JP7281904B2 - image capture device - Google Patents

Description

The present invention relates to an image capturing device for capturing an image of a given document placed at a given position.

In recent years, in services provided by financial institutions such as banks and various services provided by other business operators, it is possible for users to complete procedures such as subscription contracts and application for services by operating a terminal machine rather than face-to-face at a reception desk. It has become. During the procedure, the user is required to have the terminal machine read a prescribed document such as a form document or an identification card in which necessary items are entered.

When the user puts a prescribed document required for the procedure in a prescribed position on the terminal machine according to guidance from the terminal machine, the terminal machine takes an image of the document with a camera. The image is used for processing in the terminal machine or center server. For example, the image is used for user authentication, acquisition of necessary information, or stored as proof information.

In order to obtain an image in which the information displayed on the document can be identified, the terminal machine displays video guidance on the screen for the user as to how to place the document. For example, the type of document to be presented, the vertical direction of the document, whether it should be placed face up or face down, the front-back direction, whether the top of the document should be placed in the back or the front, where the document should be placed Guidance may be displayed on the screen to instruct the position in the front-rear direction and the left-right direction, such as whether to place it.
Patent Literature 1 discloses a device that displays an image in space via a prism array.

JP 2014-240960 A

When a prescribed document is placed at a prescribed position on the terminal machine and an image of the document is photographed, the user switches the line of sight and looks at both the guidance video and the placement surface of the document in order to obtain an appropriate appearance. The document will be placed as follows. The work while switching the line of sight may induce mistakes such as mistaking the type of document, the wrong side of the document, or placing the document in the wrong position.
One object of the present disclosure is to provide a technique that improves the convenience of the work of placing a given document at a given position and taking an image of the document.

An image capturing apparatus according to the present disclosure includes a mounting table on which a target document is mounted on a mounting surface made of a transmissive material that transmits light, an image display unit that outputs a predetermined guide image, and a guide image displayed by the image display unit. A spatial imaging unit that forms an image of light on an imaging plane in a space that intersects with the line of sight of a user viewing the placement surface, and an image of the target document placed on the placement surface are described above. and a photographing unit for photographing through the placement surface.

Since the guide image is displayed in the space within the field of view when the user looks at the placement surface on which the target document is placed, the convenience of the work of placing the target document at a predetermined position is improved.

It is a schematic block diagram of the window apparatus by 1st Embodiment. It is a figure which shows the periphery of the mounting table of the window apparatus by 1st Embodiment with a user's viewpoint position. FIG. 4 is a diagram for explaining an example of an image included in a guide video; FIG. FIG. 10 is a diagram for explaining another example of an image included in a guide video; FIG. It is a figure which shows the periphery of the mounting table of the window apparatus by 2nd Embodiment with a user's viewpoint position.

(First embodiment)
FIG. 1 is a schematic configuration diagram of a window device according to the first embodiment. The window device 1 exemplified here is a machine that enables the use of services by user's operation. The teller device 1 has a function of capturing an image of a predetermined document required for using the service. A document to be read by the counter device 1 is hereinafter referred to as a target document (11).

Referring to FIG. 1, the window device 1 has a mounting table 2, a spatial imager 3, a first image display 4, a processing device 5, a camera 6, and a second image display 7. As shown in FIG.

The mounting table 2 is a table on which the user places the target document 11 so that the counter device 1 can photograph it. The portion of the mounting table 2 on which the target document 11 is placed is a glass plate made of a transmissive material that transmits light so that an image can be taken from below. A portion of the mounting table 2 on which the target document 11 is placed is hereinafter referred to as a mounting surface. The user places the target document 11 on the mounting surface of the mounting table 2 with the surface of the side to be photographed by the counter device 1 facing downward.

The first image display 4 and the second image display 7 are image display units that display images for guiding the user to work under the control of the processing device 5 . In particular, the second image display 7 displays a guide image (guide image) for placing the target document 11 on the placing surface of the placing table 2 . In order to take a good image of the target document 11, it is necessary for the user to correctly place the target document 11 at a predetermined position on the placement surface. The guide image by the second image display 7 is imaged by the spatial image forming device 3, which will be described later, on a predetermined plane in the space that intersects with the line of sight of the user viewing the mounting surface. The plane on which this guide image is formed is hereinafter referred to as an imaging plane (10). The user can position the target document 11 while simultaneously viewing the placement surface of the placement table 2 and the guide image in the space without switching the line of sight, and as a result, the target document 11 can be easily placed in the correct position. be able to. The guide image displayed by the second image display 7 includes, for example, a marker indicating the placement position of the target document 11 . The user can position the target document 11 by relying on the marker. Details of the guide image according to the present embodiment will be described later.

The spatial image forming device 3 is a spatial image forming section that forms an image of the light of the guide image from the second image display device 7 on the image forming plane 10 , and has a reflector 8 and a polarization beam splitter 9 . The reflecting plate 8 is a plate-like optical member (reflecting member) having retroreflectivity for reflecting incident light in the incident direction. The polarizing beam splitter 9 is a plate-like optical member (beam splitting member) that partially reflects and partially transmits incident light. The polarizing beam splitter 9 is, for example, a half mirror. The polarizing beam splitter 9 reflects at least part of the light of the guide image from the second image display 7 toward the reflector 8, and the reflector 8 polarizes at least part of the light from the polarizing beam splitter 9. It reflects towards the beam splitter 9 , which transmits at least part of the light from the reflector 8 towards the imaging plane 10 . The reflecting plate 8 is provided with a through hole 8c penetrating between the reflecting surface 8a that reflects light and the back surface 8b so that the target document 11 on the mounting surface can be photographed by the camera 6. As shown in FIG.

Here, as an easy-to-understand configuration, an example in which the second image display device 7 and the spatial image forming device 3 are separate devices is shown, but the configuration is not limited to this. A unit in which the second image display 7 is part of the spatial image forming device 3, and the positional relationship between the image display surface of the second image display 7, the reflector 8, and the polarizing beam splitter 9 is fixed to a predetermined relationship. may be By installing the unit at a predetermined position on the housing at a predetermined angle, the window device 1 can be easily manufactured.

The camera 6 is a photographing unit that photographs an image of the target document 11 placed on the placing surface of the placing table 2 . The camera 6 is mounted on the rear surface 8b side of the reflector 8 when viewed from the mounting surface of the mounting table 2 and photographs the target document 11 through the through hole 8c of the reflector 8 .

The processing device 5 is a processing device that controls the first video display 4, the second video display 7, and the camera 6 and makes them cooperate with each other. The processing device 5 is, for example, a device that executes desired processing by executing a software program using a processor. For example, the processing device 5 causes the first image display 4 to display an image prompting the user to place the target document 11 on the placement surface of the placement table 2, and then places the target document 11 at a predetermined position on the placement surface. A second image display device 7 is caused to display a guide image for assisting placement of the document 11, and then the camera 6 is caused to photograph the target document 11.例文帳に追加While the user is working to place the object document 11 on the placing surface, the camera 6 is allowed to photograph an image, and the image displayed on the second image display device 7 for supporting the user's work is controlled according to the photographed image. You can decide. For example, text and/or images in the guide video may indicate how the target document 11 should be moved to place it in the correct position on the placement surface.

FIG. 2 is a diagram showing the surroundings of the mounting table of the teller device according to the first embodiment together with the viewpoint position of the user. FIG. 2 shows a user 12, a table 2, an object document 11, a spatial imaging device 3, a camera 6, a second video display 7, and an imaging plane 10. FIG. The polarizing beam splitter 9 of the spatial imager 3 is a plate-like member parallel to the mounting surface of the mounting table 2 . The second image display 7 is placed below the polarizing beam splitter 9 so as to face the user 12 from the front (left in FIG. 2) to the back (right in FIG. 2) and the bottom surface of the polarizing beam splitter 9. It has an obliquely arranged image display surface 7a. The reflector 8 is composed of a retroreflection member, is located below the polarizing beam splitter 9 and behind the image display surface 7a, and is arranged obliquely so as to face forward from the back and the lower surface of the polarizing beam splitter 9. It has a reflective surface 8a.

The camera 6 is provided on the rear surface 8b side of the reflector 8 so as to be able to photograph the target document 11 on the mounting surface 2a through the through hole 8c. The camera 6 is arranged on the other side of the imaging plane 10 and the polarizing beam splitter 9 as seen from the viewpoint position 12a of the user 12 . The imaging plane 10 is located between the mounting surface 2a and the viewpoint position 12a of the user 12. FIG. The imaging plane 10 is on the other side of the target document 11 as seen from the camera 6 . The guide image is displayed on the imaging plane 10 in a range where the light reflected by the reflector 8 passes through the polarizing beam splitter 9 and forms an image. Therefore, the guide image on the imaging plane 10 does not hinder the camera 6 from photographing the target document 11 .

