JP2006215947A - Face image photographing method and device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a face image photographing method for determining whether a face of an object is covered with an obstacle or not in photographing the face of the object for taking a picture bearing the face in a good condition. <P>SOLUTION: This face image photographing method is provided with a photographing process for photographing the object, a face area extraction process for extracting a face area of the object inside a frame image of an image including a face image of the object photographed in the photographing process, a determination process for determining whether the face of the object is covered with an obstacle or not on the face image area extracted in the face image extraction process, and an image output process for outputting the frame image used for determination as the face image when it is determined that the face of the object is not covered with an obstacle in the determination process. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a face image capturing method and a face image capturing apparatus for capturing a photograph containing a face of a subject.

  For example, when taking a picture with the face of the person to be photographed in an unmanned photography box, the photograph was taken while looking at the monitor screen. However, in the case of image output (printing) of a face image such as blinking that is not suitable for the specification of the ID photo or the like, it is necessary to take a picture again.

  Therefore, recently, in order to solve such a problem, the face image of the subject is photographed, the eye position is extracted from the photographed face image, and the eye state is recognized based on the extracted eye position. However, a technique is disclosed in which it is determined whether or not the eyes are normally opened, and when it is determined that the eyes are not normally opened by this determination, photographing is automatically performed again (Patent Document 1).

The subject's desired facial condition in the second and subsequent frames without the need to store the prescribed number of images by determining the subject's eye opening / closing, mouth opening / closing, eyeglass reflection, etc. A technique is disclosed that can complete photographing at the point of time (Patent Document 2).
JP 2000-292853 A JP 2001-67459 A

  However, in this face image photographing method, the face of the photographed person is covered with the hand of the photographed person, the eyes are covered with bangs, and further covered with a part of the clothes of the photographed person. When covered with so-called obstacles, there is a problem that the judgment cannot be made, and in particular, it may not be suitable for identification face images and various license face images that need to satisfy predetermined prescribed conditions. .

  Therefore, the present invention has been made in view of the above problems, and an object of the present invention is to determine that the subject's face is not covered with an obstacle when photographing the subject's face. It is an object to provide a face image photographing method and a face image photographing device capable of photographing in a state of a simple face.

The above object can be achieved by any of the following means.
(Claim 1) A photographing step for photographing a subject and a face region of the subject existing in a frame image of an image including the face image of the subject photographed by the photographing step is extracted. And a determination step of determining whether or not the face state of the subject is not covered with an obstacle with respect to the face region extracted by the face region extraction step; An image output step of outputting the frame image used for the determination as a face image when the determination step determines that the face state of the subject is not covered by an obstacle. A featured face image capturing method.
(Claim 2) Based on a comparison between the skin color area in the face area extracted by the face area extraction step and a predetermined reference skin color area, the determination step is performed when the face state of the subject is an obstacle The face image capturing method according to claim 1, wherein it is determined whether or not the image is uncovered.
(Claim 3) Whether or not the determination step is a state in which the face state of the subject is not covered with an obstacle in units of face parts in the face region extracted by the face region extraction step. The face image capturing method according to claim 1, wherein:
(Claim 4) When it is determined by the determination step that the face state of the subject is covered with an obstacle, a display step for displaying the determination content is provided. Item 4. The face image photographing method according to Item 1, 2 or 3.
(Claim 5) Extracting the face area of the subject existing in the frame image from the photographing means for photographing the subject and the image including the face image of the subject photographed by the photographing means A face area extracting means for determining whether or not the face area extracted by the face area extracting means is a state in which the face of the subject is not covered with an obstacle, An image output means for outputting the frame image used for the determination as a face image when the determination means determines that the face state of the subject is not covered by an obstacle. A featured face image photographing device.
(Claim 6) The determination means, based on a comparison between the skin color area in the face area extracted by the face area extraction means and a predetermined reference skin color area, the face state of the subject is an obstacle. 6. The face image capturing apparatus according to claim 5, wherein it is determined whether or not the cover is not covered.
(7) The face image photographing device according to (6), wherein the determination means performs comparison using a reference skin color region that most closely matches a skin color region extracted from a plurality of reference skin color regions.
(Claim 8) Whether the determination unit is a state in which the face state of the person to be photographed is not covered with an obstacle in units of face parts in the face region extracted by the face region extraction unit The face image photographing device according to claim 5, wherein:
(Claim 9) The face image photographing apparatus according to claim 8, wherein the part unit is at least one of an eye, a mouth and a nostril.
(10) The obstacle is at least one of a subject's hand, a bangs covering the subject's eyes, a mask attached by the subject, and clothes of the subject. The face image photographing device according to any one of claims 5 to 8.
(11) When the determination means determines that the face state of the subject is covered with an obstacle, the determination means includes a display means for displaying the determination contents. Item 11. The face image photographing device according to any one of Items 5 to 10.
(Claim 12) The face image photographing apparatus according to claim 11, wherein the display means displays a position of a face area covered with an obstacle.

