JP2020078084A - Device for controlling display for vehicle, system for display for vehicle, method for controlling display for vehicle, and program - Google Patents

Abstract

To display an appropriate amount of information for a driver.SOLUTION: A device for controlling display for a vehicle comprises: a display video data generation unit 31 that acquires photographed video data from a rear camera 2 that photographs the rear of a vehicle and generates display video data to be displayed on a rear view monitor 3 that displays a video of the rear of the vehicle; a range setting unit 35 that sets, to the display video data, a first range, and second ranges arranged on both sides of the first range of the display video data and located on both sides of the display video data; a video processing unit 36 that extracts a feature point from the video data in the second ranges, the ranges set by the range setting unit 35, and performs information amount reduction processing of reducing the amount of information available to a driver; a video processing unit 36 that performs processing of displaying the feature point to be superimposed or by replacing with the video data in the second ranges; and a display control unit 40 that displays, on the rear view monitor 3, the display video data in which the information amount reduction processing is performed for the second ranges.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle display control device, a vehicle display system, a vehicle display control method, and a program.

  A technique is known in which a rear camera captures an image of a rear peripheral region of a vehicle and displays it on a rear view monitor, instead of a conventional optical rearview mirror (see, for example, Patent Document 1).

JP2012-170127A

  The rear camera can capture a wider area than the area displayed on the rearview mirror. When a range wider than the range displayed on the rearview mirror is displayed on the rearview monitor, the amount of information on the situation around the vehicle obtained by the driver from the rearview monitor is larger than the amount of information obtained from the rearview mirror. However, the amount of information that a driver can appropriately recognize when driving a vehicle is limited. For this reason, if the amount of information obtained is too large, it may be difficult for the driver to properly recognize the obtained information, and since it takes time for recognition, the time for gazing at the rear view monitor It will be long. Therefore, it is desired that the rear view monitor displays an appropriate amount of information that the driver can appropriately recognize.

  The present invention has been made in view of the above, and an object thereof is to display an appropriate amount of information for a driver.

  In order to solve the above-mentioned problems and to achieve the object, a vehicle display control device according to the present invention obtains captured image data from a rear camera that captures the rear of a vehicle and displays the rear image of the vehicle. A display image data generating unit for generating display image data to be displayed on the display device, a first range for the display image data, and a first range and both sides of the first range. A range setting unit that sets a second range located on both sides, and a feature point is extracted from the image data of the second range in which the range is set by the range setting unit, and a driver can be obtained. As an information amount reduction process for reducing the amount of information, a video processing unit that performs a process of displaying a feature point by superimposing or replacing it on the video data of the second range, and the information amount reduction process for the second range. And a display control unit for displaying the performed display video data on the display device.

  A vehicular display system according to the present invention includes the vehicular display control device, and at least one of the display device and the rear camera having a display width capable of displaying at least the first range and the second range. It is characterized by being provided.

  A display control method for a vehicle according to the present invention acquires captured video data from a rear camera that captures the rear of a vehicle, and generates display video data to be displayed on a display device that displays the rear video of the vehicle. A step of generating video data, extracting feature points from the video data of the second range, which is arranged on both sides of the first range of the display video data and located on both sides of the display video data, and operates As an information amount reduction process for reducing the amount of information that a person can obtain, a video processing step of performing a process of displaying a feature point by superimposing or replacing the video data in the second range, and the information for the second range. A display control step of causing the display device to display the display video data subjected to the amount reduction processing.

  A program according to the present invention acquires captured video data from a rear camera that captures the rear of a vehicle and generates display video data to be displayed on a display device that displays the rear video of the vehicle. And a characteristic point is extracted from the second range of video data located on both sides of the first range of the display video data and located in the second range located on both sides of the display video data. As an information amount reduction process for reducing the amount of information obtained by the driver, a video processing step of performing a process of displaying a feature point by superimposing or replacing the video data on the second range, and for the second range A display control step of displaying the display image data on which the information amount reduction processing has been performed on the display device is executed by a computer operating as a vehicle display control device.

  According to the present invention, it is possible to display an appropriate amount of information for the driver.

FIG. 1 is a schematic diagram showing a configuration example of a vehicle display system according to the first embodiment. FIG. 2 is a block diagram showing a configuration example of the vehicle display system according to the first embodiment. FIG. 3 is a diagram showing an example of video data captured by the rear camera of the vehicle display system according to the first embodiment. FIG. 4 is a diagram showing an example of video data captured by the rear camera of the vehicle display system according to the first embodiment and a video displayed on the rear view monitor. FIG. 5 is a schematic view for explaining the rear view monitor of the vehicle display system according to the first embodiment and a conventional optical rearview mirror in comparison. FIG. 6 is a schematic diagram showing another example of the configuration example of the vehicle display system according to the first embodiment. FIG. 7 is a diagram showing an example of an image displayed on the rear view monitor of the vehicular display system according to the first embodiment. FIG. 8 is a diagram illustrating a first range and a second range of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. FIG. 9 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. FIG. 10 is a flowchart showing the flow of processing in the vehicle display system according to the first embodiment. FIG. 11 is a schematic diagram showing a configuration example of the vehicle display system according to the second embodiment. FIG. 12 is a diagram showing an example of an image displayed on the rear view monitor of the vehicle display system according to the second embodiment. FIG. 13 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the second embodiment. FIG. 14 is a schematic diagram showing a configuration example of a vehicle display system according to the third embodiment. FIG. 15: is a figure which shows an example of the video displayed on the rear view monitor of the display system for vehicles which concerns on 3rd embodiment. FIG. 16 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment. FIG. 17 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment. FIG. 18 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment. FIG. 19 is a diagram showing an example of a second range ratio table in the vehicle display system according to the fourth embodiment. FIG. 20 is a flowchart showing the flow of processing in the vehicle display system according to the fourth embodiment. FIG. 21 is a diagram showing an example of an image displayed on the rear view monitor of the vehicle display system according to the fourth embodiment. FIG. 22 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the fourth embodiment. FIG. 23 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the fourth embodiment. FIG. 24 is a diagram showing an example of a reduction rate table in the vehicle display system according to the fifth embodiment. FIG. 25 is a flowchart showing the flow of processing in the vehicle display system according to the fifth embodiment. FIG. 26 is a diagram showing an example of an image displayed on the rear view monitor of the vehicle display system according to the fifth embodiment. FIG. 27 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the fifth embodiment. FIG. 28 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the fifth embodiment.

Embodiments of a vehicle display control device 10, a vehicle display system 1, a vehicle display control method, and a program according to the present invention will be described in detail below with reference to the accompanying drawings. The present invention is not limited to the embodiments described below.
[First embodiment]
The vehicle display system 1 is mounted on a vehicle and displays a video image of the rear of the vehicle. FIG. 1 is a schematic diagram showing a configuration example of a vehicle display system according to the first embodiment. FIG. 2 is a block diagram showing a configuration example of the vehicle display system according to the first embodiment. The rear side of the vehicle includes the rear side in the traveling direction and the side rear side in the vehicle width direction. In this embodiment, the rear side will be described, but the present invention is also applicable to the side rear side.

