JP2018091969A - Image display system and image display method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display system and an image display method that can make it easy for a user to see a combined image of a plurality of photographic images.SOLUTION: An image display system 40 includes: an image acquisition unit 42 for acquiring a plurality of photographic images; an image combination unit 44 for combining the plurality of photographic images; and a display device 16 for displaying a combined photographic image. The image display system 40 further includes a detection unit 20 and a position adjustment unit 48. The detection unit 20 detects distance between the display device 16 and positions of eyes of a user. On the basis of the detected distance, the position adjustment unit 48 adjusts connection positions for combining the plurality of photographic images.SELECTED DRAWING: Figure 3

Description

  The present invention relates to an image display system and an image display method.

  Patent Document 1 listed below discloses a rear confirmation device and a confirmation method for displaying an image behind a vehicle. In this rear confirmation device and confirmation method, the center part of the rearview mirror monitor is the normal display range, the left and right end parts are the reduced display range, and the rear image of the vehicle photographed by one rear camera is displayed on the rearview mirror monitor. Is displayed. Then, when the driver's line of sight moves consciously, for example, when the line of sight is directed to the right side, the reduced display range at the right end of the room mirror monitor is expanded in the left-right direction.

  By the way, vehicles such as automobiles tend to be mirrorless. In the mirrorless configuration, an image of the rear of the vehicle in the middle of the vehicle width taken by the rear camera and an image of the rear of the vehicle taken by the left and right cameras corresponding to the left and right side door mirrors are taken. The images are combined and displayed on the rearview mirror monitor. That is, in the room mirror monitor, a captured image captured by the rear camera is displayed at the center, a captured image captured by the left camera is displayed on the left side, and a captured image captured by the right camera is displayed on the right side. .

  The three mirrored images are combined and displayed on the room mirror monitor, but the boundary between the captured images becomes a joint and a blind portion occurs. In addition, the visibility and visibility of the rearview mirror monitor vary depending on the height and physique differences of the driver. For example, if the driver's eyes are far from the rearview mirror monitor, it is difficult to see the captured image of the rear of the vehicle displayed in the center. For this reason, it is difficult to set the joint position of the captured image, and a countermeasure has been desired.

JP 2016-49953 A

  In consideration of the above-described facts, the present invention provides an image display system and an image display method capable of making it easy to see a plurality of combined captured images for a user.

  In order to solve the above problems, an image display system according to a first embodiment of the present invention includes an image acquisition unit that acquires a plurality of captured images, and an image composition unit that combines the plurality of captured images acquired by the image acquisition unit. A display device that displays a plurality of photographed images synthesized by the image synthesis unit, a detection unit that detects the distance between the display device and the position of the user's eyes, and a plurality of values based on the distances detected by the detection unit A position adjusting unit that adjusts a joint position for combining the captured images.

  The image display system according to the first embodiment includes an image acquisition unit, an image composition unit, and a display device. The image acquisition unit acquires a plurality of captured images. The image composition unit synthesizes a plurality of captured images acquired by the image acquisition unit. The display device displays a plurality of captured images combined by the image combining unit.

  Here, the image display system further includes a detection unit and a position adjustment unit. The detection unit detects a distance between the display device and the position of the user's eyes. The position adjustment unit adjusts a joint position where a plurality of captured images are combined based on the distance detected by the detection unit. For this reason, the joint position of the several picked-up image displayed on a display apparatus can be adjusted for every user based on the distance of a display apparatus and a user's eye position.

  The image display system according to the second embodiment of the present invention includes a first captured image at the rear of the vehicle at one end in the vehicle width direction, a second captured image at the rear of the vehicle at the middle in the vehicle width direction, and the rear of the vehicle at the other end in the vehicle width direction. An image acquisition unit that acquires the third captured image, an image composition unit that combines the first captured image, the second captured image, and the third captured image acquired by the image acquisition unit, and a first image combined by the image composition unit. A display device that displays the first photographed image, the second photographed image, and the third photographed image, a detection unit that detects a distance between the display device and the eye position of the driver seated in the driver's seat, and a detection unit that detects A position adjusting unit for adjusting a first joint position for combining the first photographed image and the second photographed image and a second joint position for synthesizing the second photographed image and the third photographed image based on the measured distance. It is equipped with.