According to this embodiment, when the user 12 looks at the placement surface 2a on which the target document 11 is placed, the guide image is displayed on the line of sight, so the work of placing the target document at a predetermined position is convenient. improves. For example, if a physical display device is arranged on the imaging plane 10 to display a guide image, the line of sight of the user viewing the target document 11 is obstructed, resulting in low convenience. can be considered. The user 12 can place the target document 11 by concentrating on the hand without moving the line of sight. It can be expected to reduce the risk of leaving a document that does not exist. Since it is easy to understand visually and improves operability, it can be expected to shorten the time required for work. Since the marker is not provided directly on the placement surface, it is possible to deal with a wide variety of target documents 11 by changing the video content of the guide video.

Further, since the window device 1 of the present embodiment is configured to reflect the light of the guide video image a plurality of times to form an image on the imaging plane 10, the second video display 7 displays the guide video on the imaging plane 10. 10 can be easily set at an appropriate position in relation to the viewpoint position of the user 12 .

1 and 2, the window device 1 of the present embodiment has the second image display unit 7 arranged on the lower front side of the mounting surface 2a to display the image on the image display surface. The imaging plane 10 can be configured on the line of sight of the user 12 while the 7a is directed to the back.

Further, in the teller device 1 of the present embodiment, the camera 6 shoots the lower surface of the target document 11 through the through hole 8c (transmissive portion) of the reflector 8. 11 required images can be taken.

In the window device 1 of the present embodiment, the imaging plane 10 is arranged at a position symmetrical to the image display surface 7a of the second image display 7 with respect to the plane formed by the polarizing beam splitter 9 . Therefore, by changing the arrangement and angle of the second image display device 4 according to the expected line-of-sight direction of the user 12, the imaging plane 10 can be configured at an appropriate position and angle.

FIG. 3 is a diagram for explaining an example of an image included in a guide video. An image included in the guide video will be referred to as a guide image. A guide image 20 in FIG. 3 includes a placement image 21 and a marker image 22 . Both the placement image 21 and the marker image 22 are images that support placement of the target document 11 in the correct position.

The placement image 21 is an image simulating a state in which the target document 11 is placed at the correct placement position on the placement table 2 . The processing device 5 causes the second video display 7 to display the placement image 21 so as to form an image on the imaging surface 10 at a position overlapping the target document 11 placed at the correct position. The user can place the target document 11 in the correct placement position by placing the target document 11 on the placement table 2 so as to overlap the placement image 21 .

The marker image 22 is an L-shaped image indicating the position of the corner of the target document 11 when the target document 11 is placed on the mounting table 2 at the correct placement position. The processing device 5 causes the second image display device 7 to display a marker image indicating the position of at least one corner of the target document 11 when the target document 11 is placed at the correct position on the mounting table 2, on the imaging surface 10, The target document 11 is displayed so as to be imaged at a position outside the target document 11 when the target document 11 is placed at the correct position on the mounting table 2 . The user can place the target document 11 in the correct placement position by placing the target document 11 on the placement table 2 using the marker image 22 as a mark.

A guide image is formed on the imaging plane 10 only in the range where the polarizing beam splitter 9 and the reflector 8 overlap when viewed from the viewpoint position 12a of the user 12 at the position shown in FIG. When the target document 11 is placed on the mounting table 2 , the light of the guide image is blocked by the target document 11 in the portion of the imaging plane 10 overlapping the target document 11 , and the light of the guide image is blocked by the target document 11 in the portion of the imaging plane 10 overlapping the target document 11 . , the guide image is not formed. However, by arranging the marker image 22 outside the target document 11 as described above, the marker image 22 can be displayed even when the target document 11 is placed, and the user 12 can confirm the correct placement position. can be done.

Note that FIG. 3 shows two marker images 22 respectively indicating two front corners of the target document 11 as an example. However, if the target document 11 is rectangular, any one to four marker images 22 may be provided.

Further, as shown in FIG. 2, the imaging plane 10 differs from the mounting surface 2a of the mounting table 2 in the distance from the viewpoint position 12a of the user 12. As shown in FIG. Further, since the mounting surface 2a of the mounting table 2 and the imaging surface 10 form a certain angle, the distance from the viewpoint position 12a to the position of the mounting surface 2a (mounting surface specific position) and the viewpoint The difference between the distance from the position 12a to the point where the straight line connecting the viewpoint position 12a and the mounting surface specific position intersects the imaging plane 10 varies depending on the mounting surface specific position. Therefore, the processing device 5 causes the second image display 7 to display an image in which the placed image 21 corrected for the difference in appearance due to the difference in distance is imaged on the imaging plane 10 .

Also, when requesting the user to sequentially present a plurality of types of target documents 11, the processing device 5 determines whether or not a certain target document 11 is placed in the correct position based on the image captured by the camera 6. When it is determined that the target document 11 is placed in the correct position and the user switches the target document 11 to be placed on the placing table 2, the placed image 21 is displayed on the video display 7 for the new target document 11. You may decide to switch. Since the placement image 21 is switched when the target document 11 to be placed is switched, it is possible to guide the user 12 to switch the target document in an easy-to-understand manner.

FIG. 4 is a diagram for explaining another example of an image included in the guide video. The guide image 23 in FIG. 4 has a different color from the guide image 20 in FIG. The color change from the guide image 20 in FIG. 3 to the guide image 23 in FIG. 4 indicates to the user 12 that the target document 11 is placed in the correct position. The guide image 23 also includes guide text 24 . The guide text 24 is a text indicating that the target document 11 is placed in the correct position.

The processing device 5 determines whether or not the target document 11 is placed in the correct position based on the image captured by the camera 6, and if the target document 11 is not placed in the correct position, the second image display 7 3 is displayed (first guide image), and when the target document 11 is placed in the correct position, the second video display 7 is caused to display the guide image 23 of FIG. When the target document 11 can be placed at the correct position, the guide image changes in the space, so the user 12 can visually confirm that the target document 11 has been correctly placed without moving the line of sight. can be done.

In addition, the processing device 5 confirms that the target document 11 is placed at the correct position in the guide image 23 at a position that does not overlap with the target document 11 placed at the correct position as seen from the viewpoint position 12a of the user 12. A guide text 24 indicating is displayed. Although the guide text 24 is exemplified here, a predetermined image showing that the target document 11 is placed in the correct position may be displayed instead of or together with it. Since the guide text 24 or a predetermined image is displayed when the object document 11 is placed in the correct position, the user 12 can visually confirm that the object document 11 has been placed correctly without moving the line of sight. can be confirmed.

By displaying a portion that does not overlap with the target document 11 when viewed from the viewpoint position 12a of the user 12 on the imaging plane 10, it is possible to express that the target document 11 is placed at the correct position by an easy-to-understand display change. Here, it is expressed by changing the background color of the guide image and presenting the guide text 24, but it is not limited to this. As another example, various video effects can be used. In addition to the guide image, or instead of the guide image, a device that emits a sound represented by a buzzer or a speaker is provided to notify the user 12 that the target document 11 is placed in the correct position with a predetermined sound. You may

Here, an example is shown in which the processing device 5 judges whether or not the target document 11 is placed in the correct position from the image captured by the camera 6, but the present invention is not limited to this. As another example, a sensor for detecting that the target document 11 is placed at the correct position on the placement surface 2a of the placement table 2 is separately provided, and the processing device 5 detects the target document 11 from the detection result of the sensor. It may be determined that the object is placed in the correct position. For example, sensors having infrared light emitters and receivers are available. The light-emitting element and the light-receiving element may be arranged vertically so as to sandwich the placement surface 2a so that the infrared rays from the light-emitting element do not reach the light-receiving element when the target document 11 is placed in the correct position. .

Further, in the first embodiment, the spatial image forming device 3 is arranged below the mounting table 2, and the polarization beam splitter 9 of the spatial image forming device 3 is parallel to the mounting surface 2a of the mounting table 2. However, it is not limited to this.

(Second embodiment)
The second embodiment shows an example in which the second video display and the spatial image forming device are arranged above the mounting table. In the following, differences in the second embodiment from the first embodiment will be mainly described.

FIG. 5 is a diagram showing the surroundings of the table of the teller device according to the second embodiment together with the viewpoint position of the user. FIG. 5 shows the user 12, the table 2, the target document 11, the spatial imaging device 33, the camera 6, the second image display device 37, and the imaging plane 40. As shown in FIG. The spatial imager 33, the second image display 37, and the image plane 40 respectively correspond to the spatial imager 3, the second image display 7, and the image plane 10 in the first embodiment. .

In this embodiment, it is assumed that the table 2 on which the target document 11 is placed in the window device is set at a slightly higher position than in the case of the first embodiment. When the mounting table 2 is raised, the line of sight of the user 12 is directed slightly upward. In the example of FIG. 5, the line of sight of the user 12 is generally horizontal or slightly upward. In the present embodiment, the second image display device 37 and the spatial image forming device 33 are arranged above the mounting table 2 so as to cope with the difference in the line-of-sight direction of the user 12 .

The polarizing beam splitter 39 of the spatial imager 33 is the same member as the polarizing beam splitter 9 of the first embodiment, and is positioned above the mounting surface of the mounting table 2 on the front side of the user 12 (left side in FIG. 5). ) is arranged obliquely so that it is higher than the far side (right side in FIG. 5).

The second image display 37 is the same device as the second image display 7 of the first embodiment, and is arranged above the polarizing beam splitter 39, obliquely from the front to the back and toward the upper surface of the polarizing beam splitter 39. It has an image display surface 37a arranged in the .

The reflector 38 is above the polarizing beam splitter 39 and behind the image display surface 37a, and has a reflecting surface 38a that is obliquely arranged so as to face forward from the back and the upper surface of the polarizing beam splitter 39. It is a reflective member.

According to this embodiment, the second image display device 37 is placed in front of the mounting surface 2a and the image display surface 37a is directed to the back, and the imaging surface 40 is formed on the line of sight of the user 12. can. In the window device of the present embodiment, the imaging plane 40 is arranged at a position symmetrical to the image display surface 37 a of the second image display 37 with respect to the plane formed by the polarization beam splitter 39 . Therefore, by changing the arrangement and angle of the second video display 37 according to the expected line-of-sight direction of the user 12, the imaging plane 40 can be configured at an appropriate position and angle.

Each embodiment mentioned above is an illustration for description, and is not the meaning which limits the scope of the invention. Various other aspects can be adopted by those skilled in the art without departing from the scope of the invention.

DESCRIPTION OF SYMBOLS 1... Counter device, 2... Placement base, 2a... Placement surface, 3... Spatial imaging device, 4... First image display device, 5... Processing device, 6... Camera, 7... Image display device, 7a... Image display Surface 8 Reflector 8a Reflective surface 8b Rear surface 8c Through hole 9 Polarizing beam splitter 10 Imaging surface 11 Target document 12 User 12a Viewpoint position 20 Guide image 21 Placed image 22 Marker image 23 Guide image 24 Guide text 33 Spatial imaging device 37 Video display 37a Video display surface 38 Reflector 38a Reflecting surface 39 Polarizing beam splitter 40 Imaging surface

Claims (6)

a mounting table on which the target document is mounted on a mounting surface made of a transmissive material that transmits light;
an image display unit that outputs a predetermined guide image;
a spatial imaging unit that forms the light of the guide image from the image display unit on an image forming surface in space that intersects with the line of sight of the user viewing the mounting surface;
an imaging unit configured to capture an image of the target document placed on the placement surface through the placement surface;
has
The spatial imaging unit has a beam splitting member and a reflecting member, and the beam splitting member reflects at least part of the light of the guide image from the image display unit toward the reflecting member, A member reflects at least a portion of light from the beam splitting member toward the beam splitting member, and the beam splitting member transmits at least a portion of light from the reflecting member toward the imaging plane. and
The beam splitting member is a plate-shaped member that is obliquely arranged above the placement surface so that the front side of the user is higher than the back side thereof, and
The image display unit has an image display surface disposed obliquely above the beam splitting member so as to face from the front to the back and to the upper surface of the beam splitting member,
The reflecting member is above the beam splitting member and behind the image display surface, and has a reflecting surface arranged obliquely so as to face forward from the back and the upper surface of the beam splitting member, A retroreflective member that reflects light in the direction of incidence by the reflective surface,
image capture device. determining whether or not the target document is placed at the correct position, and if the target document is not placed at the correct position, causing the image display unit to display a predetermined first guide image, and further comprising a processing unit that causes the image display unit to display a second guide image different from the first guide image when placed in the correct position;
The imaging device according to claim 1. The processing unit determines that the target document is placed at the correct position in the second guide image at a position that does not overlap with the target document placed at the correct position viewed from the viewpoint position of the user. display predetermined text or images indicating that
3. The imaging device according to claim 2 . The image display unit displays a marker image indicating the position of at least one corner of the target document when the target document is placed at the correct position on the mounting table. further comprising a processing unit that causes the image to be displayed so as to be imaged at a position outside the target document when placed at the correct position of
The imaging device according to claim 1. A mounted image simulating a state in which the target document is placed at the correct position on the mounting table is displayed on the image display unit at a position on the imaging plane that overlaps the target document placed at the correct position. It further has a processing unit for displaying to be imaged,
The imaging device according to claim 1. When acquiring images of a plurality of target documents, the processing unit causes the image display unit to display a guide image for a first target document, and when the first target document is placed in the correct position, the image causing the display unit to display a guide image for a second target document different from the guide image for the first target document;
6. The imaging device according to claim 5 .

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