  The above object can be achieved by any of the following means.

  According to the first and fifth aspects of the present invention, photographing is performed on the subject, and the face region of the subject existing in the frame image is extracted and extracted from the photographed frame image. It is determined whether or not the face state of the photographed person is not covered with an obstacle with respect to the face area thus determined, and the face state of the photographed person is not covered with the obstacle. When the determination is made, the frame image used for the determination is output as a face image, so that a good face image in which the face of the photographed person is not covered with so-called obstacles such as hands, bangs, clothes, etc. It became possible to shoot including.

  According to the second aspect of the present invention, based on the comparison between the skin color area in the face area extracted by the face area extraction step and the predetermined reference skin color area, the face state of the subject is an obstacle. Since it is determined whether or not it is in an uncovered state, it is possible to easily and reliably determine whether or not the face of the subject is covered with an obstacle.

  According to the third aspect of the present invention, whether or not the face state of the subject is not covered with an obstacle in units of faces in the face area extracted by the face area extraction step. Therefore, it is possible to easily and reliably determine whether or not the face of the subject is covered with an obstacle.

  According to the fourth aspect of the present invention, when it is determined in the determination step that the face of the subject is covered with an obstacle, the determination content is displayed. I came to understand the contents.

  According to the sixth aspect of the present invention, the determination means is based on a comparison between the skin color area in the face area extracted by the face area extraction means and a predetermined reference skin color area, and the state of the face of the subject It is possible to determine whether or not the face of the subject is covered with an obstacle in a simple and reliable manner.

  According to the seventh aspect of the present invention, the determination means uses the reference skin color area that most closely matches the skin color area extracted from the plurality of reference skin color areas, so that the face of the subject can be obstructed easily and reliably. It is now possible to determine whether or not it is covered with.

  According to the invention described in claim 8, the determination means is a unit of face in the face area extracted by the face area extraction means, and the face state of the subject is not covered with an obstacle. Since it is determined whether or not there is, it is possible to easily and reliably determine whether or not the face of the subject is covered with an obstacle.

  According to the ninth aspect of the invention, since the site unit is at least one of the eyes, mouth, and nostrils, it is simple and sure that at least one of the eyes, mouth, and nostrils of the subject is an obstacle. It is now possible to determine whether or not it is covered with.

  According to the invention described in claim 10, the obstacle is at least one of the subject's hand, the bangs covering the subject's eyes, the mask attached to the subject, and the subject's clothes. Therefore, it is possible to determine whether or not at least one of the subject, the bangs covering the hands, eyes, mask, and clothes is covered with an obstacle.

  According to the eleventh and twelfth aspects of the present invention, when it is determined that the face state of the subject is covered with an obstacle, the determination content is displayed. The judgment contents are now shown on the display.

  First, a schematic configuration of the face image capturing apparatus common to the first and second embodiments will be described. FIG. 1 shows a schematic configuration of a face image photographing apparatus according to the present embodiment.

  This unmanned shooting box 1 which is a face image photographing device includes a chair 5 on which a person to be photographed sits when photographing, a background plate 6 which becomes a background of the person to be photographed at the time of photographing, and an operation unit for performing various operations at the time of photographing. 8. Illuminator 2 for illuminating the subject P, photographing means 3 for photographing at least a face image of the subject P, face region extracting means 9 for extracting a face region, and the face state of the subject is an obstacle. The determination means 10 for determining whether or not the face is covered, the display means 4 for displaying when the face of the subject is covered with an obstacle, and the face image of the subject is output (printed). It consists of image output means 7 and the like.

  Here, the obstacle means all obstacles covering the subject's face area, for example, the subject's hand, the bangs covering the subject's eyes, a mask, and a part of the subject's clothes. An earring or a hat worn by the subject to cover the face area.