  As shown in FIGS. 1 and 2, the vehicular display system 1 includes a rear camera 2, a rear view monitor 3, and a vehicular display control device 10.

  The rear camera 2 is arranged at the rear of the vehicle and takes an image of the rear of the vehicle. FIG. 3 is a diagram showing an example of video data captured by the rear camera of the vehicle display system according to the first embodiment. FIG. 4 is a diagram showing an example of video data captured by the rear camera of the vehicle display system according to the first embodiment and a video displayed on the rear view monitor. As shown in FIGS. 3 and 4, the rear camera 2 captures a range including the range confirmed by the rear view monitor 3. In other words, the rear camera 2 is capturing an image including a range that is not displayed on the rear view monitor 3. The rear camera 2 has a horizontal angle of view of, for example, 90 to 180 ° and a vertical angle of view of, for example, 45 to 90 °. In this way, the rear camera 2 can capture an image in a wider range than the range displayed on the rear view monitor 3. Therefore, the image captured by the rear camera 2 has a range in which the driver of the vehicle can appropriately recognize the rear using the rear view monitor 3 at the cutout portion 33 of the control unit 30 of the vehicle display control device 10. It is cut out and displayed on the rear view monitor 3. The rear camera 2 outputs the captured video data 100 to the video data acquisition unit 32 of the control unit 30 of the vehicular display control device 10.

  The rear view monitor 3 is, for example, an electronic room mirror. When the rear view monitor 3 is used as an electronic room mirror, it does not matter whether or not there is a half mirror for checking the rear by optical reflection. The rear view monitor 3 is a display including a liquid crystal display (LCD: Liquid Crystal Display) or an organic EL (Organic Electro-Luminescence) display, for example.

  The rear view monitor 3 and a conventional optical rearview mirror R will be compared and described with reference to FIG. FIG. 5 is a schematic view for explaining the rear view monitor of the vehicle display system according to the first embodiment and a conventional optical rearview mirror in comparison. The width of the rear view monitor 3 in the vehicle width direction is wider than that of the conventional optical rearview mirror R. In this embodiment, for example, the width in the vehicle width direction is 400 mm and the width in the height direction is 50 mm. On the other hand, the conventional optical rearview mirror R has a width of 200 mm in the vehicle width direction and a width of 50 mm in the height direction, for example.

  The rear view monitor 3 is arranged at a position where the driver can easily see it. In the present embodiment, the rear view monitor 3 is arranged at the upper center of the windshield S in the vehicle width direction as shown in FIG. As shown in FIG. 6, the rear view monitor 3 may be arranged at the upper center of the dashboard D in the vehicle width direction. FIG. 6 is a schematic diagram showing another example of the configuration example of the vehicle display system according to the first embodiment.

  The rear view monitor 3 displays the rear image of the vehicle based on the image signal output from the display control unit 40 of the control unit 30 of the vehicle display control device 10. Specifically, the rear view monitor 3 displays a rear image as shown in FIG. FIG. 7 is a diagram showing an example of an image displayed on the rear view monitor of the vehicular display system according to the first embodiment. The photographed video data 100 shown in FIG. 7 shows a photographed object including a following vehicle, a road, and a roadside tree.

  Returning to FIG. 2, the vehicular display control device 10 includes a storage unit 20 and a control unit 30.

  The storage unit 20 stores data required for various processes in the vehicle display control device 10 and various process results. The storage unit 20 is, for example, a semiconductor memory device such as a RAM (Random Access Memory), a ROM (Read Only Memory), or a flash memory (Flash Memory), or a storage device such as a hard disk, an optical disk, or an external storage device via a network. Is. Alternatively, it may be an external storage device that is wirelessly connected via a communication device (not shown).

  The control unit 30 is, for example, an arithmetic processing device including a CPU (Central Processing Unit) and the like. The control unit 30 includes a display video data generation unit 31, an information acquisition unit 34, a range setting unit 35, a video processing unit 36, and a display control unit 40. The control unit 30 executes the instructions included in the program stored in the storage unit 20.

  The display video data generation unit 31 acquires the captured video data 100 from the rear camera 2 and generates display video data 110 to be displayed on the rear view monitor 3. The display video data generation unit 31 includes a video data acquisition unit 32 and a cutout unit 33.

  The image data acquisition unit 32 acquires an image of the rear of the vehicle. The captured video data 100 acquired by the video data acquisition unit 32 is, for example, video data in which images of 60 frames per second are continuous. In the present embodiment, the video data acquisition unit 32 acquires the captured video data 100 output by the rear camera 2. The video data acquisition unit 32 outputs the acquired captured video data 100 to the cutout unit 33.

  The cutout unit 33 cuts out a range to be displayed on the rear view monitor 3 from the captured video data 100. Which range of the captured video data 100 is to be cut out as the range to be displayed on the rear view monitor 3 is stored in the storage unit 20 in advance. In the present embodiment, the cutout unit 33 cuts out the central portion of the captured video data 100, which is surrounded by a broken line in FIG. 4, as the display video data 110. The cutout unit 33 outputs the cutout display video data 110 to the range setting unit 35.

  The information acquisition unit 34 acquires vehicle speed information for determining a vehicle speed from an ECU (Electronic Control Unit) or a CAN (Control Area Network). Specifically, the information acquisition unit 34 acquires a vehicle speed signal. The information acquisition unit 34 outputs the acquired information to the video processing unit 36.

The range setting unit 35 sets, for the display video data 110, a first range 110A and second ranges 110B arranged on both sides of the first range 110A and located on both sides of the display video data 110. . In the present embodiment, as shown in FIG. 8, the first range 110A is set as a range with the center line L of the display video data 110 as the center axis line. FIG. 8 is a diagram illustrating a first range and a second range of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. In the present embodiment, the width of the first range 110A in the vehicle width direction is 200 mm. The width of the second range 110B in the vehicle width direction is 100 mm. The first range 110A is a range in which the driver can visually recognize the conventional optical rearview mirror R when looking straight ahead. The second range 110B includes a range that cannot be visually recognized when the driver directly looks at the conventional optical rearview mirror R, and a range that can be visually recognized when the viewpoint is shifted or the angle is adjusted, and a range outside thereof. The range setting unit 35 outputs the display video data 110 in which the first range 110A and the second range 110B are set to the video processing unit 36.

  The image processing unit 36 performs the information amount reduction process for the second range 110B of the display image data 110 to generate the display image data 120 with the reduced amount of information and output the display image data 120 to the display control unit 40. The display video data 120 includes a first range 120A in which the amount of information is not reduced and a second range 120B in which the amount of information is reduced.

  The amount of information is the amount of information on the situation around the vehicle obtained by the driver from the image displayed on the rear view monitor 3. The amount of information increases as the display area of the image displayed on the rear view monitor 3 increases. The amount of information increases as the number of objects to be photographed displayed on the rear view monitor 3 increases. The amount of information increases as the number of colors included in the image displayed on the rear view monitor 3 increases. The amount of information increases as the brightness of the image displayed on the rear view monitor 3 increases.

