JP2010116124A - Display control system, display control method, and display control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display control system, a display control method and a display control program, capable of controlling optimally display of an image in response to a traveling state. <P>SOLUTION: This display control system 1 includes: a vehicle periphery camera 30 for acquiring the image in the periphery of the vehicle; a view field state information acquiring part 71a for acquiring view field state information for specifying a state about a view field of a driver of the vehicle; a display control part 71b for setting a cut-out range in the image, based on the view field state information; and a display 60 for displaying an image corresponding to the cut-out range out of the image. The display control system 1 is provided further with: the display control part 71b for changing the cut-out range, based on the view field state information, when a change of the view field state information is a threshold value or more; a vehicle state information acquiring part 71c for acquiring vehicle state information for specifying a state of the vehicle; and a threshold value setting part 71d for setting the threshold value, based on the vehicle state information. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

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

  2. Description of the Related Art Conventionally, a driving support device has been proposed that can display an image in accordance with a driver's posture on a pillar (hereinafter referred to as a pillar) that supports the ceiling of the vehicle. This driving support apparatus uses a camera attached to a vehicle to take an image of a blind spot area caused by a pillar, and displays the taken image on the inside of the pillar. At this time, the position of the head of the driver is detected, the angle of the blind spot is calculated according to the position of the head with respect to the pillar, and the image displayed inside the pillar is controlled (for example, see Patent Document 1).

JP 2008-22267 A

  By the way, how the driver's head moves during driving differs depending on the driving situation, for example, when driving straight ahead or turning left and right, the conventional apparatus as described above takes into account such differences due to the driving situation. Without detecting the position of the driver's head. For this reason, when the head is fibrillated, the image displayed inside the pillar is also fibrillated based on the detection result of the position of the head, which may cause discomfort to the driver. was there.

  The present invention has been made in view of the above, and an object of the present invention is to provide a display control system, a display control method, and a display control program capable of optimal display control of an image according to a traveling situation.

  In order to solve the above-described problems and achieve the object, the display control system according to claim 1 specifies a state related to a peripheral image acquisition unit that acquires an image of the periphery of the vehicle and a visual field of the driver of the vehicle. Viewing state information obtaining means for obtaining viewing state information, cutting range setting means for setting a cutting range in the image based on the viewing state information, and display for displaying an image corresponding to the cutting range among the images A display control system comprising: a cutting range changing unit configured to change the cutting range based on the visual field state information when the change in the visual field state information is equal to or greater than a threshold; and specifying the vehicle state Vehicle state information acquisition means for acquiring vehicle state information to be performed; and threshold value setting means for setting the threshold value based on the vehicle state information.

  The display control system according to claim 2 is the display control system according to claim 1, wherein the vehicle state information is speed information for specifying a speed of the vehicle.

  According to a third aspect of the present invention, in the display control system according to the first or second aspect, the vehicle state information is position information that specifies a current position of the vehicle.

  The display control system according to claim 4 is the display control system according to any one of claims 1 to 3, wherein the vehicle state information is steering information for specifying a steering angle of the steering of the vehicle. It is characterized by being.

  Moreover, the display control system according to claim 5 is the display control system according to any one of claims 1 to 4, wherein the visual field state information acquisition unit is configured to perform the visual field state information based on the vehicle state information. It is characterized by comprising sampling period setting means for setting a sampling period for acquiring the.

  The display control method according to claim 6 includes a peripheral image acquisition step of acquiring an image around the vehicle, and a visual field state information acquisition step of acquiring visual field state information for specifying a state related to the visual field of the driver of the vehicle. A display control method comprising: a cutout range setting step for setting a cutout range in the image based on the visual field state information; and a display step for causing a display unit to display an image corresponding to the cutout range among the images. A cut range changing step for changing the cut range based on the visual field state information when the change in the visual field state information is greater than or equal to a predetermined threshold; and vehicle state information for specifying the vehicle state. A vehicle state information acquisition step; and a threshold value setting step for setting the threshold value based on the vehicle state information.

  A display control program according to claim 7 causes a computer to execute the method according to claim 6.