  FIG. 2 is a block diagram showing a schematic configuration of the control relationship of the face image photographing apparatus shown in FIG. This face image photographing device includes a photographing unit 16 as photographing means for photographing a subject, an image memory 17 that stores an input image, and a face that includes an image including a face image of the subject in a frame image. A face image extracting unit 18 as a face area extracting unit for extracting a region; a determining unit 19 as a determining unit for determining whether or not the face state of the subject is covered by an obstacle; and the face of the subject Display unit 21 as display means for displaying the determination content when it is determined that the state is covered with an obstacle, and image output means for outputting (printing) the face image of the subject The image output unit 20 is configured.

(Embodiment 1)
Hereinafter, a face image capturing method and a face image capturing apparatus according to Embodiment 1 of the present invention will be described with reference to the drawings.

  The unmanned shooting box, which is a face image shooting device according to this embodiment, indicates that when shooting the face of the subject, the face of the subject is not covered with so-called obstacles such as hands, bangs, and clothes. This is a device that can be confirmed and photographed with a good face condition.

  Next, the flow of main operations in the face image photographing apparatus will be described mainly with reference to the control flowchart of the face image photographing apparatus in FIG. A brief explanation will be given first.

  First, in step S11, a face image including the face of the subject is photographed by the photographing unit 16 (imaging process). In step S 12, the image of the subject digitized from the image input acquired by the imaging unit 16 is stored in the image memory 17. Next, in step S13, a face image of the person to be photographed present in the image input by the face area extraction unit 18 is extracted (face area extraction step). Next, in step S14, the skin color area of the photographed person is extracted from the face area, and in step S15, the one that most closely matches the skin color area of the photographed person is selected from a plurality of predetermined reference skin color areas. In step S16, the skin color area of the subject is compared with the selected reference skin color area, and whether the face of the subject is covered with an obstacle such as a hand or bangs. The determination means determines whether or not (determination step). Next, when the subject's face is covered with an obstacle in step S17, a warning is displayed on the display unit 21 (display process). In step S18, when the face state of the subject is not covered with an obstacle, the image output unit 20 outputs a face image including the face of the subject (image output step). The above is a brief description of the operation flow in the face image photographing apparatus.

  Next, each content from step S11 to step S18 described in FIG. 3 will be described in detail with reference to FIGS. FIG. 4 is an explanatory diagram of a method for extracting whether or not the face state of the photographed person is covered with an obstacle, and FIG. 5 relates to a warning display when the face state of the photographed person is covered with an obstacle. It is explanatory drawing.

  The face image capturing process in step S11 will be described. The subject including the face is photographed by the photographing means 3 (FIG. 2, photographing unit 16) shown in FIG. FIG. 4A shows a face image.

  The image input process in step S12 will be described. Image data including the face image of the photographed person P is digitized and stored in the image memory 17 (FIG. 2).

  The face area extraction process in step S13 will be described. In the face area extracting means 9 (FIG. 2, face area extracting unit 18) shown in FIG. 1, the upper and lower sides of the face are determined as areas located near the chin from the forehead and the left and right sides near the ears at both ends. The face area of the photographer is extracted. The face area can be extracted by various methods known in the art. One example will be described. Create an average image using multiple images in advance, evaluate various images using a face search dictionary, and collect images as non-face dictionaries if it is determined that a face is not a face in an area similar to the face dictionary In addition, in order to eliminate the influence of the size of the face on the input image, multiple enlarged and reduced images are created, and for example, a composite similarity method or a template matching method is used for each image. Then, the face area is searched, and the face area is evaluated with high similarity to the face dictionary and low similarity to the non-face dictionary, but the face image area is obtained. However, the present invention is not limited to this. FIG. 4B shows an example of the extracted face area F1.

  The skin color area extraction in step S14 will be described (determination step). In the determination means 10 (FIG. 2, determination unit 19) shown in FIG. 1, a region where the skin color of the subject exists in the extracted face region F1 is extracted. The skin color area is extracted by various methods. Here, an example of the simple region expansion method will be described. The simple region expansion method is an image processing method for extracting an image region by expanding adjacent regions with pixels adjacent to each other whose data difference between pixels is equal to or less than a threshold value belonging to the same image region. That is, starting from an initial pixel that meets a specified specific condition, if the data difference between adjacent pixels is less than or equal to a threshold value, the adjacent pixel and the initial pixel belong to the same pixel. In addition, the pixel adjacent to the pixel that belongs to the same image area is also determined by the same determination means, and the image area is extracted by gradually expanding the same area starting from the initial pixel. How to do it.