  The amount of information that the driver can appropriately recognize when driving the vehicle is limited, and the higher the vehicle speed, the less information that the driver can appropriately recognize and the narrower the recognition range. It has been known. In addition, the higher the vehicle speed, the shorter the time that the rear view monitor 3 visually checks. More specifically, as the vehicle speed increases, the range in which the driver can appropriately recognize the rear is the range that can be visually recognized by the conventional optical rearview mirror R, in other words, the first range 110A in the display image data 110 is optimal. is there. In other words, when the vehicle speed is slow, it is possible to properly recognize even if the amount of information is larger than the amount of information visually recognized by the conventional optical rearview mirror R.

  Therefore, when the vehicle speed is equal to or higher than the predetermined speed, the image processing unit 36 generates the display image data 120 in which the information amount of the second range 110B is reduced so that the information is required and recognized by the driver. More specifically, when the vehicle speed acquired by the information acquisition unit 34 is equal to or higher than the predetermined speed, the image processing unit 36 reduces the information amount of the second range 110B of the display image data 110 as shown in FIG. 9, for example. The information amount reduction process of generating the generated display video data 120 and outputting it to the display control unit 40 is performed. FIG. 9 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. The amount of information of the display video data 120 is reduced in a range where the driver can recognize the presence or absence of the object to be photographed from the second range 120B.

  The video processing unit 36 outputs the display video data 110 to the display control unit 40 when the vehicle speed is less than the predetermined speed. The video processing unit 36 has a reduction processing unit 37.

  The reduction processing unit 37 performs, as the information amount reduction processing, for example, color information reduction processing for reducing color information and luminance reduction processing for reducing luminance.

  The color information reduction process is a process of generating the display video data 120 in which the color information of the second range 110B of the display video data 110 is reduced and outputting the display video data 120 to the display control unit 40. For example, in the color information reduction processing, the display image data 120 in which the saturation for each RGB of the second range 110B of the display image data 110 is reduced by a predetermined amount or a predetermined rate is generated and output to the display control unit 40. Alternatively, for example, in the color information reduction processing, the display image data 120 in which the saturation of the second range 110B of the display image data 110 is a predetermined amount or a predetermined ratio and is low in monochrome or black and white is generated and output to the display control unit 40. May be.

The brightness reduction process is a process of generating the display video data 120 in which the brightness of the second range 110B of the display video data 110 is reduced and outputting the display video data 120 to the display control unit 40. For example, in the brightness reduction process, the display image data 120 in which the brightness of each pixel in the second range 110B of the display image data 110 is reduced by a predetermined amount or a predetermined rate is generated and output to the display control unit 40. Alternatively, for example, in the brightness reduction process, instead of generating the display video data 120, the backlight of the rear view monitor 3 corresponding to the first range 110A is set to normal brightness, and the backlight of the rear view monitor 3 corresponding to the second range 110B is backlit. A control signal for reducing the light from the normal brightness by a predetermined amount or a predetermined rate may be generated and output to the display control unit 40 together with the display video data 110.

  The reduction processing unit 37 may perform either the color information reduction processing or the luminance reduction processing, or may perform both in combination.

  The display control unit 40 causes the rear view monitor 3 to display the display image data 110 or the display image data 120 output from the image processing unit 36.

  Next, the flow of processing by the control unit 30 will be described with reference to FIG. FIG. 10 is a flowchart showing the flow of processing in the vehicle display system according to the first embodiment.

  The control unit 30 causes the video data acquisition unit 32 to acquire the captured video data 100 (step S11).

  The control unit 30 causes the cutout unit 33 to perform the cutout process (step S12). More specifically, the control unit 30 causes the cutout unit 33 to cut out the range to be displayed on the rear view monitor 3 as the display video data 110 from the captured video data 100.

  The control unit 30 causes the image processing unit 36 to determine whether the vehicle speed is equal to or higher than a predetermined speed (step S13). More specifically, the control unit 30 causes the video processing unit 36 to determine whether the vehicle speed is equal to or higher than a predetermined speed, based on the information acquired by the information acquisition unit 34. In this embodiment, the predetermined speed is, for example, 20 km / h or 40 km / h. The predetermined speed is preferably set such that the amount of information displayed in the second range 110B without reducing the amount of information is within the range of the amount of information that allows the driver to properly recognize the rear side at that speed. This is because, for example, when the traveling speed is less than 20 km / h or 40 km / h, the viewing time of the rear view monitor 3 is longer than that during high-speed traveling, and the information of the second range 110B is often required. This is because when the vehicle is traveling at a traveling speed equal to or higher than the predetermined speed, the viewing time of the rear view monitor 3 is shorter than that when traveling at a speed lower than the predetermined speed, and the information of the second range 110B is less likely to be required.

  When the video processing unit 36 determines that the vehicle speed is not equal to or higher than the predetermined speed (No in step S13), the control unit 30 proceeds to step S15. The control unit 30 causes the video processing unit 36 to output the display video data 110 to the display control unit 40.

  When the video processing unit 36 determines that the vehicle speed is equal to or higher than the predetermined speed (Yes in step S13), the control unit 30 proceeds to step S14.

  The control unit 30 causes the reduction processing unit 37 to perform the information amount reduction processing of the second range 110A of the display video data 110 (step S14). More specifically, the control unit 30 causes the reduction processing unit 37 to reduce the amount of information in the second range 110B of the display video data 110.

  For example, the control unit 30 causes the reduction processing unit 37 to generate the display image data 120 in which the saturation of each of the RGB of the second range 110B of the display image data 110 is reduced and to output it to the display control unit 40.

  Alternatively, for example, the control unit 30 causes the reduction processing unit 37 to generate the display image data 120 in which the second range 110B of the display image data 110 is, for example, a single color or black and white with low saturation and output it to the display control unit 40. May be.

  Alternatively, for example, the control unit 30 may cause the reduction processing unit 37 to generate the display image data 120 in which the brightness of each pixel of the second range 110B of the display image data 110 is reduced and output the display image data 120 to the display control unit 40. ..

  Alternatively, for example, the control unit 30 causes the reduction processing unit 37 to set the backlight of the rear view monitor 3 corresponding to the first range 110A to the normal brightness and set the backlight of the rear view monitor 3 corresponding to the second range 110B to the normal brightness. A control signal for reducing the brightness may be output together with the display video data 110 to the display controller 40.

  The control unit 30 causes the display control unit 40 to display the display video data 110 or the display video data 120 on the rear view monitor 3 (step S15). More specifically, when the vehicle speed is less than the predetermined speed, the control unit 30 causes the display control unit 40 to display the display video data 110 as shown in FIG. 7 on the rear view monitor 3. When the vehicle speed is equal to or higher than the predetermined speed, the control unit 30 causes the display control unit 40 to display the display image data 120 having the reduced information amount on the rear view monitor 3 as shown in FIG.

  The control unit 30 repeats such processing at predetermined intervals such as every frame or every predetermined frame.

  As described above, according to the present embodiment, when the vehicle speed is equal to or higher than the predetermined speed, the rear view monitor 3 displays the display image data 120 in which the amount of information is reduced in the second range 120B. When the vehicle speed is less than the predetermined speed, the rear view monitor 3 displays the display video data 110 whose information amount is not reduced. The rear view monitor 3 displays the display image data 110 or the display image data 120 in an amount of information that can be easily recognized by the driver according to the vehicle speed. As described above, according to the present embodiment, it is possible to display an appropriate amount of information for the driver according to the vehicle speed. As a result, according to this embodiment, the driver can appropriately check the vicinity of the vehicle regardless of the vehicle speed.

  According to this embodiment, when the vehicle speed is equal to or higher than the predetermined speed, the information amount reduction processing is performed on the second range 110B of the display video data 110. In other words, according to this embodiment, the amount of information is not reduced in the first range 110A that can be visually recognized when the driver looks straight at the conventional optical rearview mirror R regardless of the vehicle speed. Therefore, in this embodiment, the rear can be confirmed at any time similarly to the conventional optical rearview mirror R.

According to the present embodiment, in the second range 120B of the display video data 120, the driver can recognize the presence or absence of the object to be photographed, and the driver has a difference in the amount of information between the first range 120A and the second range 120B. The amount of information is reduced to the extent that can be recognized. Therefore, in the present embodiment, even if the amount of information in the second range 120B is reduced, the driver can obtain the information that the driver wants to obtain from the second range 120B as necessary. As a result, the driver can take an appropriate avoidance action as needed.
[Second embodiment]
The vehicle display system 1A according to the present embodiment will be described with reference to FIGS. 11 to 13. FIG. 11 is a schematic diagram showing a configuration example of the vehicle display system according to the second embodiment. FIG. 12 is a diagram showing an example of an image displayed on the rear view monitor of the vehicle display system according to the second embodiment. FIG. 13 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the second embodiment.

  As shown in FIG. 11, the vehicle display system 1A has the same basic configuration as the vehicle display system 1 of the first embodiment. In the following description, the same components as those of the vehicular display system 1 are designated by the same or corresponding symbols, and detailed description thereof will be omitted. The vehicle display system 1A of the present embodiment is different from the vehicle display system 1 of the first embodiment in the control unit 30A of the vehicle display control device 10A.

  The video processing unit 36A includes a reduction processing unit 37A and a feature point extraction unit 38A.

  As the information amount reduction processing, the characteristic point extraction unit 38A extracts the characteristic points of the object to be photographed from the second range 110B of the display image data 110, generates the illustrated display image data 130, and outputs the information amount to the display control unit 40A. Perform reduction processing. The feature point extraction unit 38A uses a known feature point extraction method to extract, for example, a corner from the second range 110B of the display image data 110 as a feature point of the subject. Then, the feature point extraction unit 38A generates the display video data 130 in which the broken lines (see FIG. 12) showing the outline of the object to be photographed are connected by the extracted corners. The display video data 130 includes a first range 130A in which the amount of information is not reduced and a second range 130B in which characteristic points are shown. When the feature points of the object to be photographed are extracted in detail from the display image data 130, the difference in the amount of information from the display image data 110 becomes small, and it may take time to recognize the object to be photographed. On the other hand, if the characteristic points of the object to be photographed are roughly extracted in the display image data 130, the difference in the amount of information from the display image data 110 becomes large, and the object to be photographed may not be recognized correctly. Therefore, the feature point extraction unit 38A sets the threshold value so that the feature points are appropriately extracted. More specifically, the threshold value is set to a value capable of extracting the minimum necessary contour that can recognize the outer shape of the object.

  An example of the display video data 130 will be described with reference to FIG. The display video data 130 shown in FIG. 12 is the display video data 130 generated from the display video data 110 shown in FIG. 7. In the display video data 130, the characteristic points of the following vehicle, the characteristic points of the road and the guardrail, and the characteristic points of the roadside tree are shown by broken lines.

  The feature point extraction unit 38A outputs the generated display video data 130 to the display control unit 40A as display video data.

  As the information amount reduction process, the information amount reduction process of this embodiment may be performed alone or in combination with the information amount reduction process of the first embodiment.

  A case will be described in which the information amount reduction processing according to the present embodiment is independently performed and the display image data 130 from which the characteristic points are extracted is displayed on the rear view monitor 3. More specifically, in step S14 of the flowchart shown in FIG. 10, the control unit 30A causes the feature point extraction unit 38A to display the feature points of the second range 110B of the display video data 110 as shown in FIG. The video data 130 is output to the display control unit 40A. Then, the control unit 30A causes the display control unit 40A to display the display video data 130 on the rear view monitor 3.

  The information amount reduction process of the present embodiment and the information amount reduction process of the first embodiment are performed in combination to superimpose the display image data 120 with reduced information amount and the display image data 130 with feature points extracted. A case of displaying on the rear view monitor 3 will be described. More specifically, in step S14 of the flowchart shown in FIG. 10, the control unit 30A causes the reduction processing unit 37A to generate the display image data 120 in which the information amount of the second range 110B of the display image data 110 is reduced. Then, the control unit 30A causes the feature point extraction unit 38A to generate the display image data 130 in which the feature points of the second range 110B of the display image data 110 are extracted as shown in FIG. Then, the control unit 30A causes the feature point extraction unit 38A to display the display image data 140 in which the display image data 120 and the display image data 130 with the reduced amount of information are superimposed, as shown in FIG. To output. The display video data 140 includes a first range 140A in which the amount of information is not reduced, and a second range 140B in which color information or brightness is reduced and feature points are shown. Then, the control unit 30A causes the display control unit 40A to display the display video data 140 on the rear view monitor 3.

  As described above, according to the present embodiment, when the vehicle speed is equal to or higher than the predetermined speed, the rear view monitor 3 has a reduced amount of information in the second range 130B, and the characteristic points of the second range 110B of the display video data 110. The display video data 130 indicated by a broken line is displayed. When the vehicle speed is less than the predetermined speed, the rear view monitor 3 displays the display video data 110 whose information amount is not reduced. The rear view monitor 3 displays the display video data 110 or the display video data 130 in an amount of information that can be easily recognized by the driver according to the vehicle speed. As described above, according to the present embodiment, it is possible to display an appropriate amount of information for the driver. As a result, according to this embodiment, the driver can appropriately check the vicinity of the vehicle regardless of the vehicle speed.

Further, according to the present embodiment, when the vehicle speed is equal to or higher than the predetermined speed, the display image data 120 in which the information amount of the second range 110B of the display image data 110 is reduced and the second range 110B of the display image data 110 are displayed. Display image data 140, which is superimposed with the display image data 130 in which the characteristic points are extracted, is displayed on the rear view monitor 3. As a result, according to the present embodiment, it is possible to easily recognize the object to be photographed even if the amount of information is reduced. Moreover, according to the present embodiment, since the display image data 140 shows the characteristic points representing the outline of the object to be photographed, the driver can easily recognize the presence or absence of the object.
[Third embodiment]
The vehicle display system 1B according to the present embodiment will be described with reference to FIGS. 14 to 18. FIG. 14 is a schematic diagram showing a configuration example of a vehicle display system according to the third embodiment. FIG. 15: is a figure which shows an example of the video displayed on the rear view monitor of the display system for vehicles which concerns on 3rd embodiment. FIG. 16 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment. FIG. 17 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment. FIG. 18 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment.

  As shown in FIG. 14, the vehicle display system 1B of the present embodiment has a recognition dictionary storage unit 4B and the configuration of the control unit 30B of the vehicle display control device 10B is the vehicle display system of the second embodiment. Different from 1A.