  The image display system according to the second embodiment includes an image acquisition unit, an image composition unit, and a display device. The image acquisition unit acquires a first captured image behind the vehicle on one end side in the vehicle width direction, a second captured image behind the vehicle in the middle in the vehicle width direction, and a third captured image behind the vehicle on the other end side in the vehicle width direction. The image composition unit synthesizes the first captured image, the second captured image, and the third captured image acquired by the image acquisition unit. The display device displays the first captured image, the second captured image, and the third captured image combined by the image combining unit.

  Here, the image display system further includes a detection unit and a position adjustment unit. The detection unit detects the distance between the display device and the position of the eyes of the driver seated in the driver's seat. The position adjusting unit is configured to combine the first joint image and the second photographed image with the first photographed image and the second photographed image based on the distance detected by the detector, and to combine the second photographed image and the third photographed image. Adjust the joint position. Therefore, the first joint position and the second joint position displayed on the display device can be adjusted for each user based on the distance between the display device and the driver's eye position.

  In the image display system according to the third embodiment of the present invention, in the image display system according to the second embodiment, when the distance is longer than the reference value, the position adjustment unit is configured to connect the first joint position and the second joint position. And the distance between the first joint position and the second joint position is adjusted narrowly when the distance is shorter than the reference value.

According to the image display system according to the third embodiment, when the distance between the display device and the driver's eye position is long and the eye position is far from the display device, the first joint position and the second joint position are Can be widened to make it easier to see the second captured image behind the vehicle.
On the other hand, when the distance between the display device and the driver's eye position is short and the eye position is close, the distance between the first seam position and the second seam position is narrowed, and the first photographed image behind the vehicle. Each of the third photographed images can be easily seen.

  In the image display system according to the fourth embodiment of the present invention, in the image display system according to the second embodiment or the third embodiment, the detection unit detects the distance in real time, and the position adjustment unit is detected in real time. Based on the measured distance, the first joint position and the second joint position are adjusted in real time.

  According to the image display system according to the fourth embodiment, since the distance between the display device and the driver's eye position is detected in real time, the distance between the first joint position and the second joint position is real time. Can be adjusted.

  An image display system according to a fifth embodiment of the present invention is the image display system according to any one of the second to fourth embodiments, wherein the display device is provided on the inner mirror for the vehicle.

  According to the image display system of the fifth embodiment, since the display device is provided on the vehicle inner mirror, the first photographed image, the second photographed image, and the third photographed image synthesized in the vehicle inner mirror are displayed on the driver. It can be easy to see every time.

  An image display system according to a sixth embodiment of the present invention is the image display system according to any of the second to fifth embodiments, wherein the first camera that captures the first captured image and the second camera that captures the second captured image. 2 cameras, and a third camera that captures a third captured image.

  The image display system according to the sixth embodiment includes a first camera, a second camera, and a third camera. The first camera captures the first captured image. The second camera captures the second captured image. The third camera captures a third captured image. An image display system including these first to third cameras can be easily constructed.

  The image display method according to the seventh embodiment of the present invention includes a first captured image at the rear of the vehicle at one end in the vehicle width direction, a second captured image at the rear of the vehicle at the middle in the vehicle width direction, and the rear of the vehicle at the other end in the vehicle width direction. Acquiring the third captured image, detecting the distance between the display device and the position of the eyes of the driver seated in the driver's seat, and the first captured image and the second based on the detected distance. Adjusting the first joint position for combining the photographed image and the second joint position for synthesizing the second photographed image and the third photographed image; and the adjusted first joint position and second joint position; And a step of combining the first photographed image, the second photographed image, and the third photographed image, and a step of displaying the synthesized first photographed image, second photographed image, and third photographed image on a display device. Yes.

In the image display method according to the seventh embodiment, a first captured image behind the vehicle on one end side in the vehicle width direction, a second captured image behind the vehicle in the middle in the vehicle width direction, and a third image behind the vehicle on the other end side in the vehicle width direction. A captured image is acquired. On the other hand, the distance between the display device and the position of the eyes of the driver sitting in the driver's seat is detected. Based on the detected distance, the first joint position where the first photographed image and the second photographed image are combined and the second joint position where the second photographed image and the third photographed image are combined are adjusted. The first photographed image, the second photographed image, and the third photographed image are synthesized at the adjusted first joint position and second joint position, and the plurality of photographed images are displayed on the display device.
Therefore, the first joint position and the second joint position displayed on the display device can be adjusted for each driver based on the distance between the display device and the driver's eye position.