  Next, another simple area expansion method that has been further developed and ensured will be described. First, a person to be photographed is photographed with a camera to acquire face image data, and an edge of the face image data is extracted. Next, a low frequency image of the face image data is created. Here, simple area expansion is started from the initial pixel, and simple area expansion for extracting a skin color area is performed while sequentially comparing image signal differences between adjacent pixels. Next, when the image signal of the image signal of the adjacent pixel satisfies the extraction condition, it is further determined whether or not the adjacent pixel is an edge. If the adjacent pixel is not an edge, the adjacent pixel Include in the skin color area. Here, for the pixels included in the flesh color region, information indicating the respective positions (information for identifying the pixels) is sequentially stored in the data storage memory. Finally, when the adjacent pixel reaches a portion determined to be an edge, the skin color region extraction processing using simple region expansion is terminated. In addition, eyes, mouths, etc. can be detected as a closed region of the skin color region. FIG. 4C shows a skin color area F2 extracted from the face area.

  The selection of the reference skin color region in step S15 will be described (determination step). A plurality of reference skin color areas as a reference are prepared in advance, and the skin color area F2 (see FIG. 4 (c)) of the subject to be obtained first matches the outer frame of the skin color area most closely. A reference skin color region S2 is selected (see FIG. 4D).

  The determination of whether the face in step S16 is not covered with an obstacle will be described (determination step). The skin color area F2 of the person to be photographed is compared with the selected reference skin color area S2, and the part of the skin color area of the person to be photographed covered with the hand W that is an obstacle is extracted. An example of the extraction method will be described. The skin color area of the subject and the reference skin color area are overlapped by image processing to extract a non-overlapping portion. FIG. 4 (e) shows the extracted obstacle, and the shaded portion W3 is a missing portion covered with an obstacle hand. As another method, the area of the skin color area F2 (FIG. 4C) of the subject can be obtained by comparing the area of the selected reference skin color area S2 (FIG. 4D).

  The warning display process in step S17 will be described. In the display means 4 (FIG. 2, display unit 21) shown in FIG. 1, when the mouth is covered with the hand W which is an obstacle in the face area, the warning content as shown in FIG. 5 is displayed.

  The image output process in step S18 will be described. In the image output means 7 (FIG. 2, image output unit 20) shown in FIG. 1, it is confirmed that the face area is not covered with an obstacle, and the image is output.

  As described above, according to the above-described embodiment, when a face image photographing device or the like performs photographing for a subject, it is preferable to automatically determine whether there is an obstacle on the subject's face. A simple face image can be created. If there is an obstacle, a warning image is displayed and the image is taken after the obstacle is removed, so that a good face image can be created.

  In the embodiment, the case where the subject covers the mouth with the hand has been described. However, the present invention is not limited to this, and the same applies to the case where the eye is covered with bangs, for example. is there.

(Embodiment 2)
Hereinafter, a face image capturing method and a face image capturing apparatus according to Embodiment 2 of the present invention will be described with reference to the drawings.

  The face image photographing device according to the embodiment is another device capable of photographing in a good face state by judging whether the subject's face is covered with an obstacle when photographing the subject's face. It is.

  Next, the flow of operations in the face image photographing apparatus will be described with reference to FIGS. 1 and 2 described above, mainly referring to the other control flowchart of the face image photographing apparatus in FIG. A brief explanation will be given first.

  First, in step S21, a face image including the face of the subject is photographed by the photographing unit 16 (imaging process). In step S 22, the image of the subject digitized from the image input acquired by the imaging unit 16 is stored in the image memory 17. Next, in step S23, the face image of the person to be photographed existing in the image input by the face area extracting unit 18 is extracted (face area extracting step).

  Next, in step S24a, an eye area that is a part of the face of the subject is extracted from the face area extracted by the face area extraction unit. In step S24b, the eye area of the subject is obstruction. It is determined by a determination means whether it is in the state which is not covered with (determination process). If it is not covered, the process proceeds to step S25b. If it is covered, a warning is displayed in step S27 (display process).

