central portion of the above (5) center 9/16 black case extends to the upper end. In this case, the reflection of the glasses is most improved, the sharpness of the entire face is maintained, and the degradation of the recognition rate is minimized.

  From the above, it can be seen that the black case is most preferable from (6) center 9/16 to the upper end in FIG. That is, when wearing spectacles, it is possible to suppress a decrease in the authentication rate due to the reflection of the spectacles by darkening the installation direction of the central portion and the camera 40.

4 assumes that the camera 40 is provided above the display unit 20 and the illumination / display unit 30. In FIG. 5, three sides where the camera 40 is not installed are used as illumination. The modification which light-emits is shown. The ratio of black is the same from the center 9/16 to each end.
That is, when the camera 40 is provided at the lower part of the display unit 20 and the illumination / display unit 30, the other part emits light so as to extend the blackened central part to the lower end.
In addition, when the camera 40 is provided in the right part of the display unit 20 and the illumination / display unit 30, the other part emits light so that the blackened central part extends to the right end.
When the camera 40 is provided on the left part of the display unit 20 and the illumination / display unit 30, the other part emits light so as to extend the blackened central part to the left end.

  Hereinafter, the operation of the present embodiment will be described in detail with reference to the drawings. FIG. 6 is a flowchart showing the operation of face authentication processing by the face authentication system 1 according to the present embodiment.

  First, the human body sensor unit 105 detects that the subject has approached the face authentication system 1 (step S601). In the following, it is assumed that the subject is wearing glasses.

  Then, the display unit 101 emits light as a display area, and the illumination unit 102 emits light as an illumination area (step S602).

  The face authentication processing unit 106 displays a face alignment message for face authentication on the display unit 101, and performs face alignment (step S603). The subject may perform alignment of his / her face displayed on the display unit 101 by a known predetermined operation.

The control unit 104 determines which part of the illumination unit 102 emits light as illumination according to the installation position of the camera 40, and the illumination unit 102 emits the corresponding part (step S604). That is, as shown in FIG. 5, three sides where the camera 40 is not installed are emitted as illumination. In FIG. 4 (6), a portion to emit light is determined so as to have a black ratio from the center 9/16 to each end, which corresponds to a black case from the center 9/16 to the upper end.
Note that even if the position where the camera 40 is installed is stored in advance as data, the control unit 104 may perform processing for detecting the installation position of the camera 40 each time shooting is performed.

  The camera unit 103 captures an imaging target such as a face portion of the subject (step S605).

  The face authentication processing unit 106 performs face authentication by collating with a predetermined DB or the like (step S606).

  In the present embodiment described above, by utilizing the characteristics as a display mechanism of the conventional face display screen, the peripheral portion is used as surface emitting illumination, thereby eliminating the need for a dedicated illumination mechanism and saving the system space. It is possible to acquire face data and the like with reduced reflection and realize effective face authentication by improving the authentication rate.

  In step S604, the presence / absence of spectacles is determined. When the spectacles are not worn, the peripheral portion emits light as illumination as in (3) and (5) of FIG. Data can be acquired.

  Each of the above-described embodiments is a preferred embodiment of the present invention, and various modifications can be made without departing from the scope of the present invention. For example, control for appropriately changing the luminance of the illumination unit 102 may be performed. In addition, it is also within the scope of the present invention that the functions of each device are realized by other devices collectively or the functions are distributed by additional devices.

It is a figure which shows the system configuration | structure which concerns on embodiment of this invention. It is a functional block diagram concerning an embodiment of the invention. It is a figure which shows the light emission pattern which concerns on embodiment of this invention. It is a figure which compares the light emission pattern which concerns on embodiment of this invention. It is a figure which shows an example of the light emission pattern which concerns on embodiment of this invention. It is a figure explaining the example of the processing operation which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Face authentication system 10 Control apparatus 20 Display part 30 Illumination / display combined part 40 Camera

Claims (6)

Control means for controlling the device itself;
Display means for displaying a display object;
An imaging device comprising: a camera that captures an imaging target wearing glasses ;
The display means has both an illumination function and a display function, and functions as a display unit that displays an imaging target wearing spectacles and an illumination unit that illuminates the imaging target,
Wherein, in order to obtain the imaging data suppress reflection of crisp, glasses, determining a portion functioning as a display unit of the display means, a portion functioning as an illuminating unit,
In the display means, a portion other than a portion obtained by combining a portion of the center 9/16 with respect to the whole display means and a portion obtained by extending the portion to the end on the position where the camera is installed is the illumination. An imaging apparatus characterized by being determined to be a part that functions as a part . The control means, according to the installation position of the camera, the portion functioning as the display portion of the front Symbol display means, imaging of claim 1, wherein the determining the portion functioning as the lighting unit apparatus. A display device comprising display means for displaying a display object,
The display means has both an illumination function and a display function, and functions as a display unit that displays an imaging target wearing spectacles and an illumination unit that illuminates the imaging target,
To obtain the imaging data suppress reflection of crisp, glasses, and a portion which functions as a display unit of the display means, a portion functioning as an illuminating portion is controlled by distinguishing,
In the display means, a portion other than a portion obtained by combining a portion of the center 9/16 with respect to the whole display means and a portion obtained by extending the portion to the end on the position where the camera is installed is the illumination. A display device characterized by being determined as a portion that functions as a portion . The imaging object wearing the glasses according to the installation position of the camera for imaging, said a portion functioning as a display unit, characterized in that the portion functioning as the lighting unit is controlled to distinguish among the display means The display device according to claim 3 . A control unit that controls the device itself; a display unit that displays a display target; and a camera that shoots an imaging target wearing glasses. The display unit has both an illumination function and a display function, and the glasses are mounted An imaging method in an imaging device that functions as a display unit that displays an imaging target and an illumination unit that illuminates the imaging target,
A step wherein said control means, for determining for acquiring imaging data with reduced reflection of crisp, glasses, and a portion which functions as the display unit of the display means, a portion functioning as the illumination unit,
In response to the determination, the illumination unit illuminates the imaging target ;
Including
In the display means, a portion other than a portion obtained by combining a portion of the center 9/16 with respect to the whole display means and a portion obtained by extending the portion to the end on the position where the camera is installed is the illumination. An imaging method characterized by being determined as a part that functions as a part . Said control means, according to the installation position of the camera, said a portion functioning as a display unit, an imaging method according to claim 5, wherein the determining the portion functioning as the illumination unit of the display means .

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