  ADVANTAGE OF THE INVENTION According to this invention, the image display system and image display method which can make it easy to see a some composite image | photographed image according to a user can be provided.

1 is a front view of an inner mirror for a vehicle to which an image display system and an image display method according to an embodiment of the present invention are applied, as viewed from a driver seated in a driver's seat. It is the top view which looked at the vehicle (automobile) with which the image display system and image display method which concern on this Embodiment are applied from the vehicle upper direction. It is a system block block diagram of the image display system which concerns on this Embodiment. It is a conceptual diagram explaining the detection method of the distance of the display apparatus and the position of a driver | operator's eye by the detection part of the image display system which concerns on this Embodiment. It is a flowchart explaining the image display method which concerns on this Embodiment.

  Hereinafter, an image display system and an image display method according to an embodiment of the present invention will be described with reference to FIGS. In the present embodiment, the image display system and the image display method are applied to a vehicle such as an automobile. In the drawing, reference numeral FR appropriately shown indicates the mirror front side of the vehicle inner mirror (room mirror monitor), and here, the direction coincides with the vehicle front side when the vehicle inner mirror is mounted on the vehicle. The symbol IN indicates the inner side in the mirror width direction, and is the direction that matches the inner side in the vehicle width direction. Reference sign UP indicates the mirror upward direction, which is the same as the vehicle upward direction. The image display system and the image display method according to the present embodiment are mounted on a vehicle as an example, and each component will be described according to each direction of the vehicle. However, the application direction is limited to the present embodiment. is not.

(Image display system configuration)
First, as shown in FIG. 3, the image display system 40 according to the present embodiment includes an image acquisition unit 42, an image composition unit 44, an image output unit 46, a display device 16, and a detection unit 20. And a position adjusting unit 48. Furthermore, the image display system 40 includes three cameras, ie, a first camera 22, a second camera 24, and a third camera 26 as an imaging unit.

  As shown in FIG. 2, the first camera 22 is attached to the left side 34 as one end side in the vehicle width direction of the vehicle 30, here the outside of the left front side door. The first camera 22 captures a video on the left rear side of the vehicle and generates a first captured image. The second camera 22 is mounted on the vehicle 30 in the middle of the vehicle rear portion 38 in the vehicle width direction, here inside the rear glass. The second camera 22 captures an intermediate video at the rear of the vehicle and generates a second captured image. The third camera 26 is attached to the right side 36 as the other side in the vehicle width direction of the vehicle 30, here the outside of the right front side door. The third camera 26 captures a video on the right rear side of the vehicle, and generates a third captured image.

Returning to FIG. 3, the image acquisition unit 42 acquires a plurality of captured images. More specifically, the image acquisition unit 42 outputs the first captured image output from the first camera 22 on the left rear side of the vehicle, the second captured image output from the second camera 24 at the center rear of the vehicle, and output from the third camera 26. The third captured image on the right rear side of the vehicle is acquired.
The image synthesis unit 44 synthesizes a plurality of captured images acquired by the image acquisition unit 42. Specifically, in the image composition unit 44, the second captured image is centered, the first captured image is connected to the left side of the second captured image, and the third captured image is connected to the right side of the second captured image. In addition, a composition process for displaying as one captured image is performed.
The image output unit 46 outputs a plurality of captured images combined by the image combining unit 44 to the display device 16.

  In the display device 16, a plurality of captured images output from the image output unit 46 are displayed on a single display screen (not shown). The display device 16 is incorporated in an inner mirror 10 for a vehicle that is mounted on the top of the windshield 32 of the vehicle 30 shown in FIG. More specifically, as shown in FIG. 1, the vehicle inner mirror 10 is a hollow rectangular mirror having a mirror width direction as a longitudinal direction, a mirror vertical direction as a short direction, and a mirror longitudinal direction as a thickness direction. A housing 12 is provided. The mirror housing 12 is mounted on a windshield or a ceiling in a vehicle compartment via a support arm 14. A rectangular opening (reference numeral is omitted) having a mirror width direction as a longitudinal direction is formed in the mirror rear wall of the mirror housing 12.

