WO2017179389A1

WO2017179389A1 - Viewing device for vehicle

Info

Publication number: WO2017179389A1
Application number: PCT/JP2017/011816
Authority: WO
Inventors: 智宣市川; 利成中居
Original assignee: 株式会社東海理化電機製作所
Priority date: 2016-04-15
Filing date: 2017-03-23
Publication date: 2017-10-19
Also published as: JP2017190109A; JP6602721B2

Abstract

In the present invention, a control device controls a monitor in such a manner that, if an instruction to change the viewing range of an image (34) is provided from an operating unit, a captured image (30) serving as a wide-range image having a range wider than that of a partial image (32) is displayed and a frame image (36) showing the range corresponding to the partial image (32) of the captured image (30) is displayed.

Description

Vehicle visual recognition device

The present invention relates to a vehicular visual recognition device for visualizing a vehicle periphery by photographing the vehicle periphery and displaying a captured image.

A technique is known in which a vehicle visual device for displaying a photographed image around a vehicle and visually recognizing the vehicle periphery is mounted on the vehicle instead of the optical mirror.

Some of such vehicular visual recognition devices display a partial image of a photographed image obtained by photographing with a camera or the like and provide visibility like an optical mirror. Since the partial image is displayed, when the viewing range is changed, the viewing range can be changed by changing the position where the partial image is cut out from the captured image.

However, there is a problem that it is difficult to recognize the degree of deviation from the original when changing the viewing range or the changeable viewing range.

Therefore, in Japanese Patent Application Laid-Open No. 2010-163104, a frame line indicating the range of the captured image and a frame line indicating the range of the clipped image are displayed as indicators together with the clipped partial image. By displaying the indicator, it is possible to easily recognize how much the changed viewing range is deviated from the original, the changeable viewing range, and the like by the indicator.

However, in Japanese Patent Application Laid-Open No. 2010-163104, when changing the viewing range, it is possible to roughly recognize the range of the captured image that is cut out by the indicator. There is room for improvement because it is not clear.

The present invention has been made in consideration of the above facts, and an object thereof is to clarify the position of a partial image to be displayed with respect to a captured image when changing the viewing range.

In order to achieve the above object, the vehicular visual recognition device according to the first aspect of the present disclosure instructs a change in the visual recognition range of the visual image and a display unit that displays the visual image for visually recognizing the periphery of the vehicle. When the instruction unit displays a partial image of a part of a captured image obtained by photographing the periphery of the vehicle as the visual image, and the instruction unit instructs to change the visual recognition range of the visual image, And a control unit that controls the display unit so as to display a wide range image in a wider range than the partial image and to display a range designation image representing a range corresponding to the partial image in the wide range image. .

According to the first aspect of the present disclosure, a visual image for visually recognizing the vehicle periphery is displayed on the display unit, and the vehicle periphery can be visually recognized by the visual image. The viewing range of the viewing image can be instructed to be changed by the instruction unit.

Then, in the control unit, the display unit is controlled so as to display a partial image of a part of the captured image obtained by photographing the periphery of the vehicle as a visual image. In addition, the control unit displays a wide range image wider than the partial image and represents a range corresponding to the partial image in the wide range image when the instruction unit instructs to change the viewing range of the visual image. The display unit is controlled to display the range designation image. Thereby, when changing the viewing range, the range designation image corresponding to the wide range image and the partial image is displayed, so that the position of the partial image to be displayed relative to the captured image can be clarified.

Note that, as in the second aspect of the present disclosure, the control unit moves the range designation image in accordance with an instruction from the instruction unit, and after the instruction from the instruction unit ends, the control unit displays a partial image corresponding to the moved range designation image. The display unit may be controlled to display as a visual image. Accordingly, it is possible to check the range of the partial image changed by the instruction unit as needed, and it is possible to display only the changed partial image after the change of the viewing range.

Further, as the wide range image, the entire captured image may be applied as in the third aspect of the present disclosure. Accordingly, the position of the partial image with respect to the entire captured image can be recognized when the viewing range is changed.