  The recognition dictionary storage unit 4B stores, for example, a dictionary capable of collating patterns such as shapes, sizes, and colors of objects including four-wheeled vehicles, two-wheeled vehicles, and people. The recognition dictionary storage unit 4B is, for example, a semiconductor memory device such as a RAM, a ROM, a flash memory, or a storage device such as a hard disk, an optical disk, or an external storage device via a network.

  The video processing unit 36B has a reduction processing unit 37B, a feature point extraction unit 38B, and an object recognition unit 39B.

  The feature point extraction unit 38B performs the same processing as the feature point extraction unit 38A of the second embodiment. The feature point extraction unit 38B outputs the display image data 130 in which the feature points shown in FIG. 12 are extracted to the object recognition unit 39B.

  The object recognition unit 39B replaces an object existing in the second range 130B of the display video data 130 with an icon (display indicating a vehicle) M or generates display video data in which the icon M is superimposed on the object as the information amount reduction processing. Processing for outputting to the display control unit 40B is performed. In this embodiment, the object recognition unit 39B recognizes a vehicle as an object. In the present embodiment, the icon M is a ring. The icon M may have another shape such as a drawing of a vehicle. More specifically, the object recognition unit 39B performs pattern matching on the second range 130B of the display video data 130 using the recognition dictionary stored in the recognition dictionary storage unit 4B, and detects the presence of an object. Then, the object recognition unit 39 replaces the object with the icon M or generates display video data in which the icon M is superimposed on the object and outputs the display image data to the display control unit 40B. The object recognition unit 39B performs pattern matching on the display image data 130 whose information amount is reduced as compared with the display image data 110, so that the load and time required for the processing can be reduced.

  The information amount reduction process may be performed by the information amount reduction process of this embodiment alone, or may be performed by appropriately combining it with the information amount reduction process of the first embodiment and the information amount reduction process of the second embodiment. ..

  A case will be described in which the information amount reduction processing according to the present embodiment is independently performed to display only the icon M. More specifically, in step S14 of the flowchart shown in FIG. 10, the control unit 30B causes the feature point extraction unit 38B to extract the feature points in the second range 110B of the display video data 110 and generate the display video data 130. Then, the control unit 30B causes the object recognition unit 39B to recognize an object in the second range 130B of the display video data 130. Then, the control unit 30B causes the object recognition unit 39B to replace the second range 130B of the display image data 130 with the image in which the icon M is displayed at the position corresponding to the object, as shown in FIG. Is generated and output to the display control unit 40B. The display video data 200 includes a first range 200A in which the amount of information is not reduced and a second range 200B in which the icon M is displayed. Then, the control unit 30B causes the display control unit 40B to display the display video data 200 on the rear view monitor 3.

  A case will be described in which the information amount reduction processing according to the present embodiment and the information amount reduction processing according to the first embodiment are performed in combination, and the icon M is superimposed and displayed on the display video data 120 with the reduced information amount. More specifically, in step S14 of the flowchart shown in FIG. 10, the control unit 30B causes the reduction processing unit 37 to generate the display image data 120 in which the information amount of the second range 110B of the display image data 110 is reduced. Then, the control unit 30B causes the feature point extraction unit 38B to extract the feature points in the second range 110B of the display video data 110 and generate the display video data 130. Then, the control unit 30B causes the object recognition unit 39B to recognize the object in the second range 130B of the display video data 130 from which the feature points are extracted. Then, the control unit 30B causes the object recognition unit 39B to generate the display image data 210 in which the icon M is superimposed on the second range 120B of the display image data 120 with the reduced amount of information as shown in FIG. The display controller 40B is caused to output. The display video data 210 includes a first range 210A in which the amount of information is not reduced and a second range 210B in which the color information or the luminance is reduced and the icon M is displayed in a superimposed manner. Then, the control unit 30B causes the display control unit 40B to display the display video data 210 on the rear view monitor 3.

  A case will be described in which the information amount reduction processing of the present embodiment and the information amount reduction processing of the second embodiment are performed in combination, and the feature points and the icons M are displayed in a superimposed manner. More specifically, in step S14 of the flowchart shown in FIG. 10, the control unit 30B causes the feature point extraction unit 38B to extract the feature points in the second range 110B of the display video data 110 and generate the display video data 130. Then, the control unit 30B causes the object recognition unit 39B to recognize an object in the second range 130B of the display video data 130. Then, the control unit 30B causes the object recognition unit 39B to generate the display image data 220 in which the icon M is superimposed on the second range 130B of the display image data 130 as shown in FIG. 17, and outputs it to the display control unit 40B. Let The display video data 220 includes a first range 220A in which the amount of information is not reduced and a second range 220B in which the feature points and the icon M are displayed in a superimposed manner. Then, the control unit 30B causes the display control unit 40B to display the display video data 220 on the rear view monitor 3.

  The information amount reduction process of this embodiment and the information amount reduction process of the first and second embodiments are performed in combination to superimpose the feature point and the icon M on the display video data 120 with the reduced information amount. It may be displayed. More specifically, in step S14 of the flowchart shown in FIG. 10, the control unit 30B causes the reduction processing unit 37B to generate the display image data 120 in which the information amount of the second range 110B of the display image data 110 is reduced. Then, the control unit 30B causes the feature point extraction unit 38B to extract the feature points in the second range 110B of the display video data 110 and generate the display video data 130. Then, the control unit 30B causes the object recognition unit 39B to recognize an object in the second range 130B of the display video data 130. Then, the control unit 30B causes the object recognition unit 39B to generate the display image data 230 in which the display image data 120, the display image data 130, and the icon M are superimposed, as shown in FIG. 18, and cause the display control unit 40B. To output. The display video data 230 includes a first range 230A in which the amount of information is not reduced and a second range 230B in which the color information or the luminance is reduced and the feature point and the icon M are displayed in a superimposed manner. Then, the control unit 30B causes the display control unit 40B to display the display video data 230 on the rear view monitor 3.

As described above, according to the present embodiment, when the vehicle speed is equal to or higher than the predetermined speed, the display image data 200 or the display image data 210 or the display image data 210 in which the object in the second range 110B of the display image data 110 is indicated by the icon M is displayed. The video data 220 or the display video data 230 is displayed on the rear view monitor 3. Accordingly, when the vehicle speed is equal to or higher than the predetermined speed, the rear view monitor 3 displays the second range 200B, the second range 210B, the second range 220B, or the second range 230B on the display video data 200 or the display image data 200 in which the icon M is displayed. The video data 210, the display video data 220, or the display video data 230 is displayed. Therefore, in the present embodiment, it is possible to display the objects in the second range 200B, the second range 210B, the second range 220B, or the second range 230B in which the amount of information is reduced, in a more easily recognizable manner. As a result, in the present embodiment, the object to be photographed can be easily recognized even if the color information or the brightness is reduced. As described above, according to the present embodiment, it is possible to display an appropriate amount of information for the driver according to the vehicle speed. As a result, according to the present embodiment, it is possible to appropriately confirm the vicinity of the vehicle.
[Fourth Embodiment]
The vehicle display system according to the present embodiment will be described with reference to FIGS. 19 to 23. FIG. 19 is a diagram showing an example of a second range ratio table in the vehicle display system according to the fourth embodiment. FIG. 20 is a flowchart showing the flow of processing in the vehicle display system according to the fourth embodiment. FIG. 21 is a diagram showing an example of an image displayed on the rear view monitor of the vehicle display system according to the fourth embodiment. FIG. 22 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the fourth embodiment. FIG. 23 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the fourth embodiment.