The display device 16 is incorporated in the mirror housing 12, and an effective area formed in a rectangular shape on the display screen of the display device 16 that is coincident with the opening of the mirror housing 12 is exposed through the opening. In the present embodiment, the display device 16 is configured by a liquid crystal display (LCD). The display device 16 may be another display such as an organic electro-luminescence display (OELD).
Although not shown, a half mirror is arranged on the front surface of the display screen of the display device 16. Although the arrangement position is not particularly limited, a switch 18 for switching on and off of the display device 16 is disposed below the opening of the mirror housing 12.

In the display device 16 shown in FIG. 1, a second captured image of a plurality of captured images output from the image output unit 46 (see FIG. 3) is displayed in the central portion 16 </ b> A of the display screen. Further, the first captured image of a plurality of captured images is displayed on the left side portion 16B of the display screen. And the 3rd picked-up image of a some picked-up image is displayed on the right part 16C of a display screen.
The boundary between the second photographed image and the first photographed image is a first joint position B1 where the photographed images are joined by the synthesis process, and is a part that becomes a blind. Similarly, the boundary between the second photographed image and the third photographed image is a part that becomes the second joint position B2.

As shown in FIG. 1, the detection unit 20 is provided on the right side of the switch 18 below the opening of the mirror housing 12 in the present embodiment. Here, the vehicle 30 is a right-hand drive vehicle. As shown in FIG. 4, the detection unit 20 detects a distance L <b> 1 between the detection unit 20 and the position 50 of the eyes of the driver as a user seated in the driver's seat of the vehicle 30. In the present embodiment, since the detection unit 20 is arranged in the mirror housing 12 in the vicinity of the display device 16, the arrangement position of the detection unit 20 can be regarded as substantially equivalent to the arrangement position of the display device 16. Accordingly, here, the distance L1 between the display screen 16 of the display device 16 and the eye position 50 is detected by the detection unit 20.
In this sense, the distance L1 only needs to be detected as a result. Therefore, the detection unit 20 detects the detection unit 20 and the eye position 50 by being provided around the handle, the instrument panel, and the like. A distance L1 between the eye position 50 and the eye position 50 may be calculated.
As the detection unit 20, a monocular camera, a stereo camera, a position sensor, or the like can be used practically.

  In the present embodiment, the detection unit 20 is configured to detect the distance in real time, for example, at intervals of 5 seconds to 10 seconds. For example, the detection unit 20 may operate at a real time interval, or may output a detection result at every real time interval in a constantly operating state. Alternatively, the detection unit 20 may be configured to always output the detection result in the normal operation state, and the position adjustment unit 48 captures the detection result at a real time interval.

  Here, as shown in FIG. 4, even if the line of sight is the same height h2, if the driver's seat is moved to the vehicle rear side due to a height difference or a physique difference, the vehicle rear side from the position p1 The eye position 50 moves to the eye position 52 as the eye position 52. At this time, the distance L2 between the display device 16 and the eye position 52 is longer than the distance L1. Even at the same position p1, the distance L3 between the display device 16 and the eye position 54 is longer than the distance L1 when the height of the line of sight is a height h1 lower than the height h2.

The position adjustment unit 48 shown in FIG. 3 is based on the distances L1 to L3 detected by the detection unit 20, and the first joint position B1 and the second joint displayed on the display device 16 shown in FIG. The position B2 is adjusted. More specifically, for example, if a driver having a standard height and physique is the eye position 54, the distance L3 is set as a reference value, and the position adjusting unit 48 uses the first joint position B1 and the second joint as follows. The position of the eye position B2 is adjusted.
At the eye position 52, the detection unit 20 detects the distance L2. In the position adjustment unit 48, since the distance L2 is longer than the reference value (distance L3), the first joint position B1 and the second joint position B2 are respectively moved in the direction of arrow B on the outer side in the mirror width direction. For this reason, since the space | interval of 1st joint position B1 and 2nd joint position B2 is adjusted widely, the center part 16A of a display screen spreads in a mirror width direction, and the display range of a 2nd picked-up image spreads.
At the eye position 50, the detection unit 20 detects the distance L1. In the position adjustment unit 48, since the distance L1 is shorter than the reference value (distance L3), the first joint position B1 and the second joint position B2 are respectively moved in the direction of arrow A inside the mirror width direction. For this reason, since the interval between the first joint position B1 and the second joint position B2 is adjusted to be narrow, the left portion 16B and the right portion 16C of the display screen spread in the mirror width direction, and the first captured image and the third portion The display range of the captured image is expanded in the mirror width direction, and the display range of the first captured image and the third captured image is expanded.
The position adjusting unit 48 adjusts the positions of the first joint position B1 and the second joint position B2 in accordance with the real-time interval of the detection unit 20.