  Next, in step S25a, a nostril region, which is a part of the face of the subject, is extracted from the face region extracted by the face region extraction unit. In step S25b, the nostril region is covered with an obstacle. It is determined by a determination means whether or not there is no state (determination step). If the subject's nostril region is not covered with an obstacle, the process proceeds to step S25c, and if it is covered, a warning is displayed in step S27 (display process).

  Next, in step S26a, a mouth area, which is a part of the face of the photographed person, is extracted from the face area extracted by the face area extracting unit. In step S26b, the mouth area of the photographed person is an obstacle. It is determined by a determination means whether or not the state is not covered (determination step). If it is not covered, the process proceeds to step S27, and if it is covered, a warning is displayed in step S27 (display process). Finally, in step S28, a face image including the face of the subject is output by the image output unit 20 (image output step).

  Next, the contents from step S21 to step S27 described in FIG. 6 will be described in detail with reference to FIG. 1, FIG. 2, and FIGS. 7 is an explanatory diagram of an extraction method for determining whether the subject's eyes are covered with an obstacle, FIG. 8 is an explanatory diagram of an extraction method for determining whether the subject's nostril is covered with an obstacle, FIG. FIG. 5 is an explanatory diagram of a method for extracting whether or not the mouth of the subject is covered with an obstacle.

  Steps S21 to S23 are the same as steps S11 to S13 described above, and a description thereof will be omitted.

  The eye region extraction process in step S24a will be described. In FIG. 7A, an eye region F4a is extracted from the face contour F3 of the face region F1 of the subject. For example, the relative position of the eye region F4a with respect to the face contour F3 is determined in advance and obtained by image processing.

  The determination of whether or not the eye of step S24b is covered with an obstacle will be described (determination step). 7A and 7B, the case where the object is covered with bangs as an obstacle will be described. The skin color area F4b in the subject eye area F4a and the reference eye skin color area (reference eye area S4a) Compared with S4b (also simply referred to as a skin color region), a portion W4 in which the eye region of the subject is covered with an obstacle is detected. Specifically, the skin color area F4b of the subject eye area and the skin color area S4b of the reference eye area are overlapped by image processing, and the non-overlapping portion W4 is extracted. As another method, the area of the subject skin color area F4b and the area of the reference skin color area S4b can be compared and extracted based on whether or not there is a difference.

  The nostril region extracting step in step S25a will be described. In FIG. 8A, the nostril region F5a is extracted from the face contour F3 of the face region F1 of the subject. For example, the relative position of the nostril region F5a with respect to the face contour F3 is determined in advance and obtained by image processing.

  The determination of whether the nostril of step S25b is not covered with an obstacle will be described (determination step). 8A and 8B, the case where the subject is covered with an obstacle will be described. The skin color region F5b in the nostril region F5a of the subject and the reference nostril skin color region (simply the skin color) of the reference nostril region S5a. Compared with S5b), a portion W5 where the nostril region of the subject is covered with an obstacle is detected. Specifically, the skin color area F5b of the subject's nostril area and the reference nostril skin color area S5b are overlapped by image processing and extracted by extracting a non-overlapping portion W5. As another method, the area of the skin color region F5b of the subject can be compared with the area of the reference skin color region S5b, and the difference can be detected.

  The mouth region extraction process in step S26a will be described. In FIG. 9A, the mouth area F6a is extracted from the face contour F3 of the face area F1 of the subject. For example, the relative position of the mouth area F6a with respect to the face outline F3 is determined in advance and obtained by image processing.

  Determination of whether the mouth of step S26b is not covered with an obstacle will be described (determination step). 9A and 9B, the case where the subject is covered with an obstacle will be described. The skin color area F6b in the subject mouth area F6a and the reference mouth skin color area (simply the skin color) of the reference mouth area S6a. Compared with S6b), a portion W6 where the mouth area of the subject is covered with an obstacle is detected. Specifically, the skin color area F6b of the mouth area of the subject and the skin color area S6b of the reference mouth area are overlapped by image processing, and the non-overlapping portion W6 is extracted. As another method, the area of the skin color region F6b of the subject can be compared with the area of the reference skin color region S6b, and the difference can be detected.

  The warning display process in step S27 will be described. In the display means 4 shown in FIG. 1 (FIG. 2, display unit 21), the display is performed when the facial part (eyes, nostril, mouth) is covered with an obstacle as determined in steps S24b, S25b, and S26b. An example of the display is shown in FIG. G1 in FIG. 5 is a display screen.