In addition, as in the fourth aspect of the present disclosure, when the wide range image is displayed, the control unit sets the display unit to display the wide range image by gradually widening the display range from the range of the partial image. You may control. Thereby, it is possible to give a visual effect of zooming out when changing the image to be displayed from the partial image to the wide area image.

In addition, as in the fifth aspect of the present disclosure, when the partial image corresponding to the moved range designation image is displayed as the visual image after the instruction of the instruction unit is ended, the control unit can display a wide range of display. The display unit may be controlled so as to display the image for visual recognition in a stepwise manner from the image range to the partial image range. Accordingly, it is possible to provide a visual effect such as zooming in when changing an image to be displayed from a wide range image to a partial image.

Further, as in the sixth aspect of the present disclosure, the control unit instructs when the instruction from the instruction unit is not within a predetermined time and when at least one of the instruction end is instructed by the instruction unit. It may be determined that the instruction of the part has ended. Thereby, it is possible to determine the end of the change of the viewing range.

As described above, according to the present invention, there is an effect that the position of the partial image to be displayed with respect to the captured image can be clarified when the viewing range is changed.

It is a figure which shows the vehicle mounting position example of the visual recognition apparatus for vehicles which concerns on embodiment of this invention. It is a figure which shows schematic structure of the visual recognition apparatus for vehicles which concerns on embodiment of this invention. It is a block diagram which shows the structure of the control system of the visual recognition apparatus for vehicles which concerns on this embodiment. It is a figure for demonstrating the image for visual recognition produced | generated from a picked-up image. It is a figure which shows an example of the image for visual recognition when the change of a visual recognition range is instruct | indicated. It is a figure which shows an example of the image for visual recognition after the change of a visual recognition range. It is a figure for demonstrating the example which widens the range displayed in steps, when changing a visual recognition range. It is a figure for demonstrating the example which narrows the range displayed in steps, when complete | finishing the change of a visual recognition range. It is a flowchart which shows an example of the flow of the process performed with the control apparatus of the visual recognition apparatus for vehicles which concerns on this embodiment.

Hereinafter, an example of an embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1A is a diagram illustrating an example of a vehicle mounting position of the vehicle visual recognition device according to the embodiment of the present invention, and FIG. 1B is a diagram illustrating a schematic configuration of the vehicle visual recognition device.

In the vehicular visual recognition device 10 according to the present embodiment, a rear side camera 12, a monitor 14 as a display unit, an operation unit 16 as an instruction unit, and a control device 18 as a control unit correspond to the left and right sides of the vehicle, respectively. Is provided.

The rear side camera 12 is installed outside on the front side end of the vehicle side door (front side door, not shown) at the middle in the vertical direction and photographs the rear side of the vehicle. The rear side camera 12 is provided in a substantially rectangular parallelepiped box-shaped housing 13 as a support, and a lens is arranged toward the rear side of the vehicle to photograph the rear side of the vehicle. The vehicle width direction inner side end part of the housing | casing 13 is attached to the side door, and the housing | casing 13 is supported by the side door (vehicle body side) so that rotation in the vehicle front-back direction is possible. In addition, the housing | casing 13 is good also as a form attached to other positions, such as a front fender, instead of a side door.

The monitor 14 is provided near the lower end of the front pillar, and mainly displays the image captured by the rear side camera 12 as a visual image. In other words, the rear side of the vehicle as the vehicle periphery can be visually recognized by checking the monitor 14 instead of the outer mirror. The monitors 14 are provided corresponding to the left and right sides of the vehicle.

The operation unit 16 gives an instruction to change the display position of the image displayed on the monitor 14, that is, the rear side viewing range. The operation unit 16 is, for example, a switch or a sensor for performing an instruction to change the visual range in the vehicle width direction, an instruction to change the vehicle in the vertical direction, or the monitor 14 (left or right) for changing the visual range. A switch or the like for instructing is provided. Specifically, it includes a left switch 16L and a right switch 16R for instructing a direction corresponding to the monitor 14 that changes the viewing range, and a direction instruction unit 16S for instructing the change direction.