The position adjustment unit 48 includes a table in which the interval between the first joint position B1 and the second joint position B2 is appropriately set for each distance between the display screen and the eye position. That is, the position adjustment unit 48 calls the interval stored in the table based on the detection result (distance) output from the detection unit 20.
Note that the position adjustment unit 48 may be configured to calculate the interval by calculation processing using a preset calculation formula based on the detection result.

  Although the image acquisition unit 42, the image synthesis unit 44, the image output unit 46, and the position adjustment unit 48 of the image display system 40 illustrated in FIG. 3 are omitted in the present embodiment, they are mounted as an integrated circuit on a mounting board. ing. For example, a printed circuit board (PCB) is used as the mounting board. The mounting board is configured to be housed in the mirror housing 12.

(Image display method)
The image display method by the above-mentioned image display system 40 is demonstrated using the flowchart shown by FIG. In the description of the image display method, FIGS.

  In the image display method, first, a first photographed image is photographed using the first camera 22 shown in FIGS. 2 and 3, a second photographed image is photographed using the second camera 24, and the third A third photographed image is photographed using the camera 26 (S1). The first captured image is a video on the left rear side of the vehicle. The second photographed image is a video at the rear center of the vehicle. The third captured image is a video on the right rear side of the vehicle.

The first captured image, the second captured image, and the third captured image are acquired by the image acquisition unit 42 of the image display system 40 (S2). The first captured image, the second captured image, and the third captured image acquired by the image acquisition unit 42 are combined in the image combining unit 44 (S3). The synthesized first image, second image, and third image are output to the image output unit 46 (S9), and further output from the image output unit 46 to the display device 16 (S10).
As shown in FIG. 1, in the display device 16, the second captured image is displayed in the central portion 16A, the first captured image is displayed in the left portion 16B, and the third captured image is displayed in the right portion 16C. The boundary between the second photographed image and the first photographed image is the first joint position B1, and the boundary between the second photographed image and the third photographed image is the second joint position B2. The first joint position B1 and the second joint position B2 are both blind portions.

  Here, it is determined whether or not to continue displaying the captured image on the display device 16 (S11). For example, when the engine of the vehicle 30 is stopped, there is no need to check the rear of the vehicle, so that the display is not continued. At this time, a series of operations of the image display method ends. When the display is continued, the process returns to the first stage of the image display method.

  On the other hand, whether the first joint position B1 and the second joint position B2 are switched in the first photographed image, the second photographed image, and the third photographed image displayed on the display device 16 after a preset time has elapsed. It is determined whether or not (S4). Here, the preset time is a real-time interval. When there is no need to switch, the process returns to the previous stage of step S4 again.

  When it is necessary to switch in step S4, the detection unit 20 shown in FIGS. 1, 3 and 4 is used to display the display screen of the display device 16 and the position of the driver's eyes, for example, as shown in FIG. A distance L3 to 54 is detected (S5). Based on the detected distance L3, it is determined whether or not to switch the interval between the first joint position B1 and the second joint position B2 (S6). If the distance L3 is set to the reference value according to the above-described example, there is no need to switch the first joint position B1 and the second joint position B2, and the process returns to the previous stage of step S4.

  On the other hand, when the driver is at the eye position 52, the distance L2 is detected by the detection unit 20. Since the distance L2 is longer than the distance L3, the position adjusting unit 48 performs an adjustment to increase the interval between the first joint position B1 and the second joint position B2 (S7). Further, when the driver is at the eye position 50, the distance L1 is detected by the detection unit 20. Since the distance L1 is shorter than the distance L3, the position adjustment unit 48 performs an adjustment to narrow the interval between the first joint position B1 and the second joint position B2 (S7).