  The vehicle display system of this embodiment is different from the vehicle display system 1 of the first embodiment in the processing in the control unit 30. Other configurations are the same as those of the vehicle display system 1 of the first embodiment.

  The range setting unit 35 sets the first range 110A and the second range 110B of the display video data 110 according to the vehicle speed. The range setting unit 35 sets the first range 110A to be wider as the vehicle speed is lower, based on the vehicle speed information acquired by the information acquisition unit 34. For example, the range setting unit 35 may set the ratio of the second range 110B based on the second range ratio table stored in the storage unit 20 in advance.

  The second range ratio table shows the relationship between the vehicle speed and the ratio of the second range 110B. In the present embodiment, the ratio of the second range 110B is 0% when the width of the second range 110B of the display image data 110 in the vehicle width direction is 0 mm, and 100% when the width of the vehicle width direction is 100 mm. .. As the second range 110B becomes smaller, the first range 110A expands outward in the vehicle width direction. More specifically, when the proportion of the second range 110B is 0%, the width of the first range 110A in the vehicle width direction is 400 mm. When the ratio of the second range 110B is 100%, the width of the first range 110A in the vehicle width direction is 200 mm.

  An example of the second range ratio table will be described with reference to FIG. The second range ratio table shown in FIG. 19 defines a relationship in which the vehicle speed of two patterns of Example 1 and Example 2 and the ratio of the second range 110B change linearly. More specifically, in the pattern of Example 1, when the vehicle speed is between 0 km / h and 60 km / h, the ratio of the second range 110B changes linearly between 0% and 100%, and the vehicle speed is 60 km / h. In the above, the ratio of the second range 110B is constant at 100%. In the pattern of Example 2, when the vehicle speed is between 20 km / h and 80 km / h, the ratio of the second range 110B changes linearly between 0% and 100%, and when the vehicle speed is 80 km / h or more, The ratio of the two ranges 110B is constant at 100%.

  In the second range ratio table, the vehicle speed and the ratio of the second range 110B may change stepwise. Alternatively, in the second range ratio table, the vehicle speed and the ratio of the second range 110B may change non-linearly.

  The range setting unit 35 selects the pattern of Example 1 or the pattern of Example 2 of the second range ratio table shown in FIG. 19 according to, for example, the traveling state of the vehicle or the characteristics of the driver, and the vehicle speed of the selected pattern. The first range 110A and the second range 110B are set according to the vehicle speed based on the relationship between the ratio of the second range 110B and the ratio of the second range 110B.

  The range setting unit 35 may change the change in the ratio of the second range 110B between deceleration and acceleration. For example, the range setting unit 35 selects the pattern of Example 1 of the second range ratio table shown in FIG. 19 during deceleration and the pattern of Example 2 of the second range ratio table shown in FIG. 19 during acceleration. However, the first range 110A and the second range 110B may be set according to the vehicle speed.

  The flow of processing by the control unit 30 will be described with reference to FIG.

  The control unit 30 causes the video data acquisition unit 32 to acquire the captured video data 100 (step S21). The step S21 performs the same process as the step S11.

  The control unit 30 causes the cutout unit 33 to perform the cutout process (step S22). The step S22 performs the same process as the step S12.

  The control unit 30 causes the range setting unit 35 to set the first range 110A and the second range 110B of the display video data 110 according to the vehicle speed (step S23). More specifically, the control unit 30 causes the range setting unit 35 to acquire the ratio of the second range 110B corresponding to the vehicle speed based on the second range ratio table and the information acquired by the information acquisition unit 34. Then, the control unit 30 causes the range setting unit 35 to set the second range 110B of the display video data 110 to a ratio of the acquired second range 110B.

  The control unit 30 causes the video processing unit 36 to perform the information amount reduction processing of the second range 110B of the display video data 110 (step S24). The step S24 performs the same process as the step S14.

  The control unit 30 causes the display control unit 40 to display the display video data 110 on the rear view monitor 3 (step S25). The step S25 performs the same process as the step S15.

  Specifically, when the range setting unit 35 sets the first range 110A and the second range 110B of the display image data 110 according to the vehicle speed, the pattern of Example 1 of the second range ratio table shown in FIG. The case of using will be described.

  For example, when the vehicle speed is 0 km / h, in step S23, the control unit 30 causes the range setting unit 35 to set the ratio of the second range 110B of the display video data 110 to 0%. Then, in step S25, the control unit 30 causes the display control unit 40 to display the display video data 300 as shown in FIG. 21 on the rear view monitor 3. As a result, the rear view monitor 3 displays the display video data 300 that does not include the second range but includes only the first range 300A. In other words, the display video data 300 displayed on the rear view monitor 3 has the information amount not reduced.

  For example, when the vehicle speed is 40 km / h, in step S23, the control unit 30 causes the range setting unit 35 to set the ratio of the second range 110B of the display video data 110 to 60%. Then, in step S24, the control unit 30 causes the reduction processing unit 37 to perform the information amount reduction process of the second range 110B in which the ratio is set to 60%. Then, in step S25, the control unit 30 causes the display control unit 40 to display the display video data 310 as shown in FIG. 22 on the rear view monitor 3. As a result, the rear view monitor 3 displays the display image data 310 including the first range 310A wider than the conventional optical rearview mirror R and the second range 310B whose ratio is set to 60%.

  For example, when the vehicle speed is 80 km / h, in step S23, the control unit 30 causes the range setting unit 35 to set the ratio of the second range 110B of the display video data 110 to 100%. Then, in step S24, the control unit 30 causes the reduction processing unit 37 to perform the information amount reduction process of the second range 110B in which the ratio is set to 100%. Then, in step S25, the control unit 30 causes the display control unit 40 to display the display video data 320 as shown in FIG. 23 on the rear view monitor 3. As a result, the rear view monitor 3 displays the display image data 320 including the first range 320A having the same width as that of the conventional optical rearview mirror R and the second range 320B in which the ratio is set to 100%. There is.