  The image output process in step S28 will be described. In the image output means 7 (FIG. 2, image output unit 20) shown in FIG. 1, it is confirmed that the face area is not covered with an obstacle, and the image is output.

  As described above, according to the above-described embodiment, when a face image photographing device or the like performs photographing for a subject, it is preferable to automatically determine whether there is an obstacle on the subject's face. A simple face image can be created. Also, if there are obstacles. A warning is displayed, and a good face image can be created by shooting after the obstacle is removed.

It is a figure which shows the structure of the outline of the face image imaging device concerning this Embodiment. It is a block diagram which shows schematic structure of the control relationship of the face image imaging device shown in FIG. It is a control flowchart of a face image photographing device. It is explanatory drawing of the method of extracting whether the state of a to-be-photographed person's face is covered with the obstruction. It is explanatory drawing regarding a warning display in case a to-be-photographed person's face is covered with the obstruction. It is another control flowchart of a face image photographing device. It is explanatory drawing of the extraction method of whether a to-be-photographed person's eye is covered with the obstruction. It is explanatory drawing of the extraction method of whether a to-be-photographed person's nostril is covered with the obstruction. It is explanatory drawing of the extraction method of whether a to-be-photographed person's mouth is covered with the obstruction.

Explanation of symbols

DESCRIPTION OF SYMBOLS 3 Image | photographing means 4 Display means 7 Image output means 9 Face area extraction means 10 Judgment means 16 Imaging | photography part (imaging process)
17 Image memory 18 Face area extraction unit (face area extraction process)
19 Judgment part (judgment process)
20 Image output unit (image output process)
21 Display section (display process)
P Subject F1 Face area F2 Skin color area F4a Eye area F5a Nostril area F6a Mouth area W Obstacle

Claims (12)

A shooting process for shooting a subject,
A face area extracting step of extracting a face area of the subject existing in the frame image of the image including the face image of the subject photographed by the photographing step;
A determination step of determining whether or not the face state of the subject is not covered by an obstacle with respect to the face region extracted by the face region extraction step;
An image output step of outputting the frame image used for the determination as a face image when the determination step determines that the face state of the subject is not covered by an obstacle;
A face image photographing method characterized by comprising: The determination step is based on a comparison between a skin color region in the face region extracted by the face region extraction step and a predetermined reference skin color region, and the state of the face of the subject is not covered with an obstacle The face image capturing method according to claim 1, wherein it is determined whether or not. The determination step determines whether the face state of the subject is not covered by an obstacle in units of faces in the face region extracted by the face region extraction step. The face image photographing method according to claim 1, wherein: The display step of displaying the determination content when the determination step determines that the face state of the subject is covered with an obstacle. 4. The face image photographing method according to 3. Photographing means for photographing a subject,
A face area extracting means for extracting a face area of the photographed person existing in a frame image of the image including the face image of the photographed person photographed by the photographing means;
A determination unit that determines whether or not the face state of the subject is not covered by an obstacle with respect to the face region extracted by the face region extraction unit;
An image output means for outputting the frame image used for the determination as a face image when the determination means determines that the face state of the subject is not covered by an obstacle;
A face image photographing apparatus comprising: The determination means is based on a comparison between a skin color area in the face area extracted by the face area extraction means and a predetermined reference skin color area, and the face state of the subject is not covered with an obstacle 6. The face image photographing device according to claim 5, wherein it is determined whether or not. The face image capturing apparatus according to claim 6, wherein the determination unit performs comparison using a reference skin color region that most closely matches a skin color region extracted from a plurality of reference skin color regions. The determination means determines whether the face state of the subject is not covered by an obstacle in units of faces in the face area extracted by the face area extraction means. The face image photographing device according to claim 5, wherein The face image photographing apparatus according to claim 8, wherein the part unit is at least one of an eye, a mouth, and a nostril. 6. The obstacle according to claim 5, wherein the obstacle is at least one of a photographer's hand, a bangs covering the photographer's eyes, a mask attached by the photographer, and a photographer's clothes. 9. The face image photographing device according to any one of items 8. 11. The display device according to claim 5, further comprising: a display unit configured to display the determination content when the determination unit determines that the face of the subject is covered with an obstacle. The face image photographing device according to any one of claims. The face image photographing apparatus according to claim 11, wherein the display unit displays a position of a face area covered with an obstacle.

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