The control device 18 is provided corresponding to each of the left and right sides of the vehicle, and performs display control of the captured images of the left and right rear side cameras 12. The control device 18 changes the viewing range on the rear side of the vehicle when reversing to make it easier to visually recognize obstacles on the lower side of the vehicle, and sets the viewing range in conjunction with the operation of the direction indicator. You may make it change and carry out turning interlocking control etc. which make it easy to visually recognize the vehicle rear side.

Subsequently, the configuration of the control system of the vehicle visual recognition device 10 according to the present embodiment will be described. FIG. 2 is a block diagram illustrating a configuration of a control system of the vehicle visual recognition device 10 according to the present embodiment.

The control device 18 includes a microcomputer in which a CPU 18A, a ROM 18B, a RAM 18C, and an I / O (input / output interface) 18D are connected to a bus 18E.

The ROM 18B stores various programs such as a vehicle visual control program for performing display control for displaying a rear side photographed image of the rear side camera 12 on the monitor 14. The program stored in the ROM 18B is expanded in the RAM 18C and executed by the CPU 18A, whereby display control on the monitor 14 is performed.

The I / O 18D is connected with an operation unit 16, a rear side camera 12, and a monitor 14 for instructing a change in the viewing range.

The operation unit 16 outputs a change instruction signal to the control device 18 when an instruction to change the rear side viewing range is given by the occupant. Specifically, the operation unit 16 is connected to the above-described left switch 16L, right switch 16R, and direction instruction unit 16S shown in FIG. 1B. That is, the direction (left or right) corresponding to the monitor 14 whose viewing range is changed is instructed by the left switch 16L or the right switch 16R, and the viewing direction changing direction (vehicle width direction and vehicle up-down direction) is directed by the direction instruction unit 16S. Instruct.

The rear side camera 12 obtains a rear side photographed image by photographing the rear side of the vehicle. The rear side photographed image obtained by photographing is output to the control device 18 as a photographing result of the rear side camera 12.

The monitor 14 displays a rear side photographed image photographed by the rear side camera 12 under the control of the control device 18.

Then, the control device 18 performs display control on the monitor 14 based on the photographing result of the rear side camera 12, and when the operation unit 16 instructs the change of the rear side viewing range, the monitor 14 The display position (rear side viewing range) is changed.

In addition, the control device 18 may perform display control of the left and right monitors 14 with one control device 18, or a pair may be provided corresponding to the left and right of the vehicle. When a pair of control devices 18 are provided corresponding to the left and right, the other control device 18 may be connected to each I / O 18D so that they can communicate with each other.

Here, the display method of the captured image of the rear side camera 12 on the monitor 14 by the control device 18 will be described in detail. FIG. 3 is a diagram for explaining a visual image generated from the captured image 30.

In the vehicular visual recognition device 10 according to the present embodiment, as shown in FIG. 3, a rear side camera 12 captures the rear side of the vehicle, and a partial image indicated by a dotted line in FIG. 3 from a captured image 30 obtained by the imaging. Cut out 32. Then, the cut out partial image 32 is displayed on the monitor 14 as a visual image 34. That is, in the vehicular visual recognition device 10 according to the present embodiment, since the partial image 32 of the captured image 30 is displayed, the visual recognition range can be changed by changing the cutout position. The viewing range is changed by operating the operation unit 16. Specifically, the direction (left or right) for changing the viewing range is selected by operating the left switch 16L or the right switch 16R, and the direction indicating unit 16S is operated to change the viewing range changing direction (vehicle width direction and In the vehicle vertical direction). As a result, the control device 18 changes the position of the partial image 32 cut out in the direction operated by the operation unit 16 from the position of the current partial image 32 of the captured image 30 and displays it on the monitor 14.

However, when only the partial image 32 cut out in accordance with the change in the viewing range is displayed when changing the viewing range, it is difficult to know where the cut image is cut out and displayed with respect to the entire captured image 30. Clarification of the cutting range is desired.

Therefore, in the present embodiment, when the change of the viewing range is instructed by the operation unit 16, a wide range image wider than the partial image 32 displayed on the monitor 14 is displayed on the monitor 14 and a portion in the wide range image is displayed. A range designation image representing a range corresponding to the image 32 is displayed.

Specifically, when a change in the viewing range is instructed by the operation unit 16, as shown in FIG. 4, the entire captured image 30 is displayed as an example of a wide range image, and a cut-out partial image 32 in the captured image 30 is displayed. The image 34 for visual recognition is displayed by displaying the corresponding frame image 36. Thereby, the cutout range of the actual captured image 30 can be clarified, and it can be easily recognized where the captured image 30 is cut out and displayed. FIG. 4 is a diagram illustrating an example of the visual image 34 when the change of the visual recognition range is instructed. Also, the solid line partial image 32 and the frame image 36 in FIG. 4 indicate before the change of the viewing range, and the dotted line indicates after the change of the viewing range.

When the instruction to change the viewing range is completed, a partial image 32 at a position corresponding to the frame image 36 moved in the direction instructed by the operation unit 16 is cut out, and as shown in FIG. Is displayed on the monitor 14. It should be noted that the end of the instruction to change the viewing range is an instruction to change the viewing range when there is no operation on the operation unit 16 for a predetermined time and when at least one of the instruction end is instructed by the operation unit 16. You may judge it to be over. For example, it may be determined whether or not a re-operation (for example, operating the left switch 16L or the right switch 16R again) instructing the change of the viewing range has been performed by the operation unit 16. Or you may determine whether the time when operation to the operation part 16 is not performed passed predetermined time. FIG. 5 is a diagram illustrating an example of the visual image 34 after the visual range is changed.

When the change of the viewing range is instructed and the captured image 30 is displayed from the partial image 32, the display range is gradually increased from the range of the currently displayed partial image 32 so as to fit the display size. A reduced visual image 34 may be displayed. For example, after the wide-range image 38 shown by the alternate long and short dash line shown in FIG. 6 is reduced and displayed as the visual image 34, the entire captured image 30 is reduced and displayed as the visual image 34, thereby displaying in a stepwise manner. May be widened. Accordingly, it is possible to give a visual effect of zooming out when changing the visual image 34 displayed from the partial image to the wide area image. FIG. 6 is a diagram for explaining an example of widening the display range in stages when changing the viewing range.

Further, when the change of the viewing range is finished, the viewing image 34 in which the display range is narrowed stepwise from the range of the captured image 30 to the range of the partial image 32 may be displayed. For example, after the wide range image 38 indicated by the one-dot chain line in FIG. 7 is reduced and displayed as the visual image 34, the selected partial image 32 is displayed as the visual image 34, thereby narrowing the display range in stages. May be. Accordingly, it is possible to give a visual effect such as zooming in when changing the visual image 34 displayed from the wide range image to the partial image. FIG. 7 is a diagram for explaining an example of narrowing the range to be displayed step by step when the change of the viewing range is finished.

Subsequently, a specific process performed by the control device 18 of the vehicle visual recognition device 10 according to the present embodiment configured as described above will be described. FIG. 8 is a flowchart illustrating an example of a flow of processing performed by the control device 18 of the vehicle visual recognition device 10 according to the present embodiment. Note that the processing in FIG. 8 will be described as starting when an ignition switch (not shown) is turned on and ending when the ignition switch is turned off. 8 is performed by the CPU 18A developing and executing the vehicle visual control program stored in the ROM 18B on the RAM 18C.

First, in step 100, the CPU 18A starts acquiring a photographed image photographed by the rear side camera 12, and proceeds to step 102. That is, the imaging results of the rear side camera 12 are sequentially acquired.

In step 102, the CPU 18A cuts out the partial image 32 from the captured image 30, and proceeds to step 104. Note that the partial image at this time may be a partial image at a predetermined default position in the photographed image, or may be a partial image at a position designated last time before the IG is turned off.

In Step 104, the CPU 18A converts the cut-out partial image into a mirror image, and displays it as a visual image 34 on the monitor 14 as shown in FIG. In the present embodiment, the mirror image is converted after being cut out, but may be cut out after the mirror image conversion.

In step 106, the CPU 18A determines whether or not the operating unit 16 has been operated to instruct a change in the viewing range. Wait until the determination is affirmed and proceed to Step 108

In step 108, the CPU 18 </ b> A performs control so that the captured image 30 in a wider range than the partial image 32 is subjected to mirror image conversion and reduction and displayed on the monitor 14 together with the frame image 36 corresponding to the partial image 32, and the process proceeds to step 110. That is, as shown in FIG. 4, since the frame image 36 corresponding to the captured image 30 and the partial image 32 is displayed, it is possible to easily recognize which part of the captured image 30 is cut out.

In step 110, the CPU 18 </ b> A performs control so that the frame image 36 is moved and displayed on the monitor 14 in accordance with an instruction from the operation unit 16, and the process proceeds to step 112.

In step 112, the CPU 18A determines whether or not the instruction to change the viewing range has ended. As described above, this determination may be made as to whether or not a re-operation (for example, operating the left switch 16L or the right switch 16R again) instructing the change of the viewing range has been performed. Or you may determine whether the time when operation to the operation part 16 is not performed passed predetermined time. If the determination is negative, the process returns to step 110 to repeat the above-described processing, and if the determination is affirmative, the process proceeds to step 114.

In step 114, the CPU 18A controls to cut out the partial image 32 corresponding to the changed image (the moved frame image 36) from the photographed image 30, converts it into a mirror image, and displays it on the monitor 14. Then, the process returns to step 106 and returns to the above. Repeat the process.

By performing the control by the control device 18 in this way, when changing the visual image, the captured image 30 as the wide area image is displayed, and the frame image 36 corresponding to the partial image 32 is displayed, and the actual captured image is displayed. The cutout range of the image 30 can be clarified. Therefore, it is possible to easily recognize where the captured image 30 is cut out and displayed.

In the above-described embodiment, the example in which the frame image 36 corresponding to the partial image 32 to be cut out in the captured image 30 is displayed has been described. However, the range designation image representing the range corresponding to the partial image 32 is not limited thereto. It is not a thing. Since the range of the partial image 32 only needs to be known, for example, only the corner portion of the portion corresponding to the partial image 32 or only a part of the frame may be displayed as the range designation image.

In addition, although the process performed by the control device 18 in the above embodiment has been described as a software process, it is not limited to this. For example, the processing may be performed by hardware, or may be processing that combines both hardware and software.

Further, the processing performed by the control device 18 in the above embodiment may be stored and distributed as a program in a storage medium.

Furthermore, the present invention is not limited to the above, and it is needless to say that various modifications can be made without departing from the gist of the present invention.

The entire disclosure of Japanese Patent Application No. 2016-082399 filed on April 15, 2016 is incorporated herein by reference.

Claims

A display unit for displaying a visual image for visually recognizing the periphery of the vehicle;
An instruction unit for instructing a change in a viewing range of the viewing image;
When a partial image of a part of a captured image obtained by photographing the periphery of the vehicle is displayed as the visual image, and when the instruction unit is instructed to change the visual range of the visual image, the partial image is more than the partial image. A control unit for controlling the display unit to display a wide range image in a wide range and to display a range designation image representing a range corresponding to the partial image in the wide range image;
A vehicular visual recognition device.
The control unit moves the range designation image in accordance with an instruction from the instruction unit, and displays the partial image corresponding to the range designation image after movement as the visual image after the instruction from the instruction unit is completed. The vehicle visual recognition device according to claim 1, wherein the display unit is controlled as described above.
The vehicular visual recognition device according to claim 1 or 2, wherein the wide-range image is the entire captured image.
The control unit according to any one of claims 1 to 3, wherein when displaying the wide range image, the control unit controls the display unit to display the wide range image by gradually increasing a display range from the range of the partial image. The vehicle visual recognition device according to any one of the preceding claims.
The control unit, when displaying the partial image corresponding to the range-designated image after movement as the visual image after the instruction of the instruction unit is completed, displays a range to be displayed from the range of the wide-range image to the partial image. The vehicular visual recognition device according to claim 2, wherein the display unit is controlled so as to display the visual image while being narrowed step by step to the range.
The control unit determines that the instruction of the instruction unit is ended when at least one of the instruction by the instruction unit is not within a predetermined time and the instruction completion is instructed by the instruction unit. The vehicular visual recognition device according to claim 2.