  According to the display control system according to claim 1, the display control method according to claim 6, and the display control program according to claim 7, a threshold value in which a change in visual field state information is set based on vehicle state information In such a case, the cutout range in the image around the vehicle is changed based on the visual field state information, so that the cutout range can be set according to the driving situation and optimal display control according to the driving situation is performed. be able to.

  According to the display control system of the second aspect, since the vehicle state information is speed information for specifying the speed of the vehicle, different output control can be performed depending on the speed of the vehicle. For example, unnecessary fibrillation of the display means can be reduced by increasing the threshold during high-speed driving with a small movement of the driver's head.

  According to the display control system of the third aspect, since the vehicle state information is position information for specifying the current position of the vehicle, different output control can be performed depending on the current position of the vehicle. For example, it is possible to reduce unnecessary fibrillation of the display means by increasing the threshold value when driving on a highway where the driver's head is small, and in an intersection or parking lot where the driver's head moves largely By reducing the threshold value, it is possible to smoothly display an image on the display means following the movement of the driver's head.

  According to the display control system of the fourth aspect, since the vehicle state information is steering information for specifying the steering angle of the vehicle steering, different output control can be performed depending on the steering angle of the vehicle steering. . For example, unnecessary fibrillation of the display means can be reduced by increasing the threshold when the steering angle is small.

  According to the display control system of the fifth aspect, since the visual field state information acquisition unit sets the sampling period for acquiring the visual field state information based on the vehicle state information, an appropriate sampling period according to the traveling state Visual field state information can be acquired. For example, by increasing the sampling period during high-speed traveling, it is possible to prevent the cutout range from changing due to a momentary driver's look.

  Hereinafter, embodiments of a display control system, a display control method, and a display control program according to the present invention will be described in detail with reference to the drawings. However, the present invention is not limited to each embodiment.

[Embodiment 1]
First, the first embodiment will be described. In this form, a threshold value for changing the cutout range is set.

(Constitution)
FIG. 1 is a block diagram illustrating a display control system according to the first embodiment. As shown in FIG. 1, the display control system 1 includes a steering sensor 10, a vehicle speed sensor 20, a vehicle surrounding camera 30, a driver camera 40, a current location detection processing unit 50, a display 60, and a display control device 70.

(Configuration-steering sensor)
The steering sensor 10 detects the steering angle of the steering wheel of the vehicle and outputs the detected value to the display control device 70, and a known steering sensor can be used.

(Configuration-vehicle speed sensor)
The vehicle speed sensor 20 outputs the rotational speed of the wheels to the display control device 70, and a known vehicle speed sensor can be used.

(Configuration-Vehicle Perimeter Camera)
The vehicle peripheral camera 30 is a peripheral image acquisition unit that acquires a peripheral image of the vehicle. In the vehicle periphery camera 30, for example, the front pillar outside of the driver's seat side (except where otherwise specified below, “front pillar” is simply referred to as “pillar”. Also, the side facing the outside of the vehicle is “outside”. One or a plurality of cameras are installed on the side facing the inside of the vehicle and referred to as “inside”, and the front and sides of the vehicle are photographed. Video data acquired by the vehicle periphery camera 30 is output to the display control device 70. The specific configuration of the vehicle peripheral camera 30 is arbitrary, and is configured using a known imaging device such as a CMOS image sensor or a CCD image sensor, and a known optical system component such as a fisheye lens or a prism.

(Configuration-Driver camera)
The driver camera 40 is for taking a driver image. The driver camera 40 is installed, for example, on the inside of the pillar or on the ceiling inside the vehicle, and photographs the head of the driver. The video data acquired by the driver camera 40 is output to the display control device 70. The specific configuration of the driver camera 40 is arbitrary, and is configured using a known imaging device and a known optical system component, as with the vehicle peripheral camera 30.

(Configuration-Current location detection processing unit)
The current position detection processing unit 50 is current position detection means for detecting the current position of the vehicle to which the display control device 70 is attached. Specifically, the current location detection processing unit 50 has at least one of a GPS, a geomagnetic sensor, a distance sensor, and a gyro sensor (all of which are not shown) and knows the current vehicle position (coordinates), direction, and the like. The method is detected.

(Configuration-Display)
The display 60 is a display unit that displays an image corresponding to the cutout range set by the display control device 70 among images around the vehicle. The display 60 is disposed, for example, toward the driver's seat inside the pillar in front of the vehicle, and displays the image data output from the display control device 70. The specific configuration of the display 60 is arbitrary, and a flat panel display such as a known liquid crystal display or organic EL display can be used. Alternatively, image data can be displayed on the screen by projecting projection light onto the screen from a projector provided at an arbitrary position inside the vehicle using the inside of the pillar or the ceiling as a screen.

(Configuration-Display control device)
The display control device 70 includes a control unit 71 and a data recording unit 72.

(Configuration-Display control device-Control unit)
The control unit 71 is a control unit that controls the display control device 70. Specifically, the CPU, various programs interpreted and executed on the CPU (a basic control program such as an OS, and a program that is started and specified on the OS). And an internal memory such as a RAM for storing the program and various data. In particular, the display control program according to the present embodiment is installed in the display control device 70 via an arbitrary recording medium or network, thereby substantially configuring each unit of the control unit 71.

  The control unit 71 includes a visual field state information acquisition unit 71a, a display control unit 71b, a vehicle state information acquisition unit 71c, and a threshold setting unit 71d in terms of functions. The visual field state information acquisition unit 71a is visual field state information acquisition means for acquiring visual field state information that specifies a state related to the visual field of the driver of the vehicle. The display control unit 71b is a cutting range setting unit that sets a cutting range in an image around the vehicle based on the visual field state information. When the change in the visual field state information is equal to or greater than a threshold value, the display control unit 71b It is a cutting range changing means for changing the range, and is a display control means for controlling the output of the display 60. The vehicle state information acquisition unit 71c is a vehicle state information acquisition unit that acquires vehicle state information that specifies the state of the vehicle. The threshold setting unit 71d is threshold setting means for setting a threshold based on the vehicle state information. Here, the “field of view” is the range that is visible to the driver and changes in conjunction with the driver's head position, face direction, line-of-sight direction, etc., so the state related to the driver's field of view is specified. The “visual field state information” that is information to be acquired is acquired based on, for example, an image photographed by the driver camera 40, such as the head position, face direction, line-of-sight direction of the driver. The “threshold value” is a value of visual field state information that serves as a reference as to whether or not the display control unit 71b changes the cutout range. For example, threshold values are set for the change amount of the head position coordinates of the driver, the change amount of the face direction vector, etc., and when the change amount is equal to or larger than the set threshold value, the display control unit 71b changes the cut range. Can be performed. “Vehicle state information” is information for specifying the state of the vehicle, and includes, for example, information for specifying the vehicle speed, the steering angle of the steering, the current position of the vehicle, and the like. Details of processing executed by each component of the control unit 71 will be described later.

(Configuration-Display control device-Data recording unit)
The data recording unit 72 is a recording unit that records a program and various data necessary for the operation of the display control device 70, and is configured using, for example, a hard disk (not shown) as an external storage device. However, any other recording medium including a magnetic recording medium such as a magnetic disk or an optical recording medium such as a DVD or a Blu-ray disk can be used instead of or together with the hard disk.

  The data recording unit 72 includes a control table 72a and a map information database 72b (hereinafter, the database is referred to as “DB”). The control table 72a is used for reference when the display control unit 71b executes output control of the display 60. FIG. 2 is a table illustrating information stored in the control table 72a. As shown in FIG. 2, the control table 72 a includes items “vehicle state” and item “visual field state information threshold” as table items, and information corresponding to these items is stored in association with each other. The information stored corresponding to the item “vehicle state” is vehicle state information, for example, speed information for specifying the speed of the vehicle, position information for specifying the current position of the vehicle, and a steering angle of the steering of the vehicle. Vehicle state information such as steering information can be stored (in FIG. 2, “vehicle speed” is “more than 50 km / h”, “less than 50 km / h”, or “current position” is “inside intersection”, “outside intersection” etc). The information stored corresponding to the item “field-of-view state information threshold” is a value serving as a reference as to whether or not the display control unit 71b changes the cutout range. For example, the information is displayed by the display control unit 71b for the display 60. The amount of change in the head position of the driver that triggers the start of output control can be stored (in FIG. 2, when “vehicle speed” is “less than 50 km / h”, “1 cm”, “50 km / h or more” "5cm" etc.).

  Returning to FIG. 1, the map information DB 72b is map information storage means for storing map information. “Map information” is information necessary for specifying the position of intersections, expressways, parking lots, etc., for example, intersection data (intersection coordinates, etc.), road data (road type, number of lanes, speed limit, road coordinates) , Road numbers, etc.) and map display data for displaying a map on a monitor (not shown).

(processing)
Next, processing executed by the display control system 1 configured as described above will be broadly described as threshold setting processing and display control processing.

(Processing-threshold setting processing)
First, the threshold setting process will be described. FIG. 3 is a flowchart of the threshold setting process (in the following description of each process, step is abbreviated as “S”). This threshold value setting process is automatically started after the engine of the host vehicle is started, for example. After the engine is started, the vehicle state information acquisition unit 71c acquires vehicle state information such as a steering angle, a vehicle speed, and a current position via the steering sensor 10, the vehicle speed sensor 20, the current position detection processing unit 50, and the like (SA1). . Moreover, the position of the own vehicle on a map is pinpointed based on the acquired vehicle state information and the map information stored in map information DB72b (SA2).

  Subsequently, the threshold setting unit 71d refers to the control table 72a, and based on the vehicle state information acquired by the vehicle state information acquisition unit 71c and the position of the host vehicle on the map, a cutout range by the display control unit 71b for the display 60 A change threshold is determined, and the threshold is set in the display control unit 71b (SA3). The determination criterion of this threshold is arbitrary. For example, in FIG. 2, all conditions that the vehicle speed is 50 km / h or more, the current position is outside the intersection or a highway, and the steering angle of the steering is less than 10 degrees. Is satisfied, the threshold value is determined to be 5 cm. In other cases, for example, when the vehicle speed is less than 50 km / h, or when the current position is within the intersection, the threshold value can be determined to be 1 cm. Further, the threshold value may be determined based on any one of the vehicle speed, the current position, and the steering angle of the steering wheel, or the largest threshold value among the threshold values corresponding to the vehicle state information may be adopted, You may employ | adopt the average value of the threshold value corresponding to vehicle state information. For example, when the vehicle speed is less than 50 km / h, the current position is within an intersection, and the steering angle of the steering is less than 10 degrees, the threshold corresponding to the vehicle speed and the current position is 1 cm, and the threshold corresponding to the steering angle is 5 cm. Therefore, when the most threshold value is adopted, the threshold value = 1 cm is adopted, and when the average value is adopted, the threshold value = 7/3 = 2.3 cm is adopted. Thereafter, SA1 to SA3 are similarly repeated.

(Processing-Display control processing)
Next, the display control process will be described. FIG. 4 is a flowchart of the display control process. This display control process is started, for example, every predetermined period (for example, every 0.2 seconds) after the engine of the host vehicle is started simultaneously with the threshold setting process. After the display control process is activated, the display control unit 71b causes the vehicle periphery camera 30 to acquire an image around the vehicle (SB1). Next, the visual field state information acquisition unit 71a acquires visual field state information such as the head position of the driver via the driver camera 40 (SB2).

  The display control unit 71b determines whether or not an image is displayed on the display 60 (SB3). For example, immediately after the display control process is started, if the image is not displayed (SB3, No), the vehicle peripheral camera A cut range corresponding to the visual field state information in the image acquired by 30 is set, and the set cut range is stored in a RAM or the like (SB4). When setting the cutout range, the display control unit 71b calculates the blind spot of the driver visual field generated by being shielded by a pillar or the like based on the head position of the driver acquired in SB2, for example. Then, a range corresponding to the calculated blind spot is set as a cutout range in an image captured by the vehicle peripheral camera 30.

  On the other hand, when an image is already displayed on the display 60 (SB3, Yes), the display control unit 71b uses the threshold value set in SA3 of the threshold setting process as a reference and the value of the visual field state information acquired in SB2. It is determined whether or not the difference value with the value of the visual field state information acquired last time is equal to or greater than the threshold value (SB5). As a result, when the difference value with the value of the visual field state information acquired last time is equal to or greater than the threshold (SB5, Yes), the display control unit 71b uses the visual field state that has been acquired this time in SB2 as the already set cutting range. The change is made based on the information, and the changed cut range is stored in the RAM or the like (SB6). In addition, when the difference value with the value of the visual field state information acquired last time is less than the threshold value (SB5, No), the cutting range stored in the previous process is read from the RAM or the like, and is read by the vehicle peripheral camera 30. It is set as a cutout range in the photographed image (SB7).

  After the process of SB4, SB5, or SB7, the display control unit 71b extracts an image corresponding to the set clipping range from the image taken by the vehicle peripheral camera 30 (SB8), and displays the extracted image on the display. 60 is displayed (SB9). Thereafter, similarly, SB1 to SB9 are repeated.

  Thus, when the vehicle speed is high or the vehicle is traveling on a highway, the threshold is increased when the driver is gazing at the front of the vehicle and the head movement is small. Therefore, it is possible to reduce the unnecessary motion of the screen following the slight movement of the driver's head, and to reduce discomfort given to the driver. On the other hand, when the driver's head movement increases to pay attention to the left and right of the vehicle, such as when the vehicle speed is low or when driving at an intersection, the threshold value is reduced to reduce the driver's head movement. The image can be smoothly displayed on the display 60 by following the driver, and appropriate driving support can be provided to the driver.

(effect)
As described above, according to the first embodiment, when the change in the visual field state information is equal to or greater than the predetermined threshold value changed based on the vehicle state information, the cropping in the image around the vehicle is performed based on the visual field state information. Since the display control unit 71b changes the range, the cutout range can be changed based on a different visual field state depending on the traveling state, and optimal display control corresponding to the traveling state can be performed.

  Further, since the vehicle state information is speed information for specifying the speed of the vehicle, it is possible to perform output control that takes into account how the head of the driver varies depending on the speed of the vehicle. For example, unnecessary fibrillation of the display 60 can be reduced by, for example, increasing the threshold value during high-speed traveling with a small movement of the head of the driver, compared to during low-speed traveling.

  Further, since the vehicle state information is position information for specifying the current position of the vehicle, output control can be performed in consideration of how the head of the driver varies depending on the current position of the vehicle. For example, unnecessary fibrillation of the display 60 can be reduced by increasing the threshold value when driving on a highway where the driver's head movement is small compared to driving on a general road, and the driver's head movement is large. By reducing the threshold value in an intersection or in a parking lot, the image can be smoothly displayed on the display 60 following the movement of the driver's head.

  In addition, since the vehicle state information is steering information that specifies the steering angle of the vehicle steering, output control can be performed in consideration of the way the head of the driver varies depending on the steering angle of the vehicle steering. . For example, unnecessary fibrillation of the display 60 can be reduced by increasing the threshold value when the steering angle of the steering where the head of the driver is small is smaller than when the steering angle is large.

[Embodiment 2]
Next, a second embodiment will be described. This form is a form in which the visual field state information acquisition means sets the sampling period for acquiring the visual field state information in accordance with the traveling state. The configurations of the second embodiment and the subsequent embodiments are substantially the same as the configurations of the first embodiment unless otherwise specified, and this configuration is substantially the same as the configuration of the first embodiment. The same reference numerals and / or names as those used in Embodiment 1 are attached as necessary, and the description thereof is omitted.

(Configuration-Display control device-Control unit)
First, the configuration of the display control system 1 according to the second embodiment will be described. The control unit 71 according to the second embodiment includes a sampling period setting unit in terms of functional concept in addition to each component of the control unit 71 described in the first embodiment. The sampling cycle setting unit is a sampling cycle setting unit that sets a sampling cycle in which the visual field state information acquisition unit 71a acquires the visual field state information. Details of processing executed by each component of the control unit 71 will be described later.

(Configuration-Display control device-Control table)
FIG. 5 is a table illustrating information stored in the control table 72a. As shown in FIG. 5, the control table 72a according to the second embodiment includes an item “sampling period” in addition to the table items included in the control table 72a of the first embodiment, and information corresponding to these items is an item. It is stored in association with the information stored in “vehicle state”. The information stored corresponding to the item “sampling cycle” is a cycle in which the visual field state information acquisition unit 71a acquires the visual field state information. For example, when “vehicle speed” is “less than 50 km / h”, “0. In the case of “2 sec”, “50 km / h or more”, a value such as “3 sec” can be stored.

(processing)
Next, processing executed by the display control system 1 according to Embodiment 2 will be described. In the second embodiment, the process executed by the display control system 1 is roughly divided into a sampling period setting process and a display control process. Hereinafter, each process will be described.

(Processing-Sampling cycle setting process)
First, the sampling cycle setting process will be described. Note that the sampling cycle setting process in the second embodiment is the same as the threshold setting process described in the first embodiment except for the contents described below, and thus the illustration of the flowchart is omitted. When the threshold setting unit 71d determines and sets the threshold in SA3 of the threshold setting process described in the first embodiment, the sampling period setting unit refers to the control table 72a, and the vehicle state acquired by the vehicle state information acquisition unit 71c. Based on the information and the position of the host vehicle, the visual field state information acquisition unit 71a determines the sampling period T for acquiring the visual field state information, and sets the sampling period T in the visual field state information acquisition unit 71a. For example, in FIG. 5, the sampling period is set when all the conditions that the vehicle speed is 50 km / h or more, the current position is outside the intersection or the highway, and the steering angle of the steering is less than 10 degrees are satisfied. The unit determines the sampling period T to be 3 sec. Similarly to the determination of the threshold value in the first embodiment, the sampling period T may be determined based on any one of the vehicle speed, the current position, and the steering angle of the steering wheel. The most common value or average value in the corresponding sampling period T may be adopted.

(Processing-Display control processing)
Next, the display control process will be described. FIG. 6 is a flowchart of the display control process. Note that the contents of each process from SC7 to SC11 in the display control process according to the second embodiment are the same as the processes from SB5 to SB9 in the display control process according to the first embodiment described above. The detailed explanation is omitted.

  For example, when the display control process is started at a predetermined period (for example, every 0.2 seconds) after the engine of the host vehicle is started simultaneously with the sampling period setting process, the display control unit 71b is Are acquired (SC1). Next, the display control unit 71b determines whether an image is displayed on the display 60 (SC2), and when the image is already displayed on the display 60 (SC2, Yes), the visual field state information acquisition unit 71a. Is compared with the timer value n of the timer that counts the elapsed time from when the visual field state information was acquired last time and the sampling period T set in the sampling period setting process (SC3).

  As a result, when the timer value n is equal to or greater than the sampling period T (SC3, Yes), or when no image is displayed on the display 60 in SC2 (SC2, No), the timing for obtaining visual field state information has arrived. The visual field state information acquisition unit 71a resets the timer value (SC4), starts timer measurement (SC5), and acquires visual field state information such as the head position of the driver via the driver camera 40. (SC6). Thereafter, the display control unit 71b determines whether or not the difference value between the value of the visual field state information acquired in SC5 and the value of the visual field state information acquired last time is equal to or greater than a threshold value (SC7).

  On the other hand, when the timer value n is less than the sampling period T (SC3, No), the cutout range stored in the previous process is read from the RAM or the like, and the cutout range in the image taken by the vehicle peripheral camera 30 is read. Set (SC9). Thereafter, similarly, SC1 to SC11 are repeated at a predetermined cycle (for example, every 0.2 seconds).

  Thus, when the vehicle speed is high or the vehicle is traveling on a highway, the display 60 is increased by increasing the sampling period when the driver is gazing at the front of the vehicle and the head movement is small. Unnecessary fibrillation of the image displayed on the screen can be reduced, and discomfort given to the driver can be reduced. On the other hand, the movement of the driver's head can be reduced by reducing the sampling period when the movement of the head increases because the driver pays attention to the left and right sides of the vehicle, such as when the vehicle speed is low or when driving at an intersection. Accordingly, the video can be smoothly displayed on the display 60, and appropriate driving assistance can be provided to the driver.

(effect)
As described above, according to the second embodiment, since the visual field state information acquisition unit 71a sets the sampling period for acquiring the visual field state information based on the vehicle state information, the visual field state is set at an appropriate sampling period according to the traveling state. Information can be acquired. For example, by increasing the sampling period during high-speed traveling, it is possible to prevent the cutout range from changing due to a momentary driver's look.

[Modifications to Embodiments]
Although the embodiments of the present invention have been described above, the specific configuration and means of the present invention are arbitrarily modified and improved within the scope of the technical idea of each invention described in the claims. be able to. Hereinafter, such a modification will be described.

(About problems to be solved and effects of the invention)
First, the problems to be solved by the invention and the effects of the invention are not limited to the above-mentioned contents, and may vary depending on the implementation environment and details of the configuration of the invention. May be solved, or only some of the effects described above may be achieved.

(About threshold setting processing and display control processing)
In the second embodiment, it has been described that when the threshold setting unit 71d determines and sets the threshold in the threshold setting process described in the first embodiment, the sampling cycle setting unit sets the sampling cycle. Alternatively, only the sampling period may be set, and the visual field state information acquisition unit 71a may acquire the visual field state information based on the set sampling period.

(About the control table)
Specific setting contents of the control table 72a can be arbitrarily changed. For example, the operation state of the direction indicator may be added as the vehicle state, and when the direction indicator is operated, the threshold value or the sampling period is made smaller than when the direction indicator is not operated. May be. Further, the threshold value or the sampling period may be set as a relative value with respect to a reference value (default value) instead of an absolute value.

1 is a block diagram illustrating a display control system according to a first embodiment of the present invention. It is the table | surface which illustrated the information stored in the control table. It is a flowchart of a threshold value setting process. It is a flowchart of a display control process. It is the table | surface which illustrated the information stored in the control table. It is a flowchart of a display control process.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display control system 10 Steering sensor 20 Vehicle speed sensor 30 Vehicle periphery camera 40 Driver camera 50 Present location detection process part 60 Display 70 Display control apparatus 71 Control part 71a Visual field state information acquisition part 71b Display control part 71c Vehicle state information acquisition part 71d Threshold setting Unit 72 Data recording unit 72a Control table 72b Map information DB

Claims (7)

Peripheral image acquisition means for acquiring an image around the vehicle;
Visual field state information acquisition means for acquiring visual field state information for specifying a state related to the visual field of the driver of the vehicle;
A cutting range setting means for setting a cutting range in the image based on the visual field state information;
A display control system comprising: display means for displaying an image corresponding to the cutout range of the image,
Cutting range changing means for changing the cutting range based on the visual field state information when the change in the visual field state information is a threshold value or more,
Vehicle state information acquisition means for acquiring vehicle state information for specifying the state of the vehicle;
Threshold setting means for setting the threshold based on the vehicle state information;
A display control system comprising: The vehicle state information is speed information for specifying a speed of the vehicle;
The display control system according to claim 1. The vehicle state information is position information for specifying a current position of the vehicle;
The display control system according to claim 1 or 2. The vehicle state information is steering information for specifying a steering angle of the steering of the vehicle;
The display control system according to any one of claims 1 to 3, wherein: Based on the vehicle state information, the visual field state information acquisition unit includes a sampling period setting unit that sets a sampling period for acquiring the visual field state information;
The display control system according to any one of claims 1 to 4, wherein: A peripheral image acquisition step of acquiring an image around the vehicle;
Visual field state information acquisition step for acquiring visual field state information for specifying a state related to the visual field of the driver of the vehicle;
A cutting range setting step for setting a cutting range in the image based on the visual field state information;
A display step of displaying on the display means an image corresponding to the cutout range of the image,
A cutting range changing step of changing the cutting range based on the visual field state information when the change in the visual field state information is a predetermined threshold or more,
Vehicle state information acquisition step for acquiring vehicle state information for specifying the state of the vehicle;
A threshold setting step for setting the threshold based on the vehicle state information;
A display control method comprising:   A display control program for causing a computer to execute the method according to claim 6.

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