  At the first joint position B1 and the second joint position B2 adjusted by the position adjustment unit 48, the first photographed image, the second photographed image, and the third photographed image obtained by the image obtaining unit 42 in step S2 are images. Synthesized (S8). The first captured image, the second captured image, and the third captured image are displayed on the display device 16 (S9 and S10).

(Operation and effect of the present embodiment)
As shown in FIG. 3, the image display system 40 according to the present embodiment includes at least an image acquisition unit 42, an image composition unit 44, and the display device 16. The image acquisition unit 42 acquires a plurality of captured images. Specifically, in the image acquisition unit 42, the first captured image is acquired from the first camera 22, the second captured image is acquired from the second camera 24, and the third captured image is acquired from the third camera 26. The image synthesis unit 44 synthesizes a plurality of captured images acquired by the image acquisition unit 42. The display device 16 has a plurality of photographed images synthesized by the image synthesizing unit 44, that is, in the vehicle inner mirror 10 shown in FIG. 1, the second captured image at the center portion 16A, the first captured image at the left portion 16B, and the right portion 16C. The third captured image is displayed on the screen. The second photographed image is a video at the rear center of the vehicle. The first captured image is a video on the left rear side of the vehicle, and the third captured image is a video on the right rear side of the vehicle.

Here, as shown in FIGS. 1 and 3, the image display system 40 further includes a detection unit 20 and a position adjustment unit 48. As illustrated in FIG. 4, the detection unit 20 detects distances L1, L2, and L3 between the display device 16 and, for example, eye positions 50, 52, and 54 of a driver as a user. The position adjustment unit 48, based on the distances L1, L2, and L3 detected by the detection unit 20, combines the second captured image and the first captured image with the first joint position B1, the second captured image, and the third. The second joint position B2 for combining the photographed image is adjusted.
Therefore, the first joint position B1 and the second joint position B2 of the plurality of photographed images displayed on the display device 16 are set as the distance L1, between the display device 16 and the driver's eye positions 50, 52, 54, Adjustments can be made for each driver based on L2 and L3.

Therefore, in the image display system 40 according to the present embodiment, it is possible to make it easy to see a plurality of synthesized captured images according to the driver.
More specifically, if the driver's eye position 52 is far from the display screen of the display device 16, the distance between the first joint position B1 and the second joint position B2 is increased, and the vehicle is displayed on the central portion 16A. This makes it easier to see the second captured image behind. On the other hand, when close to the opposite, the interval between the first joint position B1 and the second joint position B2 is narrowed, and the first photographed image displayed on the left side 16B and the right part 16C are displayed on the left side behind the vehicle. The third photographed image on the right rear side of the vehicle can be made easier to see.

In the image display system 40 according to the present embodiment, as shown in step S4 of FIG. 5, the distances L1, L2, and L3 between the display device 16 and the driver's eye positions 50, 52, and 54 are real-time. Detected. For this reason, in the display apparatus 16, the space | interval of 1st joint position B1 and 2nd joint position B2 can be adjusted in real time.
In particular, since the real-time interval is, for example, 5 seconds to 10 seconds, the first joint position B1 and the second joint position B2 are appropriately followed by following the movement of the head of the driver who is driving the vehicle 30. The interval between and is adjusted. When the real-time interval is less than 5 seconds, the interval between the first joint position B1 and the second joint position B2 changes frequently, and the captured image fluctuates, making it difficult to see.
If the real-time interval exceeds 10 seconds, the adjustment of the interval between the first joint position B1 and the second joint position B2 is not followed with respect to the change in the eye position.

  Furthermore, in the image display system 40 according to the present embodiment, as shown in FIG. 1, since the display device 16 is provided in the vehicle inner mirror 10, the first captured image synthesized in the vehicle inner mirror 10, The second photographed image and the third photographed image can be easily viewed for each driver.

  The image display system 40 according to the present embodiment includes a first camera 22, a second camera 24, and a third camera 26, as shown in FIGS. The first camera 22 captures the first captured image. The second camera 24 captures a second captured image. The third camera 26 captures a third captured image. The image display system 40 can be easily constructed including the first camera 22, the second camera 24 and the third camera 26.

