JP2017227719A - Vehicle-purpose display control device, vehicle-purpose display system, vehicle-purpose display control method and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To display an amount of information appropriate for drivers.SOLUTION: A vehicle-purpose display device comprises: a display picture data creation unit 31 that creates display picture data 110 causing a rearward picture of a vehicle to be displayed on a rear view monitor 3; a range setting unit 34 that sets up a first range 110A with respect to the display picture data 110, and a second range 110B arranged at each of either side of the first range 110A, and located at either side part of the display picture data 110; a recognition processing unit 35 that implements vehicle recognition with respect to the display picture data 110, and judges the number of recognized vehicles; a picture processing unit 36 that implements information-amount reduction processing for reducing an amount of information to be obtained by drivers to the display picture data 110 of the second range 110B having the range set up by the range setting unit 34 in accordance with the number of vehicles judged by the recognition processing unit 35; and a display control unit 40 that causes display picture data 120 having the information-amount reduction processing implemented to the second range 110B to be displayed on the rear view monitor 3.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.

  In place of a conventional optical room mirror, a technique is known in which a rear peripheral area of a vehicle is photographed with a rear camera and displayed on a rear view monitor (see, for example, Patent Document 1).

JP 2012-170127 A

  The rear camera can capture a range wider than the range projected on the rearview mirror. If a range wider than the range reflected on the rearview mirror is displayed on the rear view monitor, the information amount of information on the situation around the vehicle obtained by the driver from the rearview monitor increases from the information amount obtained from the rearview mirror. However, the amount of information that can be properly recognized by the driver when driving the vehicle is limited. For this reason, if the amount of information to be obtained becomes too large, the driver may have difficulty in properly recognizing the information to be obtained. Furthermore, since it takes time to recognize the time, it takes time to watch the rear view monitor. It will be long. Therefore, it is desired that the rear view monitor displays an appropriate amount of information that can be properly recognized by the driver.

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

  In order to solve the above-described problems and achieve the object, a vehicle display control device according to the present invention acquires captured video data from a rear camera that captures the rear of the vehicle, and displays the rear video of the vehicle. A display video data generating unit for generating display video data to be displayed on the display device, and a first range with respect to the display video data, arranged on both sides of the first range, and the display video data A range setting unit for setting a second range located on both sides, a recognition processing unit for performing vehicle recognition on the display video data and determining the number of recognized vehicles, and the determination processing unit determining According to the number of vehicles, a video processing unit that performs an information amount reduction process for reducing the amount of information obtained by the driver for the video data of the second range in which the range is set by the range setting unit; For the second range The display image data subjected to the information amount reduction process, characterized in that it comprises a said display device display control unit for displaying on.

  A vehicle display system according to the present invention includes the vehicle display control device, 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. It is characterized by providing.

  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 the vehicle, and generates display video data to be displayed on a display device that displays the rear video of the vehicle. According to the video data generation step, the recognition processing step for performing vehicle recognition on the display video data and determining the number of recognized vehicles, and the display video data according to the number of the vehicles determined in the recognition processing step. An image for performing an information amount reduction process for reducing the amount of information obtained by the driver for the second range of video data that is arranged on both sides of the first range of video and located on both sides of the display video data. A processing step, and a display control step of causing the display device to display the display video data obtained by performing the information amount reduction process on the second range.

  A program according to the present invention acquires display 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 recognition processing step for performing vehicle recognition on the display video data and determining the number of recognized vehicles, and a first range of the display video data according to the number of the vehicles determined in the recognition processing step. A video processing step for performing an information amount reduction process for reducing the amount of information obtained by the driver for the second range of video data disposed on both sides of the display video data, The display control step for causing the display device to display the display video data on which the information amount reduction processing has been performed on the second range is operated as a vehicle display control device. It is executed by a computer to be.

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

FIG. 1 is a schematic diagram illustrating a configuration example of a vehicle display system according to the first embodiment. FIG. 2 is a block diagram illustrating a configuration example of the vehicle display system according to the first embodiment. FIG. 3 is a diagram illustrating 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 illustrating 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 diagram illustrating a comparison between a rear view monitor of the vehicle display system according to the first embodiment and a conventional optical room mirror. FIG. 6 is a schematic diagram illustrating another example of the configuration example of the vehicle display system according to the first embodiment. FIG. 7 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. FIG. 8 is a diagram illustrating an example of a process definition table of the vehicle display system according to the first embodiment. FIG. 9 is a diagram illustrating a first range and a second range of video displayed on the rear view monitor of the vehicle display system according to the first embodiment. FIG. 10 is a flowchart showing a flow of processing in the vehicle display system according to the first embodiment. FIG. 11 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. FIG. 12 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. FIG. 13 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. FIG. 14 is a diagram illustrating an example of a process definition table of the vehicle display system according to the second embodiment. FIG. 15 is a flowchart showing a flow of processing in the vehicle display system according to the second embodiment. FIG. 16 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the second embodiment. FIG. 17 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the second embodiment. FIG. 18 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the second embodiment. FIG. 19 is a diagram illustrating an example of a process definition table of the vehicle display system according to the third embodiment. FIG. 20 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment. FIG. 21 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment. FIG. 22 is a diagram illustrating an example of a range definition table of the vehicle display system according to the fourth embodiment. FIG. 23 is a flowchart showing the flow of processing in the vehicle display system according to the fourth embodiment. FIG. 24 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the fourth embodiment. FIG. 25 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the fourth embodiment. FIG. 26 is a diagram illustrating an example of a range definition table of the vehicle display system according to the fifth embodiment. FIG. 27 is a flowchart showing the flow of processing in the vehicle display system according to the fifth embodiment. FIG. 28 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the fifth embodiment. FIG. 29 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the fifth embodiment.

  Exemplary 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 below in detail with reference to the accompanying drawings. In addition, this invention is not limited by the following embodiment.

[First embodiment]
The vehicle display system 1 is mounted on a vehicle and displays an image obtained by photographing the rear of the vehicle. FIG. 1 is a schematic diagram illustrating a configuration example of a vehicle display system according to the first embodiment. FIG. 2 is a block diagram illustrating a configuration example of the vehicle display system according to the first embodiment. The rear of the vehicle includes a rear in the traveling direction and a side rear in the vehicle width direction. In the present embodiment, the rear side will be described, but the present invention can also be applied to the rear side.

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

  The rear camera 2 is disposed behind the vehicle and photographs the rear of the vehicle. FIG. 3 is a diagram illustrating 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 illustrating 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 a confirmation range by the rear view monitor 3. In other words, the rear camera 2 is shooting 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 °. As described above, the rear camera 2 can shoot a video 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 by the cutout unit 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 vehicle display control device 10.

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

  The rear view monitor 3 and the conventional optical room mirror R will be compared and described with reference to FIG. FIG. 5 is a schematic diagram illustrating a comparison between a rear view monitor of the vehicle display system according to the first embodiment and a conventional optical room mirror. The rear view monitor 3 is wider in the vehicle width direction than the conventional optical room mirror R. In the present 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 room mirror R has a width in the vehicle width direction of 200 mm and a width in the height direction of 50 mm, for example.

  The rear view monitor 3 is disposed at a position that is easily visible to the driver. In the present embodiment, the rear view monitor 3 is disposed at the center upper portion 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 disposed at the center upper portion of the dashboard D in the vehicle width direction. FIG. 6 is a schematic diagram illustrating another example of the configuration example of the vehicle display system according to the first embodiment.

  The rear view monitor 3 displays a rear image of the vehicle based on the video 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 illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. In the display video data 110 shown in FIG. 7, an object to be photographed including a following vehicle, a road, and a roadside tree is shown.

  The recognition dictionary storage unit 4 stores a dictionary that can collate patterns such as the shape, size, and color of vehicles including four-wheeled vehicles and two-wheeled vehicles. The recognition dictionary storage unit 4 is, for example, a semiconductor memory element such as a RAM (Random Access Memory), a ROM (Read Only Memory), a flash memory (Flash Memory), or a hard disk, an optical disk, an external storage device via a network, etc. It is stored in the storage device and can be referred to by the recognition processing unit 35.

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

  The storage unit 20 stores data and various processing results required for various processes in the vehicle display control apparatus 10. The storage unit 20 is, for example, a semiconductor memory device such as a RAM, a ROM, or a flash memory, or a storage device such as a hard disk, an optical disk, or an external storage device via a network. Alternatively, an external storage device that is wirelessly connected via a communication device (not shown) may be used. The storage unit 20 stores a process definition table 21.

  The process definition table 21 defines an information amount reduction process to be performed on the second range 110B for each number of vehicles recognized in the display video data 110 (the number of recognized vehicles). The process definition table 21 is defined to increase the degree of reduction of the information amount for the second range 110B as the number of recognized vehicles is smaller.

  The information amount is the amount of information on the situation around the vehicle obtained from the video displayed on the rear view monitor 3 by the driver. The amount of information increases as the display area of the video 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 video displayed on the rear view monitor 3 increases. The amount of information increases as the luminance of the video displayed on the rear view monitor 3 increases.

  It is known that the amount of information that a driver can properly recognize when driving a vehicle is limited. Therefore, an information amount reduction process for reducing the amount of information obtained from the rear view monitor 3 is performed so that the information amount obtained from the rear view monitor 3 by the driver does not increase excessively. More specifically, when a large number of objects are reflected on the rear view monitor 3, the range in which the driver can properly recognize the rear is the range that can be visually recognized by the conventional optical room mirror R, in other words, the display video data 110. The first range 110A in FIG. In other words, when a small number of objects are reflected on the rear view monitor 3, even if the display area is larger than that of the conventional optical room mirror R, the driver can appropriately recognize it. Therefore, the information amount reduction degree is changed according to the number of objects to be photographed. In the present embodiment, it is determined whether or not the information amount reduction process is performed on the second range 110B for each recognized vehicle number. The information amount reduction process includes a process of hiding the second range 110B. Or in this embodiment, the information content reduction degree with respect to the 2nd range 110B is changed for every recognition vehicle number.

  For example, the process definition table 21 shown in FIG. 8 defines three patterns. FIG. 8 is a diagram illustrating an example of a process definition table of the vehicle display system according to the first embodiment. In the pattern example 1, when the number of recognized vehicles in the display video data 110 is “none” or “1 or more and less than 10”, the information amount reduction processing of the second range 110B is defined as “perform”, and the number of recognized vehicles is In the case of “10 or more”, it is defined that the information amount reduction process is “not performed”. In pattern example 2, when the number of recognized vehicles is “none”, the information amount reduction process is defined as “large reduction degree”. When the number of recognized vehicles is “1 or more and less than 10”, the information amount reduction process is “ If the number of recognized vehicles is “10 or more”, it is defined that the information amount reduction process is “not performed”. The large degree of reduction means that the amount of information in the second range 110B is reduced by 50%, for example. “During reduction degree” means that the reduction degree of the information amount in the second range 110B is smaller than in the case of the reduction degree being large. “During reduction” means that the amount of information in the second range 110B is reduced by, for example, 25%. In pattern example 3, when the number of recognized vehicles is “None”, it is defined as “not display (second range)”, and when the number of recognized vehicles is “1 or more and less than 10”, information amount reduction processing is performed. When it is defined as “perform” and the number of recognized vehicles is “10 or more”, the information amount reduction process is defined as “not performed”. The process definition table 21 is not limited to this. Which pattern of the process definition table 21 is used is set in advance.

  The control unit 30 is an arithmetic processing unit configured with, for example, a CPU (Central Processing Unit). The control unit 30 includes a display video data generation unit 31, a range setting unit 34, a video processing unit 36 having a recognition processing unit 35, and a display control unit 40. The control unit 30 executes 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 video data acquisition unit 32 acquires a video obtained by photographing 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 from 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. The storage unit 20 stores in advance which range of the captured video data 100 is to be cut out as a range to be displayed on the rear view monitor 3. 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. The cutout unit 33 outputs the cut display video data 110 to the range setting unit 34.

  The range setting unit 34 sets the first range 110 </ b> A and the second range 110 </ b> B located on both sides of the first range 110 </ b> A and positioned on both sides of the display video data 110 with respect to the display video data 110. . In the present embodiment, as shown in FIG. 9, the first range 110 </ b> A is set as a range having the center line L of the display video data 110 as the center axis. FIG. 9 is a diagram illustrating a first range and a second range of video displayed on the rear view monitor of the vehicle display system according to the first embodiment. In the present embodiment, the first range 110A has a width in the vehicle width direction of 200 mm. The second range 110B has a width in the vehicle width direction of 100 mm. The first range 110A is a range that can be visually recognized when the driver views the conventional optical room mirror R from the front. The second range 110B includes a range that is not visible when the driver views the conventional optical room mirror R from the front, and is visible when the viewpoint is shifted or the angle is adjusted, and a range outside the range. The range setting unit 34 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 recognition processing unit 35 performs vehicle recognition on the display video data 110 and determines the number of recognized vehicles. More specifically, the recognition processing unit 35 performs pattern matching on the display video data 110 using the recognition dictionary stored in the recognition dictionary storage unit 4 to detect the presence of the vehicle. The recognition processing unit 35 may determine that a vehicle is present when a predetermined ratio or more of the total area of the vehicle image stored in the recognition dictionary is detected. Then, the recognition processing unit 35 counts and determines the number of detected vehicles.

  The video processing unit 36 performs processing for reducing the amount of information obtained by the driver on the video data in the second range 110 </ b> B of the display video data 110 according to the number of vehicles determined by the recognition processing unit 35. More specifically, the video processing unit 36 displays the display video data 120 in which the information amount reduction degree is changed with respect to the second range 110B of the display video data 110 according to the number of vehicles determined by the recognition processing unit 35. Information amount reduction processing to be generated and output to the display control unit 40 is performed. 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.

  Therefore, the video processing unit 36 reduces the amount of information in the second range 110 </ b> B so as to narrow down to information that the driver needs and can recognize, depending on the number of vehicles that are objects to be photographed reflected on the rear view monitor 3. Display video data 120 is generated. More specifically, the video processing unit 36 refers to the process definition table 21 based on the number of vehicles determined by the recognition processing unit 35 and displays a display video in which the information amount of the second range 110B of the display video data 110 is reduced. An information amount reduction process for generating data 120 and outputting it to the display control unit 40 is performed. The amount of information of the display video data 120 is reduced within a range in which the driver can recognize the presence or absence of an object to be photographed from the second range 120B, except for the case of non-display. For this reason, even if the amount of information in the second range 120B is reduced, the driver can obtain information desired to be obtained from the second range 120B as necessary.

  The information amount reduction process includes, for example, a color information reduction process for reducing color information and a luminance reduction process for reducing luminance.

  The color information reduction process is a process for generating the display video data 120 in which the color information of the second range 110 </ b> B 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 process, the display video data 120 in which the saturation for each RGB of the second range 110B of the display video 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 process, the display video data 120 in which the saturation of the second range 110B of the display video data 110 is set to a predetermined amount or a predetermined rate, low monochrome or black and white is generated and output to the display control unit 40. May be.

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

  The video processing unit 36 may perform either the color information reduction process or the luminance reduction process, or may combine both.

  If the number of vehicles determined by the recognition processing unit 35 is not less than the predetermined number, the video processing unit 36 does not perform the information amount reduction process on the video data in the second range 110B of the display video data 110, and displays the display video data. 110 is output to the display control unit 40.

  The display control unit 40 displays the display video data 110 or the display video data 120 output from the video processing unit 36 on the rear view monitor 3.

  Next, the flow of processing by the control unit 30 will be described with reference to FIG. FIG. 10 is a flowchart showing a 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 cutting unit 33 to perform a cutting process (step S12). More specifically, the control unit 30 causes the cutout unit 33 to cut out a range to be displayed on the rear view monitor 3 from the captured video data 100 as the display video data 110.

  The control unit 30 causes the recognition processing unit 35 to perform vehicle recognition of the display video data 110 (step S13).

  The control unit 30 causes the recognition processing unit 35 to determine the number of recognized vehicles (step S14). More specifically, the control unit 30 causes the recognition processing unit 35 to determine the number of vehicles recognized from the display video data 110.

  The control unit 30 causes the video processing unit 36 to determine whether or not the number of recognized vehicles is less than a predetermined value (step S15). More specifically, the control unit 30 determines whether or not the number of recognized vehicles in the display video data 110 determined by the recognition processing unit 35 is less than a predetermined value. In the present embodiment, the threshold of the number of recognized vehicles is set to 10 and it is determined whether or not the number of recognized vehicles in the display video data 110 is less than 10. The threshold value of the number of recognized vehicles is a boundary value that determines whether or not to reduce the information amount in the second range 110B. More specifically, the threshold value of the number of recognized vehicles is set to a value that, when the number of vehicles reflected in the display video data 110 exceeds that value, the traffic volume is large and the vehicle speed is estimated to be low. When the vehicle speed is low, the driver can appropriately recognize the information without reducing the information amount in the second range 110B. For example, when the vehicle speed is low, the viewing time for the driver to view the rear view monitor 3 is longer than that during high-speed traveling, and information on the second range 110B is often required. When the number of vehicles reflected in the display video data 110 is less than the threshold, it is estimated that the traffic volume is small and the vehicle speed is high. When the vehicle speed is high, the viewing time of the rear view monitor 3 is shorter than when driving at a low speed or when there is traffic, and the information in the second range 110B is less likely to be required.

  If the video processing unit 36 determines that the number of recognized vehicles is not less than the predetermined value (No in step S15), the control unit 30 proceeds to step S17. 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 number of recognized vehicles is less than the predetermined value (Yes in step S15), the control unit 30 proceeds to step S16.

  The control unit 30 causes the video processing unit 36 to perform an information amount reduction process for the second range 110B of the display video data 110 (step S16). More specifically, the control unit 30 refers to the process definition table 21 based on the number of recognized vehicles determined by the recognition processing unit 35 in the video processing unit 36, and the information amount of the second range 110B corresponding to the number of recognized vehicles. Get reduction processing. Then, the control unit 30 causes the video processing unit 36 to reduce the information amount of the second range 110B of the display video data 110 based on the information amount reduction process of the second range 110B corresponding to the acquired number of recognized vehicles. The display image data 120 is generated and the information amount reduction process for causing the display control unit 40 to output it is performed.

  For example, the control unit 30 may generate the display video data 120 in which the second range 110B of the display video data 110 is set to, for example, low-saturation monochrome or black and white and output the display control unit 40 to the display control unit 40. Good.

  Alternatively, for example, the control unit 30 outputs, to the display control unit 40, a control signal that causes the first range 110 </ b> A to be normal luminance and the second range 110 </ b> B to be lower than normal luminance at the video processing unit 36. You may let them.

  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 S17).

  Specifically, the case where the process by the control unit 30 is performed using the pattern example 3 of the process definition table 21 illustrated in FIG. 8 will be described.

  For example, a case where the number of recognized vehicles in the display video data 110 is 11 will be described. The image processing unit 36 refers to the process definition table 21 and acquires the information amount reduction process for the second range 110B corresponding to the number of recognized vehicles “10 or more”, “not performed”. Then, the video processing unit 36 does not perform the information amount reduction process of the second range 110B, and the display control unit 40 displays the display video data 110 as shown in FIG. 11 on the rear view monitor 3. FIG. 11 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. In this case, there are many vehicles, and it is estimated that the vehicle speed is low. In a situation where there are a large number of vehicles, the driver wants to ensure a wide field of view. For this reason, the control unit 30 displays the display video data 110 on the rear view monitor 3 without performing the information amount reduction process of the second range 110B. Since the vehicle speed is low, the driver can appropriately check the rear even if the amount of information obtained from the rear view monitor 3 is large.

  For example, a case where the number of recognized vehicles in the display video data 110 is six will be described. The image processing unit 36 refers to the process definition table 21 and acquires the information amount reduction process of the second range 110B corresponding to the number of recognized vehicles “1 or more and less than 10”, “perform”. Then, the video processing unit 36 performs an information amount reduction process for the second range 110B, and the display control unit 40 causes the rear view monitor 3 to display the display video data 120 with the information amount reduced as shown in FIG. FIG. 12 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. In this case, there is no traffic jam and the vehicle speed is estimated to be high. For this reason, the control unit 30 causes the rear view monitor 3 to display the display video data 120 in which the amount of information in the second range 110B is reduced so as to narrow down to information that is necessary and recognizable by the driver. Since the amount of information is reduced, the driver can appropriately confirm the rear.

  For example, a case where the number of recognized vehicles in the display video data 110 is zero will be described. The image processing unit 36 refers to the process definition table 21 and acquires the information amount reduction process of the second range 110B corresponding to the number of recognized vehicles “none”, “does not display (second range)”. Then, the display control unit 40 causes the rear view monitor 3 to display the display video data 120 in which the second range 110B is not displayed, as shown in FIG. FIG. 13 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the first embodiment. In this case, there is no traffic jam and the vehicle speed is estimated to be high. Thus, in the situation where there are no other vehicles around the host vehicle, the need for backward confirmation is reduced. Therefore, the control unit 30 causes the rear view monitor 3 to display the display video data 120 in which the second range 110B is not displayed. As described above, since no other vehicle is reflected in the hidden second range 110B, the driver can appropriately confirm the rear.

  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 number of recognized vehicles in the display video data 110 is less than the predetermined number, the display video data 120 with the reduced information amount is displayed on the rear view monitor 3. Moreover, when the number of recognized vehicles in the display video data 110 is less than a predetermined value, the display video data 120 in which the information amount reduction degree is changed according to the number of recognized vehicles is displayed on the rear view monitor 3. When the number of recognized vehicles in the display video data 110 is not less than the predetermined number, the display video data 110 in which the information amount of the second range 110B is not reduced is displayed on the rear view monitor 3. The rear view monitor 3 displays the display video data 110 or the display video data 120 having an amount of information that can be easily recognized by the driver according to the number of recognized vehicles of the display video data 110. As described above, according to the present embodiment, it is possible to display an appropriate amount of information for the driver according to the number of recognized vehicles in the display video data 110. Thus, according to the present embodiment, the driver can appropriately check the periphery of the vehicle.

  According to the present embodiment, when the number of recognized vehicles in the display video data 110 is less than a predetermined value, the information amount reduction process is performed on the second range 110 </ b> B of the display video data 110. In other words, according to the present embodiment, the first range 110A that can be viewed when the driver views the conventional optical room mirror R is reduced regardless of the number of recognized vehicles of the display video data 110. It has not been. For this reason, this embodiment can always confirm the back as well as the conventional optical room mirror R.

  According to the present embodiment, the second range 120B of the display video data 120 allows the driver to recognize the presence or absence of the object to be photographed, and allows the driver to differ in information amount between the first range 120A and the second range 120B. The amount of information is reduced to the extent that can be recognized. For this reason, in this embodiment, even if the amount of information in the second range 120B is reduced, the driver can acquire information desired to be obtained from the second range 120B as necessary. Thereby, the driver can take an appropriate avoidance action as necessary.

[Second Embodiment]
The vehicle display system 1 according to the present embodiment will be described with reference to FIGS. 14 to 18. FIG. 14 is a diagram illustrating an example of a process definition table of the vehicle display system according to the second embodiment. FIG. 15 is a flowchart showing a flow of processing in the vehicle display system according to the second embodiment. FIG. 16 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the second embodiment. FIG. 17 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the second embodiment. FIG. 18 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the second embodiment.

  The vehicle display system 1 has the same basic configuration as the vehicle display system 1 of the first embodiment. In the following description, the detailed description of the same components as those of the vehicle display system 1 is omitted. The vehicle display system 1 of the present embodiment is different from the vehicle display system 1 of the first embodiment in information processing in the control unit 30 of the vehicle display control device 10.

  An example of the process definition table 21A according to this embodiment will be described with reference to FIG. In the process definition table 21A, information amount reduction processing to be performed on the second range 110B is defined for each number of recognized vehicles in the second range 110B of the display video data 110. Here, the number of recognized vehicles in the second range 110B is the sum of the number of recognized vehicles in the second range 110B on the left side and the number of recognized vehicles in the second range 110B on the right side. A lane different from the host vehicle is reflected in the second range 110B. A vehicle traveling in a lane different from the own vehicle, that is, a vehicle reflected in the second range 110B is a vehicle that is likely to come to the side of the own vehicle due to overtaking or overtaking.

  For example, in the process definition table 21A shown in FIG. 14, three patterns are defined. In the pattern example 1, when the number of recognized vehicles in the second range 110B is “none” or “one or more and less than three”, the information amount reduction processing in the second range 110B is defined as “perform”, and the number of recognized vehicles is In the case of “three or more”, it is defined that the information amount reduction process is “not performed”. In pattern example 2, when the number of recognized vehicles is “none”, the information amount reduction process is defined as “large reduction degree”, and when the number of recognized vehicles is “1 or more and less than 3”, the information amount reduction process is “ If the number of recognized vehicles is “three or more”, it is defined that the information amount reduction process is “not performed”. In example pattern 3, when the number of recognized vehicles is “none”, it is defined as “not display (second range)”, and when the number of recognized vehicles is “1 or more and less than 3”, information amount reduction processing is performed. When it is defined as “perform” and the number of recognized vehicles is “three or more”, it is defined that the information amount reduction process is “not performed”. The process definition table 21A is not limited to this.

  The recognition processing unit 35 performs vehicle recognition on the second range 110B of the display video data 110, and determines the number of recognized vehicles. More specifically, the recognition processing unit 35 performs pattern matching using the recognition dictionary stored in the recognition dictionary storage unit 4 on the second range 110B of the display video data 110 to detect the presence of the vehicle.

  The video processing unit 36 reduces the amount of information with respect to the second range 110B of the display video data 110 according to the number of vehicles in the second range 110B of the display video data 110 determined by the recognition processing unit 35. An information amount reduction process for generating the display video data 120 and outputting it to the display control unit 40 is performed.

  Next, the flow of processing by the control unit 30 will be described with reference to FIG. Step S21, step S22, and step S27 perform the same processing as step S11, step S12, and step S17 of the first embodiment.

  The control unit 30 causes the recognition processing unit 35 to perform vehicle recognition of the second range 110B of the display video data 110 (step S23).

  The control unit 30 uses the recognition processing unit 35 to determine the number of recognized vehicles (step S24). More specifically, the control unit 30 causes the recognition processing unit 35 to determine the number of vehicles recognized from the second range 110 </ b> B of the display video data 110.

  The control unit 30 determines whether or not the number of recognized vehicles is less than a predetermined value in the video processing unit 36 (step S25). More specifically, the control unit 30 determines whether or not the number of recognized vehicles in the second range 110B of the display video data 110 determined by the recognition processing unit 35 is less than a predetermined value. In this embodiment, the threshold value of the number of recognized vehicles is three, and it is determined whether the number of recognized vehicles is less than three.

  When the video processing unit 36 determines that the number of recognized vehicles is not less than the predetermined value (No in Step S25), the control unit 30 proceeds to Step S27. 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 number of recognized vehicles is less than the predetermined value (Yes in step S25), the control unit 30 proceeds to step S26.

  The control unit 30 causes the video processing unit 36 to perform an information amount reduction process for the second range 110B of the display video data 110 (step S26). More specifically, the control unit 30 refers to the process definition table 21 </ b> A based on the number of recognized vehicles in the second range 110 </ b> B determined by the recognition processing unit 35 in the video processing unit 36. Then, based on the information amount reduction processing of the second range 110B corresponding to the number of recognized vehicles, the display video data 120 in which the information amount of the second range 110B of the display video data 110 is reduced is generated and output to the display control unit 40. To do.

  Specifically, a case will be described in which processing by the control unit 30 is performed using pattern example 3 of the process definition table 21A illustrated in FIG.

  For example, a case where the number of recognized vehicles in the second range 110B is three will be described. The image processing unit 36 refers to the process definition table 21A, and acquires the information amount reduction process of the second range 110B corresponding to the number of recognized vehicles “three or more” in the second range 110B, “not performed”. Then, the video processing unit 36 does not perform the information amount reduction process of the second range 110B, and the display control unit 40 displays the display video data 110 as shown in FIG. In this case, there are many vehicles, and it is estimated that the vehicle speed is low. In a situation where there are a large number of vehicles, the driver wants to ensure a wide field of view. For this reason, the control unit 30 displays the display video data 110 on the rear view monitor 3 without performing the information amount reduction process of the second range 110B. Since the vehicle speed is low, the driver can appropriately check the rear even if the amount of information obtained from the rear view monitor 3 is large.

  For example, a case where the number of recognized vehicles in the second range 110B is two will be described. The image processing unit 36 refers to the process definition table 21A, and acquires the information amount reduction process of the second range 110B corresponding to the number of recognized vehicles “1 to less than 3” in the second range 110B, “perform”. The Then, the image processing unit 36 performs the information amount reduction process of the second range 110B, and the display control unit 40 displays the display image data 120 with the information amount reduced as shown in FIG. The In this case, there is no traffic jam and the vehicle speed is estimated to be high. For this reason, the control unit 30 causes the rear view monitor 3 to display the display video data 120 in which the amount of information in the second range 110B is reduced so as to narrow down to information that is necessary and recognizable by the driver. Since the amount of information is reduced, the driver can appropriately confirm the rear.

  For example, a case where the number of recognized vehicles in the second range 110B is zero will be described. In the video processing unit 36, the process definition table 21A is referred to, and the information amount reduction process of the second range 110B corresponding to the number of recognized vehicles “none” in the second range 110B is “not displayed (second range)”. Is acquired. Then, the display control unit 40 causes the rear view monitor 3 to display the display video data 120 in which the second range 110B is not displayed as shown in FIG. In this case, there is no traffic jam and the vehicle speed is estimated to be high. Thus, in the situation where there are no other vehicles around the host vehicle, the need for backward confirmation is reduced. Therefore, the control unit 30 causes the rear view monitor 3 to display the display video data 120 in which the second range 110B is not displayed. As described above, even if the second range 110B is hidden, the other vehicle is not reflected in the hidden second range 110B, so the driver can appropriately confirm the rear. it can.

  As described above, according to the present embodiment, when the number of recognized vehicles in the second range 110B of the display video data 110 is less than a predetermined value, the rear view monitor 3 displays the information amount of the second range 120B reduced. Video data 120 is displayed. In addition, when the number of recognized vehicles in the second range 110B of the display video data 110 is less than a predetermined value, the display video data 120 in which the information amount reduction degree is changed according to the number of recognized vehicles is displayed on the rear view monitor 3. . When the number of recognized vehicles in the second range 110B of the display video data 110 is not less than the predetermined number, the display video data 110 whose information amount is not reduced is displayed on the rear view monitor 3. The rear view monitor 3 displays the display video data 110 or the display video data 120 having an information amount that can be easily recognized by the driver according to the number of recognized vehicles in the second range 110B of the display video data 110. Thus, according to the present embodiment, it is possible to display an information amount appropriate for the driver according to the number of recognized vehicles in the second range 110B of the display video data 110 that reduces the information amount.

  According to this embodiment, according to the number of recognized vehicles in the second range 110B, in other words, the driver is likely to come to the side of the host vehicle, and the driver is traveling on a lane different from the host vehicle. It is determined whether or not to perform the information amount reduction process of the second range 110B according to the number. For this reason, according to the present embodiment, the vehicle periphery can be checked more appropriately.

[Third embodiment]
The vehicle display system 1 according to the present embodiment will be described with reference to FIGS. 19 to 21. FIG. 19 is a diagram illustrating an example of a process definition table of the vehicle display system according to the third embodiment. FIG. 20 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment. FIG. 21 is a diagram illustrating another example of an image displayed on the rear view monitor of the vehicle display system according to the third embodiment.

  The vehicle display system 1 according to the present embodiment determines whether or not to perform the information amount reduction process for each of the second range 110B on the left side and the second range 110B on the right side according to the number of recognized vehicles. The point which performs each information amount reduction process of the 2nd range 110B and the 2nd range 110B of the right side differs from the display system 1 for vehicles of 2nd embodiment.

  An example of the process definition table 21B of this embodiment will be described with reference to FIG. In the process definition table 21B, information amount reduction processing to be performed on the second range 110B is defined for each number of recognized vehicles in the second range 110B on either the left side or the right side of the display video data 110. For example, in the process definition table 21B shown in FIG. 19, three patterns are defined. In the pattern example 1, when the number of recognized vehicles in the second range 110B on either the left side or the right side is “none” or “one or more and less than three”, the information amount reduction processing in the second range 110B is “performed”. When the number of recognized vehicles is “three or more”, the information amount reduction process is defined as “not performed”. In pattern example 2, when the number of recognized vehicles is “none”, the information amount reduction process is defined as “large reduction degree”, and when the number of recognized vehicles is “1 or more and less than 3”, the information amount reduction process is “ If the number of recognized vehicles is “three or more”, it is defined that the information amount reduction process is “not performed”. In example pattern 3, when the number of recognized vehicles is “none”, it is defined as “not display (second range)”, and when the number of recognized vehicles is “1 or more and less than 3”, information amount reduction processing is performed. When it is defined as “perform” and the number of recognized vehicles is “three or more”, it is defined that the information amount reduction process is “not performed”. The process definition table 21B is not limited to this.

  The recognition processing unit 35 performs vehicle recognition for each of the second range 110B on the left side and the second range 110B on the right side of the display video data 110, and determines the number of recognized vehicles. More specifically, the recognition processing unit 35 performs vehicle recognition on the second range 110B on the left side of the display video data 110, and determines the number of recognized vehicles. The recognition processing unit 35 performs vehicle recognition on the second range 110B on the right side of the display video data 110, and determines the number of recognized vehicles.

  The video processing unit 36 sets the amount of information for the second range 110B on the left side of the display video data 110 and the second range 110B on the right side according to the number of vehicles. An information amount reduction process for generating the reduced display video data 120 and outputting it to the display control unit 40 is performed. More specifically, the video processing unit 36 reduces the amount of information for the second range 110B on the left side of the display video data 110 in accordance with the number of vehicles in the second range 110B on the left side of the display video data 110. The video processing unit 36 reduces the amount of information with respect to the second range 110B on the right side of the display video data 110 according to the number of vehicles in the second range 110B on the right side of the display video data 110.

  The control unit 30 performs steps S23 to S26 of the information processing shown in FIG. 15 for the second range 110B on the left side and the second range 110B on the right side of the display video data 110, respectively.

  Specifically, the case where the process by the control unit 30 is performed using the pattern example 3 of the process definition table 21B illustrated in FIG. 19 will be described.

  For example, a case will be described in which the number of recognized vehicles in the second range 110B on the left is two and the number of recognized vehicles in the second range 110B on the right is zero. The image processing unit 36 refers to the process definition table 21B for the second range 110B on the left side, and reduces the amount of information in the second range 110B corresponding to the number of recognized vehicles “1 or more and less than 3” in the second range 110B. The process “perform” is acquired. Then, the video processing unit 36 performs an information amount reduction process for the second range 110B on the left side. The image processing unit 36 refers to the process definition table 21B for the second range 110B on the right side, and performs the information amount reduction process “(second) in the second range 110B corresponding to the number of recognized vehicles“ none ”in the second range 110B. "Do not display range" "is acquired. Then, the video processing unit 36 hides the second range 110B on the right side. Then, the display control unit 40 displays the display video data 120 as shown in FIG. 20 on the rear view monitor 3. In this case, the second range 110B on the right side is hidden, but the oncoming lane is displayed in almost the range of the second range 110B on the right side. Even if there is, there is no hindrance in the backward confirmation.

  For example, the case where the number of recognized vehicles in the second range 110B on the left side is three and the number of recognized vehicles in the second range 110B on the right side is zero will be described. In the video processing unit 36, the process definition table 21B is referred to for the second range 110B on the left side, and the information amount reduction process for the second range 110B corresponding to the number of recognized vehicles “three or more” in the second range 110B is performed. No ”is acquired. And the control part 30 does not perform the information amount reduction process of the left side 2nd range 110B. In the video processing unit 36, the process definition table 21B is referred to for the second range 110B on the right side, and the information amount reduction process “(second range) corresponding to the number of recognized vehicles“ none ”in the second range 110B. ")" Is not displayed. Then, the video processing unit 36 hides the second range 110B on the right side. Then, the display control unit 40 displays the display video data 120 as shown in FIG. 21 on the rear view monitor 3. Also in this case, the second range 110B on the right side is not displayed, but the oncoming lane is displayed in almost the entire range of the second range 110B on the right side. Even if it is done, there is no hindrance to the backward confirmation.

  As described above, according to the present embodiment, whether or not the information amount reduction process is performed for each of the second range 110B on the left side and the second range 110B on the right side of the display video data 110 according to the number of recognized vehicles. And the information amount reduction process is performed for each of the left second range 110B and the right second range 110B. As described above, according to the present embodiment, the amount of information is reduced for each of the second range 110B on the left side and the second range 110B on the right side of the display video data 110, which is appropriate for the driver according to the number of recognized vehicles. The amount of information can be displayed.

[Fourth embodiment]
The vehicle display system according to the present embodiment will be described with reference to FIGS. FIG. 22 is a diagram illustrating an example of a range definition table of the vehicle display system according to the fourth embodiment. FIG. 23 is a flowchart showing the flow of processing in the vehicle display system according to the fourth embodiment. FIG. 24 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the fourth embodiment. FIG. 25 is a diagram illustrating 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 1 of the present embodiment is different from the vehicle display system 1 of the first embodiment in the processing in the control unit 30.

  The storage unit 20 stores a range definition table 22.

  An example of the range definition table 22 of this embodiment will be described with reference to FIG. The range definition table 22 defines a range in which the information amount reduction process is performed on the second range 110 </ b> B for each number of recognized vehicles in the display video data 110. The range definition table 22 is defined such that the larger the number of recognized vehicles, the narrower the range in which the information amount reduction process is performed on the second range 110B.

  For example, the range definition table 22 shown in FIG. 22 defines two patterns. In the pattern example 1, when the number of recognized vehicles in the display video data 110 is “none” or “1 to less than 8”, the range for performing the information amount reduction process in the second range 110B is defined as “no change” When the number of recognized vehicles is “8 or more”, the range in which the information amount reduction processing is performed is defined as “in the narrowing degree”. In pattern example 2, when the number of recognized vehicles is “none”, the range for performing the information amount reduction process is defined as “no change”, and when the number of recognized vehicles is “1 to less than 8”, the information amount reduction process Is defined as “in the narrowing degree”, and when the number of recognized vehicles is “8 or more”, the range in which the information amount reduction processing is performed is defined as “increasing narrowing degree”. The range definition table 22 is not limited to this.

  The range setting unit 34 sets a range in which the information amount reduction processing of the second range 110 </ b> B of the display video data 110 is performed according to the number of recognized vehicles of the display video data 110. Based on the number of recognized vehicles, the range setting unit 34 sets a narrower range for performing the information amount reduction process in the second range 110B as the number of recognized vehicles increases. For example, the range setting unit 34 may set the ratio of the second range 110 </ b> B corresponding to the range definition table 22 stored in the storage unit 20 in advance. In the present embodiment, when the range for performing the information amount reduction process for the second range 110B in the range definition table 22 is “no change”, the information amount reduction process is performed for the entire second range 110B. In the present embodiment, when the range for performing the information amount reduction process of the second range 110B in the range definition table 22 is “in the middle of narrowing”, the information amount is reduced with respect to a range ½ from the outside of the second range 110B. Processing shall be performed. In the present embodiment, when the range for performing the information amount reduction process of the second range 110B of the range definition table 22 is “large degree of narrowing”, the information of the second range 110B is compared with the case of “medium degree of narrowing”. The range in which the amount reduction processing is performed is made narrower. For example, when the range for performing the information amount reduction process for the second range 110B in the range definition table 22 is “large degree of narrowing”, the information amount reduction process is performed for a range that is ¼ from the outside of the second range 110B. Shall. In other words, in the present embodiment, when the range for performing the information amount reduction process of the second range 110B of the range definition table 22 is “in the narrowing degree” or “large in the narrowing degree”, It is assumed that the information amount reduction process is not performed on the one range 110A side.

  The range setting unit 34 selects, for example, the pattern of the example 1 or the pattern of the example 2 of the range definition table 22 shown in FIG. 22 according to the traveling state of the vehicle, the characteristics of the driver, etc. Based on the relationship between the number and the range for performing the information amount reduction process, the range for performing the information amount reduction process is set according to the number of recognized vehicles.

  Next, the flow of processing by the control unit 30 will be described with reference to FIG. Steps S31 to S34 and Step S38 perform the same processing as Steps S11 to S14 and Step S17 of the first embodiment.

  The control unit 30 causes the video processing unit 36 to determine whether or not the number of recognized vehicles is greater than or equal to a predetermined value (step S35). More specifically, the control unit 30 determines whether or not the number of recognized vehicles in the display video data 110 determined in step S34 is greater than or equal to a predetermined value. In this embodiment, the threshold value of the number of recognized vehicles is eight, and it is determined whether or not the number of recognized vehicles in the display video data 110 is eight or more. The threshold value of the number of recognized vehicles is a boundary value that divides whether or not to change the range for performing the information amount reduction process in the second range 110B.

  The control unit 30 causes the range setting unit 34 to change the information amount reduction range of the second range 110B (step S36). More specifically, the control unit 30 causes the range setting unit 34 to acquire a range for performing the information amount reduction process of the second range 110 </ b> B corresponding to the number of recognized vehicles in the display video data 110 based on the range definition table 22. And the control part 30 makes the range setting part 34 set the range which performs the information amount reduction process of the acquired 2nd range 110B with respect to the 2nd range 110B of the display video data 110. FIG.

  The control unit 30 causes the video processing unit 36 to perform an information amount reduction process for the second range 110B of the display video data 110 (step S37). More specifically, the control unit 30 causes the video processing unit 36 to reduce the information amount for the range in which the information amount reduction processing of the second range 110B of the display video data 110 is performed. Then, the control unit 30 causes the video processing unit 36 to output the generated display video data 120 to the display control unit 40.

  Specifically, the case where the process by the control unit 30 is performed using the pattern example 1 of the range definition table 22 illustrated in FIG. 22 will be described.

  For example, a case where the number of recognized vehicles in the display video data 110 is four will be described. The image processing unit 36 refers to the range definition table 22 and acquires the information amount reduction processing range of the second range 110B corresponding to the number of recognized vehicles “1 to less than 8”, “no change”. Then, the video processing unit 36 performs an information amount reduction process for the entire second range 110B, and the display control unit 40 displays the display video data 120 as shown in FIG. Even if the information amount reduction process is performed for the entire second range 110B, since the number of vehicles in the display video data 110 is small, the driver can perform the first overtaking or overtaking by the vehicle recognized in the first range 120A. It is possible to recognize a vehicle moving from the range 120A to the second range 120B and appropriately confirm the rear. In FIG. 24, the boundary between the first range 120A and the second range 120B is indicated by a broken line, but the boundary is not actually displayed.

  For example, a case where the number of recognized vehicles in the display video data 110 is eight will be described. The image processing unit 36 refers to the range definition table 22 and acquires the information amount reduction processing range of the second range 110B corresponding to the number of recognized vehicles “8 or more”, “in the narrowing degree”. Then, the video processing unit 36 performs an information amount reduction process for a range ½ from the outside of the second range 110B, and the display control unit 40 converts the display video data 120 as shown in FIG. Is displayed. In order to narrow the second range 120B for reducing the amount of information, the driver recognizes a vehicle moving from the first range 120A to the second range 120B when overtaking or passing by the vehicle recognized in the first range 120A. , You can check back properly. In FIG. 25, the boundary between the first range 120A and the second range 120B is indicated by a broken line, but the boundary is not actually displayed.

  As described above, according to the present embodiment, the range in which the information amount reduction processing of the second range 110B of the display video data 110 is performed is changed according to the number of recognized vehicles of the display video data 110. In the present embodiment, as the number of recognized vehicles in the display video data 110 increases, the degree of narrowing the range in which the information amount reduction processing of the second range 110B of the display video data 110 is performed is increased. As described above, according to the present embodiment, the degree of narrowing can be changed in accordance with the number of recognized vehicles in the display video data 110, and the amount of information in an appropriate range for the driver can be reduced and displayed. Thus, according to the present embodiment, the driver can appropriately check the periphery of the vehicle.

[Fifth embodiment]
The vehicle display system according to the present embodiment will be described with reference to FIGS. FIG. 26 is a diagram illustrating an example of a range definition table of the vehicle display system according to the fifth embodiment. FIG. 27 is a flowchart showing the flow of processing in the vehicle display system according to the fifth embodiment. FIG. 28 is a diagram illustrating an example of an image displayed on the rear view monitor of the vehicle display system according to the fifth embodiment. FIG. 29 is a diagram illustrating 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 1 according to the present embodiment determines whether or not to perform the information amount reduction process according to the number of recognized vehicles in the first range 110A of the display video data 110, and determines the information amount reduction process in the second range 110B. The point which sets the range which performs is different from the display system 1 for vehicles of 4th embodiment.

  An example of the range definition table 22A of this embodiment will be described with reference to FIG. In the range definition table 22A, a range in which the information amount reduction process is performed on the second range 110B is defined for each number of recognized vehicles in the first range 110A of the display video data 110. For example, in the range definition table 22A shown in FIG. 26, two patterns are defined. In the pattern example 1, when the number of recognized vehicles in the display video data 110 is “none” or “less than 1 and less than 5”, the range for performing the information amount reduction process in the second range 110B is defined as “no change” When the number of recognized vehicles is “5 or more”, the range in which the information amount reduction processing is performed is defined as “in the narrowing degree”. In pattern example 2, when the number of recognized vehicles is “none”, the range for performing the information amount reduction process is defined as “no change”, and when the number of recognized vehicles is “1 to less than 5”, the information amount reduction process Is defined as “in the narrowing degree”, and when the number of recognized vehicles is “5 or more”, the range in which the information amount reduction process is performed is defined as “increasing narrowing degree”. The range definition table 22A is not limited to this.

  The range setting unit 34 sets a range in which the information amount reduction processing of the second range 110B of the display video data 110 is performed according to the number of recognized vehicles in the first range 110A of the display video data 110.

  Next, the flow of processing by the control unit 30 will be described with reference to FIG. Step S41, step S42, and step S46 to step S48 perform the same processing as step S31, step S32, and step S36 to step S38 of the fourth embodiment.

  The control unit 30 causes the recognition processing unit 35 to perform vehicle recognition of the first range 110A of the display video data 110 (step S43).

  The control unit 30 causes the recognition processing unit 35 to determine the number of recognized vehicles in the first range 110A of the display video data 110 (step S44).

  The control unit 30 causes the video processing unit 36 to determine whether or not the number of recognized vehicles in the first range 110A of the display video data 110 is greater than or equal to a predetermined value (step S45).

  Specifically, the case where the process by the control unit 30 is performed using the pattern example 1 of the range definition table 22A illustrated in FIG. 26 will be described.

  For example, a case where the number of recognized vehicles in the first range 110A of the display video data 110 is four will be described. The image processing unit 36 refers to the range definition table 22A, and acquires the information amount reduction processing range of the second range 110B corresponding to the number of recognized vehicles “1 to less than 5”, “no change”. Then, the video processing unit 36 performs an information amount reduction process for the entire second range 110B, and the display control unit 40 displays the display video data 120 as shown in FIG. Even if the information amount reduction process is performed for the entire second range 110B, since the number of vehicles in the display video data 110 is small, the driver can perform the first overtaking or overtaking by the vehicle recognized in the first range 120A. It is possible to recognize a vehicle moving from the range 120A to the second range 120B and appropriately confirm the rear. In FIG. 28, the boundary between the first range 120A and the second range 120B is indicated by a broken line, but the boundary is not actually displayed.

  For example, a case where the number of recognized vehicles in the first range 110A of the display video data 110 is five will be described. The image processing unit 36 refers to the range definition table 22A, and acquires the information amount reduction processing range of the second range 110B corresponding to the number of recognized vehicles “5 or more”, “in the narrowing degree”. Then, the video processing unit 36 performs information amount reduction processing for a part of the second range 110B, and the display control unit 40 displays the display video data 120 as shown in FIG. 29 on the rear view monitor 3. In order to narrow the second range 120B for reducing the amount of information, the driver recognizes a vehicle moving from the first range 120A to the second range 120B when overtaking or passing by the vehicle recognized in the first range 120A. , You can check back properly. In FIG. 29, the boundary between the first range 120A and the second range 120B is indicated by a broken line, but the boundary is not actually displayed.

  As described above, according to the present embodiment, the range in which the information amount reduction processing of the second range 110B of the display video data 110 is performed is changed according to the number of recognized vehicles in the first range 110A of the display video data 110. In the present embodiment, as the number of recognized vehicles in the first range 110A of the display video data 110 increases, the degree of narrowing of the range in which the information amount reduction processing of the second range 110B of the display video data 110 is performed is increased. As described above, according to the present embodiment, the degree of narrowing is changed in accordance with the number of recognized vehicles in the first range 110A of the display video data 110, and the amount of information in a range appropriate for the driver is reduced and displayed. can do. Thus, according to the present embodiment, the driver can appropriately check the periphery of the vehicle.

  Each component of the illustrated vehicle display system 1 is functionally conceptual, and may not necessarily be physically configured as illustrated. That is, the specific form of each device is not limited to the one shown in the figure, and all or a part of them is functionally or physically distributed or integrated in arbitrary units according to the processing load or usage status of each device. May be.

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

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

  For example, you may combine 4th embodiment or 5th embodiment, and 1st embodiment thru | or 3rd embodiment. For example, the case where 4th embodiment and 1st embodiment are combined is demonstrated. In this case, in step S37 in the flowchart shown in FIG. 23, the processes in steps S15 and S16 in the flowchart shown in FIG. 10 are performed. More specifically, the control unit 30 refers to the process definition table 21 based on the number of recognized vehicles determined by the recognition processing unit 35 in the video processing unit 36, and the information amount of the second range 110B corresponding to the number of recognized vehicles. Get reduction processing. And the control part 30 performs the information amount reduction process of the 2nd range 110B of the display video data 110 by the video process part 36 based on the information amount reduction process of the 2nd range 110B corresponding to the acquired recognition vehicle number. The amount of information is reduced for the range to be performed. Then, the control unit 30 causes the video processing unit 36 to output the generated display video data 120 to the display control unit 40. In this way, according to the number of recognized vehicles in the display video data 110, the range for performing the information amount reduction processing in the second range 110B of the display video data 110 is changed, and the information amount reduction degree is changed to change the driver. The amount of information appropriate for the user can be displayed.

  When recognizing the vehicle, the number of vehicles traveling in the same direction as the host vehicle may be determined. In this case, the recognition dictionary storage unit 4 stores a pattern such as the shape, size, and color of the front of the vehicle as a dictionary that can be collated. And the recognition process part 35 performs pattern matching using the recognition dictionary memorize | stored in the recognition dictionary memory | storage part 4 with respect to the display video data 110, and the presence of the vehicle which is drive | working the same direction as the own vehicle is shown. To detect. Thus, since the vehicle facing the host vehicle is excluded, the present embodiment can display a more appropriate amount of information for the driver.

  The process definition table 21 may define, for example, an information amount reduction process performed on the second range 110B for each number of recognized vehicles in the first range 110A of the display video data 110.

  For example, the range definition table 22 may define a range in which the information amount reduction process is performed on the second range 110B for each number of recognized vehicles in the second range 110B of the display video data 110. Here, the number of recognized vehicles in the second range 110B is the sum of the number of recognized vehicles in the second range 110B on the left side and the number of recognized vehicles in the second range 110B on the right side.

  Alternatively, the range definition table 22 defines, for example, a range in which information amount reduction processing is performed on the second range 110B for each number of recognized vehicles in the second range 110B on either the left side or the right side of the display video data 110. May be. In this case, the control unit 30 uses the video processing unit 36 to perform information amount reduction processing for each of the second range 110B on the left side and the second range 110B on the right side of the display video data 110 according to the number of recognized vehicles. Set.

  The process definition table 21 may define, for example, an information amount reduction process performed on the second range 110B for each recognized vehicle number for each lane. In this case, the control unit 30 performs image analysis on the display video data 110 in the recognition processing unit 35 to detect a lane. And the control part 30 performs the pattern matching using the recognition dictionary which the recognition dictionary memory | storage part 4 has memorize | stored for every detected lane, and detects presence of a vehicle. Then, the control unit 30 refers to the process definition table 21 based on the number of recognized vehicles for each lane determined by the recognition processing unit 35 in the video processing unit 36, and the second range corresponding to the number of recognized vehicles for each lane. 110B information amount reduction processing is acquired. And the control part 30 is information about the 2nd range 110B of the display video data 110 based on the information amount reduction process of the 2nd range 110B corresponding to the recognition vehicle number for every acquired lane in the image | video process part 36. Reduce the amount. Then, the control unit 30 causes the video processing unit 36 to output the generated display video data 120 to the display control unit 40. Thereby, according to the number of recognized vehicles for every lane of the display video data 110, the amount of information reduction can be changed, and the amount of information appropriate for the driver can be displayed.

  For example, the range definition table 22 may define a range in which the information amount reduction process is performed on the second range 110B for each number of recognized vehicles for each lane. In this case, the control unit 30 performs image analysis on the display video data 110 in the recognition processing unit 35 to detect a lane. And the control part 30 performs the pattern matching using the recognition dictionary which the recognition dictionary memory | storage part 4 has memorize | stored for every lane, and detects presence of a vehicle. Then, the control unit 30 refers to the range definition table 22 based on the number of recognized vehicles for each lane determined by the recognition processing unit 35 in the video processing unit 36, and the second range corresponding to the number of recognized vehicles for each lane. The range for performing the information amount reduction processing of 110B is acquired. And the control part 30 is the information of the 2nd range 110B of the display video data 110 based on the information amount reduction process range of the 2nd range 110B corresponding to the recognition vehicle number for every acquired lane in the video process part 36. The amount of information is reduced in the range where the amount reduction processing is performed. Then, the control unit 30 causes the video processing unit 36 to output the generated display video data 120 to the display control unit 40. Accordingly, the information amount appropriate for the driver is displayed by changing the range of the information amount reduction processing of the second range 110B of the display video data 110 according to the number of recognized vehicles for each lane of the display video data 110. be able to.

  The process definition table 21 and the range definition table 22 may be defined for each road. For example, the process definition table 21 and the range definition table 22 may be defined for each number of road lanes. For example, the process definition table 21 and the range definition table 22 may be defined for each width of the road. For example, the process definition table 21 and the range definition table 22 may be defined for each type of route including an expressway, a national road, or a prefectural road. In this case, for example, the control unit 30 analyzes the current location information of the host vehicle acquired using a GPS (Global Positioning System) receiver and the captured video data 100, thereby performing a road on which the host vehicle is traveling. Determine. Then, the control unit 30 refers to the process definition table 21 or the range definition table 22 corresponding to the road on which the host vehicle is running, and the information amount of the second range 110B corresponding to the number of recognized vehicles. The range for performing the reduction process or the information amount reduction process of the second range 110B is acquired.

DESCRIPTION OF SYMBOLS 1 Display system for vehicles 2 Rear camera 3 Rear view monitor (display device)
DESCRIPTION OF SYMBOLS 10 Display control apparatus for vehicles 30 Control part 31 Display video data generation part 32 Video data acquisition part 33 Cutout part 34 Range setting part 35 Recognition processing part 36 Video processing part 40 Display control part 100 Shooting video data 110 Display video data 110A 1st One range 110B Second range 120 Display video data 120A First range 120B Second range

Claims (13)

A display video data generating 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;
A range setting unit that sets a first range and a second range that is disposed on both sides of the first range and located on both sides of the display video data, with respect to the display video data,
A recognition processing unit that performs vehicle recognition on the display video data and determines the number of recognized vehicles;
Information amount reduction processing for reducing the amount of information obtained by the driver for the video data in the second range whose range is set by the range setting unit according to the number of vehicles determined by the recognition processing unit. A video processing unit for performing
A display control device for a vehicle, comprising: a display control unit that causes the display device to display the display video data on which the information amount reduction processing has been performed on the second range.   The video processing unit performs the information amount reduction processing in which the degree of reduction of the information amount with respect to the video data in the second range is increased as the number of the vehicles determined by the recognition processing unit is smaller. The vehicle display control device described in 1. The recognition processing unit performs vehicle recognition on the second range in the display video data,
The video processing unit increases the degree of reduction of the information amount with respect to the video data in the second range as the number of the vehicles in the second range determined by the recognition processing unit is small. The display control apparatus for vehicles of Claim 1 which performs.   4. The video processing unit according to any one of claims 1 to 3, wherein the video processing unit narrows a range in which the information amount reduction processing is performed on video data in the second range as the number of the vehicles determined by the recognition processing unit increases. The vehicle display control device according to one item. The recognition processing unit performs vehicle recognition on the first range in the display video data,
The video processing unit narrows a range in which the information amount reduction process is performed on video data in the second range as the number of the vehicles in the first range determined by the recognition processing unit increases. The display control apparatus for vehicles as described in any one of 1-3.   The vehicle display control device according to claim 1, wherein the recognition processing unit determines the number of the vehicles traveling in the same direction as the host vehicle in the display video data.   The vehicle display control apparatus according to any one of claims 1 to 6, wherein the video processing unit performs a process of reducing color information as the information amount reduction process for the video data in the second range.   The vehicle display control device according to claim 7, wherein the video processing unit performs monochromatic display as the information amount reduction processing for the video data in the second range.   The vehicle display control apparatus according to any one of claims 1 to 8, wherein the video processing unit performs a process of reducing luminance as the information amount reduction process for the video data in the second range.   The vehicle according to any one of claims 1 to 9, wherein the video processing unit includes a process of hiding the video data in the second range as the information amount reduction processing for the video data in the second range. Display controller. A vehicle display control device according to any one of claims 1 to 10,
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 video data generation step of acquiring captured video data from a rear camera that captures the rear of the vehicle and generating display video data to be displayed on a display device that displays the rear video of the vehicle;
A recognition processing step of performing vehicle recognition on the display video data and determining the number of recognized vehicles;
Depending on the number of vehicles determined in the recognition processing step, the video data of the second range is 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 step for performing information amount reduction processing for reducing the amount of information obtained by the driver;
A display control step of causing the display device to display the display video data on which the information amount reduction processing has been performed on the second range. A display video data generation step of acquiring captured video data from a rear camera that captures the rear of the vehicle and generating display video data to be displayed on a display device that displays the rear video of the vehicle;
A recognition processing step of performing vehicle recognition on the display video data and determining the number of recognized vehicles;
Depending on the number of vehicles determined in the recognition processing step, the video data of the second range is 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 step for performing information amount reduction processing for reducing the amount of information obtained by the driver;
A program for causing a computer operating as a vehicle display control device to execute a display control step of causing the display device to display the display video data on which the information amount reduction processing has been performed on the second range.

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