As described above, in the present embodiment, the ratio of the second range 110B of the display image data 110 is changed and set according to the vehicle speed. Then, the display image data 310 or the display image data 320 in which the amount of information in the second range 110B in which the ratio is set is reduced is displayed on the rear view monitor 3. In the present embodiment, the proportion of the second range 110B increases as the vehicle speed increases. When the vehicle speed is 0 km / h, the rear view monitor 3 displays the display video data 300 including only the first range 300A. When the vehicle speed is faster than 0 km / h, the rear view monitor 3 displays the display image data 310 or the display image data 320 with the reduced amount of information in the second range 310B or the second range 320B. Therefore, the rear view monitor 3 displays the display image data 300, the display image data 310, or the display image data 320 in an amount of information that can be easily recognized by the driver according to the vehicle speed. As described above, according to the present embodiment, it is possible to provide the driver with an appropriate amount of information for the driver to recognize and judge according to the vehicle speed. In this way, according to the present embodiment, the amount of information that the driver can obtain is prevented from becoming too large, so that the burden on the driver can be reduced. According to this embodiment, the driver can appropriately confirm the vicinity of the vehicle.
[Fifth Embodiment]
The vehicle display system according to the present embodiment will be described with reference to FIGS. 24 to 28. FIG. 24 is a diagram showing an example of a reduction rate table in the vehicle display system according to the fifth embodiment. FIG. 25 is a flowchart showing the flow of processing in the vehicle display system according to the fifth embodiment. FIG. 26 is a diagram showing an example of an image displayed on the rear view monitor of the vehicle display system according to the fifth embodiment. FIG. 27 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the fifth embodiment. FIG. 28 is a diagram showing another example of an image displayed on the rear view monitor of the vehicle display system according to the fifth embodiment.

  The vehicle display system of this embodiment is different from the vehicle display system of the fourth embodiment in the processing in the control unit 30. Other configurations are similar to those of the vehicle display system of the fourth embodiment.

  The reduction processing unit 37 sets the reduction rate of the information amount in the second range 110B of the display video data 110 according to the vehicle speed when performing the information amount reduction process of the first embodiment. Based on the vehicle speed information acquired by the information acquisition unit 34, the reduction processing unit 37 performs the information amount reduction process in which the degree of information amount reduction with respect to the video data in the second range 110B increases as the vehicle speed increases. The reduction processing unit 37 may set the reduction rate of the information amount of the second range 110B based on the reduction rate table stored in the storage unit 20 in advance.

  The reduction rate table shows the relationship between the vehicle speed and the reduction rate of the information amount in the second range 110B. In the present embodiment, the reduction rate of the information amount in the second range 110B is 0% when the information amount is not reduced, and 100% when the information amount is hidden by zero.

  An example of the reduction rate table will be described with reference to FIG. In the reduction rate table shown in FIG. 24, the relationship in which the vehicle speed of two patterns of Example 1 and Example 2 and the reduction rate of the information amount in the second range 110B change linearly, and the relationship that changes stepwise as Example 3 Are defined. More specifically, in the pattern of Example 1, when the vehicle speed is between 0 km / h and 60 km / h, the reduction rate of the information amount in the second range 110B changes linearly between 0% and 100%, Is 60 km / h or more, the reduction rate of the information amount in the second range 110B is constant at 100%. In the pattern of Example 2, between the vehicle speeds of 20 km / h and 80 km / h, the reduction rate of the information amount in the second range 110B changes linearly between 0% and 100%, and the vehicle speed is 80 km / h. In the above, the reduction rate of the amount of information in the second range 110B is constant at 100%. In the pattern of Example 3, when the vehicle speed is between 0 km / h and 30 km / h, the reduction rate of the information amount in the second range 110B is 0%, and when the vehicle speed is between 30 km / h and 80 km / h, The reduction rate of the information amount in the second range 110B is 50%, and the reduction rate of the information amount in the second range 110B is constant at 100% when the vehicle speed is 80 km / h or more.

  In the reduction rate table, the vehicle speed and the reduction rate of the information amount in the second range 110B may change stepwise. Alternatively, in the reduction rate table, the vehicle speed and the reduction rate of the information amount in the second range 110B may change non-linearly.

  The reduction processing unit 37 selects the pattern of Example 1 or the pattern of Example 2 of the reduction rate table shown in FIG. 24, for example, according to the traveling state of the vehicle, the characteristics of the driver, and the like, and the vehicle speed and the first The reduction rate of the information amount in the second range 110B is set according to the vehicle speed based on the relationship with the reduction rate of the information amount of the two ranges 110B.

  The reduction processing unit 37 may change the method of changing the reduction rate of the information amount in the second range 110B between deceleration and acceleration. For example, the reduction processing unit 37 selects the pattern of Example 1 of the reduction rate table shown in FIG. 24 during deceleration, and selects the pattern of Example 2 of the reduction rate table shown in FIG. 24 during acceleration to set the vehicle speed. Accordingly, the reduction rate of the amount of information in the second range 110B may be set.

  The reduction processing unit 37 selects the pattern of Example 1 or the pattern of Example 2 of the reduction rate table shown in FIG. 24, for example, according to the traveling state of the vehicle, the characteristics of the driver, and the like, and the vehicle speed and the first The reduction rate of the information amount in the second range 110B is set according to the vehicle speed based on the relationship with the reduction rate of the information amount of the two ranges 110B. Then, the reduction processing unit 37 performs the same processing as the information amount reduction processing of the first embodiment.

  The flow of processing by the control unit 30 will be described with reference to FIG. The example of FIG. 25 is a processing example in which the vehicle speed and the reduction rate of the amount of information in the second range 110B are changed stepwise at high speed, medium speed, and low speed, but as shown in FIG. The same processing is performed even when changing linearly.

  The control unit 30 causes the video data acquisition unit 32 to acquire the captured video data 100 (step S31). The step S31 performs the same process as the step S21.

  The control unit 30 causes the cutout unit 33 to perform the cutout process (step S32). The step S32 performs the same process as the step S22.

  The control unit 30 causes the range setting unit 35 to set the first range 110A and the second range 110B of the display image data 110 according to the vehicle speed (step S33). The step S33 performs the same process as the step S23.

  The control unit 30 causes the video processing unit 36 to determine whether the vehicle speed is high speed (step S34). In the present embodiment, the high speed is, for example, 80 km / h or higher.

  When the video processing unit 36 determines that the vehicle speed is high (Yes in step S34), the control unit 30 proceeds to step S35.

  If the video processing unit 36 determines that the vehicle speed is not high (No in step S34), the control unit 30 proceeds to step S36.

  The control unit 30 causes the reduction processing unit 37 to perform the information amount reduction process of the second range 110B of the display video data 110 at high speed (step S35). More specifically, the control unit 30 causes the reduction processing unit 37 to set the reduction rate of the information amount in the second range 110B in the case of high speed. Then, the control unit 30 causes the reduction processing unit 37 to reduce the information amount of the second range 110B of the display video data 110 by the set reduction rate.

  The control unit 30 causes the image processing unit 36 to determine whether the vehicle speed is medium speed (step S36). In the present embodiment, the medium speed is, for example, 30 km / h or more and less than 80 km / h.

  When the video processing unit 36 determines that the vehicle speed is medium speed (Yes in step S36), the control unit 30 proceeds to step S37.

  When the image processing unit 36 determines that the vehicle speed is not the medium speed (No in step S36), the control unit 30 proceeds to step S38.

  The control unit 30 causes the reduction processing unit 37 to perform the information amount reduction process of the second range 110B of the display video data 110 at the medium speed (step S37). More specifically, the control unit 30 in the reduction processing unit 37, based on the relationship between the vehicle speed stored in the storage unit 20 and the reduction rate of the information amount of the second range 110B, the second range 110B in the case of medium speed. Set the reduction rate of the information amount in. Then, the control unit 30 causes the reduction processing unit 37 to reduce the information amount of the second range 110B of the display video data 110 by the set reduction rate.

  The control unit 30 causes the reduction processing unit 37 to perform the information amount reduction process of the second range 110B of the display video data 110 at low speed (step S38). More specifically, the control unit 30 in the reduction processing unit 37 is based on the relationship between the vehicle speed stored in the storage unit 20 and the reduction rate of the information amount in the second range 110B, in the second range 110B when the speed is low. Set the reduction rate of the amount of information. Then, the control unit 30 causes the reduction processing unit 37 to reduce the information amount of the second range 110B of the display video data 110 by the set reduction rate.

  The control unit 30 causes the display control unit 40 to display the display video data 110 on the rear view monitor 3 (step S39). The step S39 performs the same process as the step S25.

  Specifically, the reduction processing unit 37 uses the pattern of Example 1 of the reduction rate table shown in FIG. 24 when setting the reduction rate of the information amount in the second range 110B of the display video data 110 according to the vehicle speed. A case will be described.

  For example, when the vehicle speed is 0 km / h, in step S38, the control unit 30 causes the reduction processing unit 37 to set the reduction rate of the information amount in the second range 110B to 0%. Then, the control unit 30 causes the reduction processing unit 37 to reduce the information amount of the second range 110B by 0% as shown in FIG. In other words, the amount of information in the second range 110B is not reduced. Then, in step S39, the control unit 30 causes the display control unit 40 to display the display video data 400 on the rear view monitor 3. In the display image data 400, the information amount is not reduced in both the first range 400A and the second range 400B.

  For example, when the vehicle speed is 40 km / h, in step S37, the reduction processing unit sets the reduction rate of the information amount in the second range 110B to 50%. Then, the control unit 30 causes the reduction processing unit 37 to reduce the information amount of the second range 110B by 50% as shown in FIG. Then, the control unit 30 causes the display control unit 40 to display the display video data 410 on the rear view monitor 3. The display image data 410 includes a first range 410A in which the information amount is not reduced and a second range 410B in which the information amount is reduced by 50%.

  For example, when the vehicle speed is 80 km / h, in step S35, the reduction processing unit 37 sets the reduction rate of the information amount in the second range 110B to 100%. Then, the control unit 30 causes the reduction processing unit 37 to reduce the amount of information in the second range 110B by 100% as shown in FIG. Then, the control unit 30 causes the display control unit 40 to display the display video data 420 on the rear view monitor 3. The display video data 420 includes a first range 420A in which the amount of information is not reduced and a second range 420B in which the amount of information is reduced by 100% and the amount of information is zero and which is not displayed.

  As described above, the present embodiment changes the reduction rate of the information amount of the second range 110B of the display video data 110 according to the vehicle speed. Then, the information amount reduction processing of the second range 110B is performed according to the set reduction rate of the information amount, and the display image data 400, the display image data 410, or the display image data 420 is displayed on the rear view monitor 3. In the present embodiment, the reduction rate of the information amount increases as the vehicle speed increases. Therefore, the rear view monitor 3 displays the display image data 400, the display image data 410, or the display image data 420 in an amount of information that can be easily recognized by the driver. As described above, according to the present embodiment, it is possible to provide the driver with an appropriate amount of information for the driver to recognize and judge according to the vehicle speed. In this way, according to the present embodiment, the amount of information that the driver can obtain is prevented from becoming too large, so that the burden on the driver can be reduced. According to this embodiment, the driver can appropriately confirm the vicinity of the vehicle.

  The constituent elements of the vehicle display system 1 shown in the figure are functionally conceptual, and may not necessarily be physically configured as shown. That is, the specific form of each device is not limited to the one shown in the figure, and all or part of the device may be functionally or physically dispersed or integrated in arbitrary units according to the processing load and usage of each device. May be.

  The configuration of the vehicle display system 1 is realized, for example, as software by a program loaded in a memory. In the above embodiments, the functional blocks are described as the functional blocks realized by the cooperation of these hardware or software. That is, these functional blocks can be realized in various forms by only hardware, only software, or a combination thereof.

  The components described above include those that can be easily conceived by those skilled in the art and those that are substantially the same. Furthermore, the configurations described above can be appropriately combined. In addition, various omissions, substitutions, or changes in the configuration are possible without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Vehicle display system 10 Vehicle display control device 30 Control unit 31 Display image data generation unit 32 Image data acquisition unit 33 Cutout unit 34 Information acquisition unit 35 Range setting unit 36 Image processing unit 37 Reduction processing unit 40 Display control unit 2 Rear camera 3 Rear view monitor (display device)
100 photographed video data 110 display video data 110A first range 110B second range

Claims (7)

A display video data generation unit that acquires captured video data from a rear camera that captures the rear of the vehicle and generates display video data to be displayed on a display device that displays the rear video of the vehicle,
With respect to the display video data, a first range, and a range setting unit arranged on each of both sides of the first range and setting a second range located on both sides of the display video data,
The image of the second range is used as information amount reduction processing for extracting feature points from the image data of the second range of the previous period whose range has been set by the range setting unit of the previous period and reducing the amount of information that the driver can obtain. A video processing unit that performs processing of displaying characteristic points by superimposing or replacing the data,
A display control unit for causing the display device to display the display video data obtained by performing the information amount reduction processing on the second range. When the image processing unit recognizes a vehicle as a feature point from the image data of the second range,
The image processing unit performs a process of displaying an icon indicating a recognized vehicle by superimposing or replacing the image data of the second range as the information amount reduction process on the image data of the second range. The display control device for a vehicle described. An information acquisition unit for acquiring vehicle speed information of the vehicle,
The image processing unit performs the information amount reduction process on the image data in the second range when the vehicle speed information acquired by the information acquisition unit indicates a vehicle speed equal to or higher than a predetermined speed. The display control device for a vehicle according to item 1.   The vehicle display control device according to claim 3, wherein the range setting unit sets the first range to be wider as the vehicle speed is lower, based on the vehicle speed information acquired by the information acquisition unit. A vehicle display control device according to any one of claims 1 to 4,
A vehicle display system comprising at least one of the display device having a display width capable of displaying at least the first range and the second range, and the rear camera. A display image data generation step of obtaining image data captured from a rear camera that captures the rear of the vehicle and generating display image data to be displayed on a display device that displays the rear image of the vehicle;
The feature points are extracted from the video data of the second range, which is arranged on both sides of the first range of the display video data and is located on both sides of the display video data, and the information of information obtained by the driver is obtained. As an information amount reduction process for reducing the amount, a video processing step of performing a process of displaying feature points by superimposing or replacing the video data in the second range,
A display control step of causing the display device to display the display video data obtained by performing the information amount reduction processing on the second range. A display image data generation step of obtaining image data captured from a rear camera that captures the rear of the vehicle and generating display image data to be displayed on a display device that displays the rear image of the vehicle;
The feature points are extracted from the video data of the second range, which is arranged on both sides of the first range of the display video data and is located on both sides of the display video data, and the information of information obtained by the driver is obtained. As an information amount reduction process for reducing the amount, a video processing step of performing a process of displaying feature points by superimposing or replacing the video data in the second range,
A display control step of displaying the display video data, which has been subjected to the information amount reduction processing on the second range, on the display device, a program for causing a computer operating as a vehicle display control device to execute the display control step.

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