Furthermore, in the image display method according to the present embodiment, as shown in FIG. 5, first, a first captured image on the left rear side of the vehicle, a second captured image on the center rear of the vehicle, and a third captured image on the right rear side of the vehicle are acquired. (S2). On the other hand, distances L1, L2, and L3 between the display device 16 and the positions 50, 52, and 54 of the eyes of the driver sitting in the driver's seat are detected (see S5 and FIG. 4). Based on the detected distances L1, L2, and L3, the first joint position B1 for combining the first captured image and the second captured image, and the second joint for combining the second captured image and the third captured image. The position B2 is adjusted (S7). The first photographed image, the second photographed image, and the third photographed image are synthesized at the adjusted first joint position B1 and second joint position B2 (S8), and the synthesized photographed image is displayed on the display device 16. Is done.
Therefore, the first joint position B1 and the second joint position B2 displayed on the display device 16 are based on the distances L1, L2, and L3 between the display device 16 and the driver's eye positions 50, 52, and 54. Can be adjusted for each driver.

[Supplementary explanation of the above embodiment]
The present invention is not limited to the embodiment described above, and can be modified without departing from the scope of the invention.
For example, in the present invention, the display device of the image display system may be a display device attached to an instrument panel. In this case, the display device is also used as an operation panel for a television monitor, navigation monitor, audio, or the like.
In the image display system, the image display system may further include a camera that captures the vehicle side surface direction and the vehicle front lower side, and the captured images may be combined and displayed on the display device. In this case, the joint position is 3 or more.

DESCRIPTION OF SYMBOLS 10 Inner mirror for vehicles 16 Display apparatus 20 Detection part 22 1st camera 24 2nd camera 26 3rd camera 30 Vehicle 40 Image display system 42 Image acquisition part 44 Image composition part 48 Position adjustment part 50, 52, 54 Eye position L1 , L2, L3 distance

Claims (7)

An image acquisition unit for acquiring a plurality of captured images;
An image synthesis unit that synthesizes the plurality of captured images acquired by the image acquisition unit;
A display device that displays the plurality of captured images combined by the image combining unit;
A detection unit that detects a distance between the display device and the position of the user's eyes;
Based on the distance detected by the detection unit, a position adjustment unit for adjusting a joint position for combining the plurality of captured images;
An image display system comprising: An image acquisition unit that acquires a first captured image behind the vehicle on one end side in the vehicle width direction, a second captured image behind the vehicle in the middle of the vehicle width direction, and a third captured image behind the vehicle on the other end side in the vehicle width direction;
An image synthesis unit that synthesizes the first captured image, the second captured image, and the third captured image acquired by the image acquisition unit;
A display device for displaying the first photographed image, the second photographed image, and the third photographed image synthesized by the image composition unit;
A detection unit for detecting a distance between the display device and a driver's eye position in a driver's seat;
Based on the distance detected by the detection unit, a first joint position for combining the first captured image and the second captured image, and a second position for combining the second captured image and the third captured image. A position adjusting unit for adjusting the position of the second joint;
An image display system comprising: The position adjusting unit is
When the distance is longer than a reference value, the gap between the first joint position and the second joint position is adjusted widely,
The image display system according to claim 2, wherein when the distance is shorter than a reference value, an interval between the first joint position and the second joint position is adjusted to be narrow. The detection unit detects the distance in real time,
The image display system according to claim 2 or 3, wherein the position adjustment unit adjusts the first joint position and the second joint position in real time based on the distance detected in real time. The image display system according to claim 2, wherein the display device is provided on an inner mirror for a vehicle. A first camera that captures the first captured image;
A second camera for photographing the second photographed image;
A third camera for photographing the third photographed image;
The image display system according to any one of claims 2 to 5, further comprising: Obtaining a first photographed image behind the vehicle on one end side in the vehicle width direction, a second photographed image behind the vehicle in the middle of the vehicle width direction, and a third photographed image behind the vehicle on the other end side in the vehicle width direction;
Detecting the distance between the display device and the position of the eyes of the driver seated in the driver seat;
Based on the detected distance, a first joint position for combining the first captured image and the second captured image, and a second joint position for combining the second captured image and the third captured image. Adjusting steps,
Combining the first photographed image, the second photographed image, and the third photographed image at the adjusted first joint position and the second joint position;
Displaying the synthesized first photographed image, second photographed image, and third photographed image on the display device;
An image display method comprising: