WO2019049237A1

WO2019049237A1 - Information display control device, information display device, and information display control method

Info

Publication number: WO2019049237A1
Application number: PCT/JP2017/032106
Authority: WO
Inventors: 悠希住吉
Original assignee: 三菱電機株式会社
Priority date: 2017-09-06
Filing date: 2017-09-06
Publication date: 2019-03-14

Abstract

In a case where the speed of a vehicle is equal to or lower than a predetermined speed, and where a maximum parallax amount distance (122), which is a distance of visual recognition during displaying of a display image having the maximum parallax amount on an HUD device (100), falls within the depth of field, a control unit (15) controls the parallax amount of a display image generated by an image generating unit (16) to a value greater than zero.

Description

INFORMATION DISPLAY CONTROL DEVICE, INFORMATION DISPLAY DEVICE, AND INFORMATION DISPLAY CONTROL METHOD

The present invention relates to an information display control device for controlling a head-up display (hereinafter referred to as "HUD") device, an information display device, and an information display control method.

Conventionally, AR (Augmented Reality) technology using a HUD or the like is known. Also known as a HUD is a three-dimensional (3D) -HUD that adjusts the position at which an image is recognized by controlling parallax.

The information display control device described in Patent Document 1 controls the parallax of the 3D image in accordance with at least one of the state of the vehicle, the information on the road on which the vehicle travels, and the like. The information display control device increases the parallax when the vehicle speed is high or the distance from the vehicle to the image is long, and reduces the parallax when the vehicle speed is low or the distance from the vehicle to the image is short.

According to the 3D display technology described in Non-Patent Document 1, even if the distance from the driver to the image is as close as 2 m, motion parallax becomes effective if the vehicle speed is 20 km / h or more. The driver perceives the image farther than the distance 2 m to the actual image.

JP, 2015-65614, A

If the driver visually recognizes the 3D image for a long time, it is possible that a sickness or the like may occur. In the information display control device described in Patent Document 1, since it is assumed that the display time of the 3D image becomes long, there is a problem that the driver experiences a sickness or the like.

Non-Patent Document 1 does not mention how to display an image in a situation where motion parallax under a vehicle speed of 20 km / h is invalid.

The present invention has been made to solve the above-described problems, and in order to prevent the occurrence of motion sickness or the like when a vehicle occupant views the display of the head-up display device, the display time of the 3D image is minimized. The aim is to limit the

The information display control device according to the present invention is an information display control device for controlling a head-up display device that causes a display image to be viewed stereoscopically or planarly, and includes a speed acquisition unit that acquires information indicating the speed of the vehicle, and The depth of field of the object viewed from the occupant of the vehicle is estimated based on the distance acquiring unit that acquires information indicating the distance to the object present in the traveling direction of the vehicle and the distance from the vehicle to the object A depth of field estimation unit, an image generation unit for generating a display image displayed in a state of being added to an object by a head-up display device, and a vehicle speed equal to or lower than a predetermined speed When the maximum parallax amount distance, which is the distance viewed when the display image having the parallax amount is displayed on the head-up display device, is within the depth of field, the image generation unit In which a control unit for controlling the amount of parallax of the displayed image more generated to a value greater than zero.

According to the present invention, when the speed of the vehicle is equal to or less than a predetermined speed, and the maximum parallax distance of the head-up display device is within the depth of field, the parallax amount of the display image is a value larger than zero. Because it controls to, it is possible to minimize the display time of 3D image.

FIG. 1 is a block diagram showing a configuration example of an information display device according to Embodiment 1. FIG. 2 is a diagram showing an example of the configuration of a HUD device controlled by the information display control device according to the first embodiment. 5 is a diagram showing an example of a depth of field table in Embodiment 1. FIG. 4A and 4B are diagrams showing examples of display images in the first embodiment. FIG. 5A and FIG. 5B are diagrams for explaining an outline of a control method of the parallax amount by the control unit of the first embodiment. 5 is a flowchart showing an operation example of the information display control device according to the first embodiment. 10 is a flowchart showing an operation example of the information display control device in accordance with Embodiment 2. FIG. 16 is a block diagram showing an example of configuration of an information display device according to Embodiment 3. FIG. 18 is a diagram showing an example of a depth of field table in the third embodiment. 15 is a flowchart showing an operation example of the information display control device in accordance with the third embodiment. FIG. 18 is a block diagram showing an example of configuration of an information display device according to Embodiment 4. 21 is a flowchart showing an operation example of the information display control device in accordance with Embodiment 4. FIG. 13A and FIG. 13B are diagrams showing an example of a hardware configuration of the information display device according to each embodiment.

Hereinafter, in order to explain the present invention in more detail, a mode for carrying out the present invention will be described according to the attached drawings.
Embodiment 1
FIG. 1 is a block diagram showing an example of the configuration of the information display apparatus according to the first embodiment. As shown in FIG. 1, the information display device according to the first embodiment controls the display of the HUD device 100 mounted on a vehicle. The information display control device 10 includes a speed acquisition unit 11, a distance acquisition unit 12, a depth of field estimation unit 13, a control unit 15, and an image generation unit 16. Further, in the example of FIG. 1, the information display control device 10 is provided with a depth of field table 14.

FIG. 2 is a diagram showing a configuration example of the HUD device 100 controlled by the information display control device 10 according to the first embodiment. The HUD device 100 shown in FIG. 2 includes a display unit 101, a drive unit 102, a reflecting mirror 103, and a lens 104. The HUD device 100 is disposed, for example, inside a dashboard of a vehicle. The display unit 101 includes a liquid crystal display or the like for displaying a display image generated by the image generation unit 16, and a parallax barrier or a lenticular lens or the like disposed in front of the liquid crystal display or the like. The drive unit 102 is a drive mechanism for changing the posture of the reflecting mirror 103. The drive unit 102 will be described in detail in the fourth embodiment. The reflecting mirror 103 reflects the display image displayed on the display unit 101. The lens 104 enlarges or reduces the display image reflected by the reflecting mirror 103. The optical members such as the reflecting mirror 103 and the lens 104 project the display image displayed on the display unit 101 onto the windshield 105 or a combiner (not shown).

The HUD device 100 is a 3D-HUD, and realizes an AR (Augmented Reality) display by displaying a 2D image or a 3D image superimposed on an actual landscape. The display image projected on the windshield 105 or the like is visually recognized by the occupant of the vehicle in a state of being superimposed on the landscape ahead of the vehicle through the windshield 105. In the following, a driver 120 is used as an example of a passenger. When the parallax amount between the right-eye image and the left-eye image constituting the display image is zero, the display image is visually recognized as a 2D image at the position of the virtual image distance 121. That is, the driver 120 views the display image in plan view. When the parallax amount between the right-eye image and the left-eye image constituting the display image is larger than zero, the display image is visually recognized as a 3D image at a position farther from the virtual image distance 121 as the parallax amount is larger. That is, the driver 120 stereoscopically views the display image. Here, the virtual image distance 121 at which the HUD device 100 displays the display image, that is, the distance at which the driver 120 recognizes a 2D image with zero parallax amount is 3 m, and the display image with the maximum parallax amount is a 3D image. A distance to be visually recognized (hereinafter, referred to as “maximum parallax amount distance 122”) is 10 m. The virtual image distance 121 and the maximum disparity distance 122 are distances dependent on the HUD device 100, and are not limited to 3 m and 10 m. The virtual image distance 121 and the maximum parallax distance 122 are assumed to be given to the control unit 15 in advance.

The speed acquisition unit 11 illustrated in FIG. 1 acquires information indicating the speed of the vehicle from a CAN (Controller Area Network) 111 or the like, and outputs the information to the control unit 15.

The distance acquisition unit 12 acquires information indicating the distance between an object present in the traveling direction of the vehicle and the vehicle from at least one of the car navigation device (hereinafter referred to as "car navigation") 112 or the external sensor 113, Output to 15. The car navigation system 112 detects, as an object, the nearest intersection or the like present on the planned travel route of the vehicle using the map information, calculates the distance from the vehicle to the object, and outputs the distance to the distance acquisition unit 12. The out-of-vehicle sensor 113 detects another vehicle or a pedestrian or the like existing in the traveling direction of the vehicle as an object using a camera or a distance sensor, and calculates the distance from the vehicle to the object to the distance acquisition unit 12 Output. The means for calculating the distance from the vehicle to the object is not limited to the car navigation 112 and the outside sensor 113.

The depth of field estimation unit 13 receives the information indicating the distance from the vehicle to the object acquired by the distance acquisition unit 12 via the control unit 15. The depth of field estimation unit 13 estimates the depth of field of the object viewed from the driver based on the distance from the vehicle to the object, and outputs the estimated depth to the control unit 15. The depth of field is a distance range in which it is assumed that the driver's eye is in focus when the driver is looking at an object. In the example of FIG. 1, the depth of field estimation unit 13 estimates the depth of field with reference to the depth of field table 14 included in the information display control device 10.

FIG. 3 is a diagram showing an example of the depth of field table 14 according to the first embodiment. The depth of field table 14 stores the distance from the vehicle to the object and the depth of field in association with each other. For example, when the distance from the vehicle to the object is 100 m, the depth of field estimation unit 13 estimates the depth of field to be 10 to 100 m with reference to the depth of field table 14. When looking at an object 100 m ahead, the driver can view the object simultaneously with the object without discomfort as long as the object exists at a distance of 10 to 100 m ahead.

The depth of field estimation method of the depth of field estimation unit 13 is not limited to the above method. For example, the depth of field estimation unit 13 may estimate the depth of field using a mathematical expression that defines the relationship between the distance from the vehicle to the object and the depth of field.

The control unit 15 receives information indicating the speed of the vehicle from the speed acquisition unit 11, receives information indicating the distance from the vehicle to the object from the distance acquisition unit 12, and estimates the information indicating the depth of field to the depth of field Received from Part 13. The control unit 15 controls the parallax amount of the display image displayed on the display unit 101 of the HUD device 100 based on at least one of the speed of the vehicle, the distance from the vehicle to the object, or the depth of field. . The control unit 15 outputs information on the amount of parallax to the image generation unit 16. Details of the control unit 15 will be described later.

The image generation unit 16 generates a display image to be displayed in a state of being added to the object, and outputs the display image to the display unit 101 of the HUD device 100 for display. At this time, the image generation unit 16 combines the right-eye image and the left-eye image based on the amount of parallax received from the control unit 15 to generate a display image.

4A and 4B show examples of the

display images

123 and 124 in the first embodiment. When the target is an intersection as shown in FIG. 4A, the image generator 16 generates an arrow or the like indicating the traveling direction at the intersection as the display image 123. The display image 123 displayed by the HUD device 100 is viewed in a superimposed state at the intersection via the windshield 105. As shown in FIG. 4B, when the object is another vehicle or a pedestrian or the like, the image generation unit 16 generates, as the display image 124, a numerical value or the like indicating the distance from the vehicle to the other vehicle or the pedestrian. The display image 124 displayed by the HUD device 100 is viewed in a state of being added to another vehicle or a pedestrian or the like through the windshield 105. The

display images

123 and 124 are not limited to, for example, an arrow indicating the traveling direction and a numerical value indicating the distance to the object. As described later, the

display images

123 and 124 may be 2D images or 3D images.

Next, an outline of a control method of the parallax amount by the control unit 15 will be described with reference to FIGS. 2, 5A, and 5B.
FIG. 5A and FIG. 5B are diagrams for explaining an outline of a control method of the parallax amount by the control unit 15 of the first embodiment.

(1) When the speed of the vehicle is higher than the predetermined speed The predetermined speed is a speed at which the motion parallax becomes effective, for example, 20 km / h. The predetermined speed is assumed to be given to the control unit 15. In the case of (1), the control unit 15 sets the parallax amount of the display image to zero. The HUD device 100 displays a 2D image without parallax at the virtual image distance 121. Even when the HUD device 100 displays a 2D image at a virtual image distance 121 close to the driver 120, the motion parallax causes the driver 120 to feel that the 2D image is farther than the virtual image distance 121. Therefore, even if the object is farther than the virtual image distance 121, the driver 120 does not feel a difference in distance between the 2D image and the object. Thus, the driver 120 can easily view a 2D image.

(2) In the case where the speed of the vehicle is equal to or less than the above-mentioned predetermined speed: As shown in FIG. 5A, (2A) the maximum parallax amount distance 122 is out of the depth of field of the object as shown in FIG. As in 5B (2B), the parallax amount is changed in the case where the maximum parallax amount distance 122 is within the depth of field of the object.

(2A) When the Maximum Disparity Amount Distance 122 is Outside the Depth of Field of the Object The control unit 15 sets the disparity amount of the display image to zero. The HUD device 100 causes the driver 120 to visually recognize a 2D image by displaying a display image without parallax at the virtual image distance 121. In the case of (2A), when the HUD device 100 displays a 3D image, the driver 120 can not simultaneously focus on both the object and the 3D image, which may make it difficult to see the 3D image and may cause sickness or the like. . Therefore, in the case of (2A), the control unit 15 causes the HUD device 100 to display a 2D image, thereby preventing the occurrence of sickness and the like. At that time, the information display control device 10 may supplement the content of the 2D image by voice guidance or the like.

(2B) When the Maximum Disparity Amount Distance 122 is Within the Depth of Field of the Object The control unit 15 sets the disparity amount of the display image to a value larger than zero. The HUD device 100 causes the driver 120 to visually recognize the 3D image at a position farther than the virtual image distance 121 (for example, the maximum parallax amount distance 122) by displaying a display image with a parallax amount larger than zero at the virtual image distance 121.

As described above, the information display control device 10 prevents the occurrence of drunkenness or the like of the driver 120 by minimizing the display time of the 3D image by setting the display of the 3D image only in the case of (2B). In addition, information can be presented in an easy-to-understand manner during travelling.

Next, an operation example of the information display control device 10 will be described.
FIG. 6 is a flowchart showing an operation example of the information display control device 10 according to the first embodiment. The information display control device 10 repeatedly performs the operation shown in the flowchart of FIG. 6 until the vehicle arrives at the destination.

In step ST101, the speed acquisition unit 11 acquires information indicating the speed of the vehicle from the CAN 111 and outputs the information to the control unit 15.

In step ST102, the control unit 15 determines whether the speed of the vehicle is equal to or less than a predetermined speed (for example, 20 km / h). When the speed of the vehicle is equal to or less than the predetermined speed (step ST102 "YES"), the control unit 15 proceeds to step ST103, and when the speed of the vehicle is larger than the predetermined speed (step ST102 "NO") , And proceeds to step ST108.

In step ST103, the distance acquisition unit 12 acquires information indicating the distance from the vehicle to the object from the car navigation system 112 or the external sensor 113, and outputs the information to the depth of field estimation unit 13 and the control unit 15.

In step ST104, the control unit 15 determines whether the distance from the vehicle to the object is equal to or greater than the maximum parallax amount distance 122. If the distance from the vehicle to the object is equal to or greater than the maximum parallax distance 122 (YES in step ST104), the control unit 15 proceeds to step ST105 and the distance from the vehicle to the object is smaller than the maximum parallax distance 122 If it is (step ST104 “NO”), the process proceeds to step ST109.

In step ST105, the depth of field estimation unit 13 estimates the depth of field based on the distance from the vehicle to the object, and outputs the depth of field to the control unit 15.

In step ST106, the control unit 15 determines whether the maximum parallax amount distance 122 is within the range of the depth of field. When the maximum disparity distance 122 is within the depth of field range as shown in FIG. 5B (step ST106 “YES”), the control unit 15 proceeds to step ST107, and the maximum disparity distance 122 is as shown in FIG. 5A. If it is out of the range of the depth of field ("NO" in step ST106), the process proceeds to step ST108.

In step ST107, the control unit 15 controls the amount of parallax to the maximum amount of parallax. The maximum amount of parallax is a value corresponding to the maximum amount of parallax distance 122, and is given to the control unit 15 in advance. The control unit 15 outputs the maximum amount of parallax to the image generation unit 16.

In step ST108, the control unit 15 controls the amount of parallax to be zero and outputs the amount of zero parallax to the image generation unit 16.

In step ST109, the control unit 15 controls the amount of parallax to a value between zero and the maximum amount of parallax according to the distance from the vehicle to the object. That is, as the vehicle approaches the object, the control unit 15 reduces the amount of parallax so that the distance at which the display image generated by the image generation unit 16 is viewed becomes shorter. For example, in the case of the HUD device 100 in which the virtual image distance 121 is 3 m and the maximum parallax distance 122 is 10 m, the control unit 15 sets the parallax amount to 5 m if the distance from the vehicle to the object is 5 m. Make it Further, the control unit 15 sets the parallax amount to zero if the distance from the vehicle to the object is 2 m or the like in which the virtual image distance 121 or less.

In step ST110, the image generation unit 16 generates a display image based on the parallax amount designated by the control unit 15.

In step ST111, the image generation unit 16 outputs the generated display image to the display unit 101 of the HUD device 100. The display unit 101 displays the display image received from the image generation unit 16.

As described above, the information display control device 10 according to the first embodiment includes the speed acquisition unit 11, the distance acquisition unit 12, the depth of field estimation unit 13, the image generation unit 16, and the control unit 15. The speed acquisition unit 11 acquires information indicating the speed of the vehicle. The distance acquisition unit 12 acquires information indicating the distance from a vehicle to an object present in the traveling direction of the vehicle. The depth of field estimation unit 13 estimates the depth of field of the object viewed from the occupant of the vehicle based on the distance from the vehicle to the object. The image generation unit 16 generates a display image displayed in a state of being added to the object by the HUD device 100. The control unit 15 is configured such that the maximum parallax distance 122, which is a distance visually recognized when the display image having the maximum parallax amount is displayed on the HUD device 100, is equal to or less than the speed of the vehicle. When it is within the depth of field, the parallax amount of the display image generated by the image generation unit 16 is controlled to a value larger than zero. Since the 3D image is displayed when the speed of the vehicle is less than or equal to the predetermined speed and the maximum parallax distance 122 is within the depth of field (2B), the display time of the 3D image is minimized. Can be limited. As a result, it is possible to prevent the occurrence of drunkenness or the like of the occupant.

Further, when the speed of the vehicle is equal to or less than a predetermined speed and the distance from the vehicle to the object is smaller than the maximum parallax amount distance 122, the control unit 15 of the first embodiment follows the approach to the object The amount of parallax is reduced so that the distance viewed when the display image is displayed on the HUD device 100 becomes short. This makes it possible to present easy-to-understand information.

In the control unit 15 of the first embodiment, when the speed of the vehicle is greater than a predetermined speed, or the speed of the vehicle is equal to or less than a predetermined speed, the maximum parallax distance 122 If it is outside the depth of field, the parallax amount of the display image generated by the image generation unit 16 is set to zero. If the speed of the vehicle is greater than the predetermined speed (1), the motion parallax causes the driver to feel that the 2D image is farther than the virtual image distance 121. This makes it possible to present easy-to-understand information. When the maximum parallax distance 122 is out of the depth of field (2A), the driver can not simultaneously focus on both the object and the 3D image, and it is likely to cause a sickness or the like, and thus a 2D image is displayed. This can prevent the occurrence of sickness and the like.

Second Embodiment
The configuration of the information display control device 10 according to the second embodiment is the same as the configuration shown in FIG. 1 of the first embodiment in the drawings, so FIG. 1 will be used hereinafter. The control unit 15 of the second embodiment adjusts at least one of the display position or the size of the display image generated by the image generation unit 16 based on the distance from the vehicle to the object.

FIG. 7 is a flowchart showing an operation example of the information display control device 10 according to the second embodiment. The operations of steps ST101 to ST109 and ST111 shown in the flowchart of FIG. 7 are the same as the operations of steps ST101 to ST109 and ST111 shown in the flowchart of FIG.

In step ST201, the control unit 15 determines the position of the display image generated by the image generation unit 16 using the information indicating the distance from the vehicle acquired from the car navigation system 112 or the external sensor 113 to the object. Specifically, the control unit 15 raises the display position of the display image displayed at the virtual image distance 121 as the distance from the vehicle to the object is longer. On the other hand, the control unit 15 lowers the display position of the display image displayed at the virtual image distance 121 as the distance from the vehicle to the object is shorter. The control unit 15 outputs information on the determined display position to the image generation unit 16.

In step ST202, the control unit 15 determines the size of the display image generated by the image generation unit 16 using the information indicating the distance from the vehicle acquired from the car navigation system 112 or the external sensor 113 to the object. Specifically, the control unit 15 reduces the display image displayed at the virtual image distance 121 as the distance from the vehicle to the object is longer. On the other hand, the control part 15 enlarges the display image displayed on the virtual image distance 121, so that the distance from a vehicle to a target object is short. The control unit 15 outputs information on the determined size of the display image to the image generation unit 16.

In step ST203, the image generation unit 16 generates a display image based on the amount of parallax, the display position, and the size designated by the control unit 15.

As described above, the control unit 15 of the second embodiment lowers the display position of the display image generated by the image generation unit 16 as the vehicle approaches the target. Thus, while the vehicle is traveling, the position of the display image visually recognized by the driver can be adjusted to the position of the object, and information can be easily presented.

Further, the control unit 15 of the second embodiment enlarges the display image generated by the image generation unit 16 as the vehicle approaches the object. Thus, while the vehicle is traveling, the position of the display image visually recognized by the driver can be adjusted to the position of the object, and information can be easily presented.

Third Embodiment
FIG. 8 is a block diagram showing a configuration example of the information display device according to the third embodiment. An information display control device 10 according to the third embodiment has a configuration in which a brightness acquisition unit 17 is added to the information display control device 10 of the first embodiment shown in FIG. Further, the information display control device 10 is configured to use a luminance meter 114 mounted on a vehicle. In FIG. 8, parts that are the same as or correspond to those in FIG. 1 are given the same reference numerals, and descriptions thereof will be omitted.

The brightness acquiring unit 17 acquires information indicating the brightness around the vehicle from the luminance meter 114 or the like, and outputs the information to the depth of field estimating unit 13. The luminance meter 114 detects the luminance around the vehicle, and outputs the detected luminance to the brightness acquiring unit 17 as information indicating the brightness around the vehicle. The brightness around the vehicle is not limited to the luminance, and may be illuminance or the like.

The depth of field estimation unit 13 receives, from the brightness acquisition unit 17, information indicating the brightness around the vehicle. The depth of field estimation unit 13 estimates the depth of field of the object viewed from the occupant of the vehicle based on the distance from the vehicle to the object and the brightness around the vehicle, and outputs the depth of field to the control unit 15 . In the example of FIG. 8, the depth of field estimation unit 13 estimates the depth of field with reference to the depth of field table 14 a included in the information display control device 10.

FIG. 9 shows an example of the depth of field table 14a according to the third embodiment. The depth of field table 14a stores the distance from the vehicle to the object in association with the depth of field when the brightness around the vehicle is relatively bright and dark. In this case, the depth of field estimation unit 13 determines “bright” when the brightness around the vehicle is equal to or greater than a predetermined threshold, and determines “dark” when the brightness is less than the threshold. The brighter the surroundings of the vehicle, the narrower the range of depth of field, and the darker the periphery of the vehicle, the wider the range of depth of field. For example, when the distance from the vehicle to the object is 100 m and the surroundings of the vehicle are bright, the depth of field estimation unit 13 refers to the depth of field table 14 a to have a depth of field of 8 to 100 m. Estimate.

The depth of field estimation method of the depth of field estimation unit 13 is not estimated by the above method. For example, the depth of field estimation unit 13 estimates the depth of field using a mathematical expression that defines the relationship between the distance from the vehicle to the object, the brightness around the vehicle, and the depth of field. It is also good.

FIG. 10 is a flowchart showing an operation example of the information display control device 10 according to the third embodiment. The operations of steps ST101 to ST104 and ST106 to ST111 shown in the flowchart of FIG. 10 are the same as the operations of steps ST101 to ST104 and ST106 to ST111 shown in the flowchart of FIG.

In step ST301, the brightness acquisition unit 17 acquires information indicating the brightness around the vehicle from the luminance meter 114, and outputs the information to the depth of field estimation unit 13.

In step ST302, the depth of field estimation unit 13 estimates the depth of field based on the distance from the vehicle to the object and the brightness around the vehicle, and outputs the depth of field to the control unit 15.

As described above, the information display control device 10 according to the third embodiment includes the brightness acquisition unit 17 that acquires information indicating the brightness around the vehicle. The depth of field estimation unit 13 estimates the depth of field of the object viewed from the occupant of the vehicle based on the distance from the vehicle to the object and the brightness around the vehicle. The estimation accuracy is improved by the depth of field estimation unit 13 estimating the depth of field in consideration of the brightness around the vehicle. In addition, the control unit 15 can control the amount of parallax with high accuracy by using the highly accurate depth of field.

Although the information display control device 10 according to the third embodiment has a configuration in which the brightness acquisition unit 17 is added to the information display control device 10 according to the first embodiment, the information display according to the second embodiment The brightness acquisition unit 17 may be added to the control device 10.

Fourth Embodiment
FIG. 11 is a block diagram showing a configuration example of an information display device according to the fourth embodiment. The information display control device 10 according to the fourth embodiment has a configuration in which an eye position acquisition unit 18 and a stereoscopic area adjustment unit 19 are added to the information display control device 10 according to the first embodiment shown in FIG. It is. Further, the information display control device 10 is configured to use an eye position detection device 115 mounted on a vehicle. In FIG. 11, the parts that are the same as or correspond to those in FIG. 1 are given the same reference numerals, and descriptions thereof will be omitted. Further, FIG. 2 is referred to in the fourth embodiment.

The eye position acquisition unit 18 acquires information indicating the positions of both eyes of an occupant such as a driver from the eye position detection device 115 or the like, and outputs the information to the stereoscopic viewing area adjustment unit 19. The eye position detection device 115 is a DMS (Driver Monitoring System) or the like, detects the position of the both eyes of the driver 120 in FIG. 2, and outputs the position to the stereoscopic viewing area adjustment unit 19.

The stereoscopic viewing range adjustment unit 19 determines the adjustment amount of at least one of the vertical direction and the lateral direction of the stereoscopic viewing range of the HUD device 100 based on the positions of both eyes of the occupant. The stereoscopic viewing area adjustment unit 19 outputs information indicating the determined adjustment amount of the stereoscopic viewing area to the drive unit 102 of the HUD device 100. The stereoscopic viewing area is an area where the driver can visually recognize a display image having a parallax amount larger than zero and displayed by the HUD device 100 at the position of the virtual image distance 121 as a 3D image. When both eyes of the driver 120 move out of the stereoscopic vision range, 3D crosstalk or the like occurs, and the driver 120 can not correctly view the 3D image.

The drive unit 102 receives information indicating the adjustment amount of the stereoscopic viewing area from the stereoscopic viewing area adjustment unit 19. The drive unit 102 moves the position of the stereoscopic viewing area in at least one of the up and down direction or the left and right direction by changing the posture of the reflecting mirror 103 according to the designated adjustment amount. In the HUD device 100 configured as shown in FIG. 2, the drive unit 102 adjusts the stereoscopic viewing area by changing the attitude of the reflecting mirror 103, but the adjustment method is not limited to this, and the HUD device The stereoscopic viewing area may be adjusted by a method according to the configuration of 100.

FIG. 12 is a flowchart showing an operation example of the information display control device 10 according to the fourth embodiment. The operations of steps ST101 to ST111 shown in the flowchart of FIG. 12 are the same as the operations of steps ST101 to ST111 shown in the flowchart of FIG.

In step ST401, the eye position acquisition unit 18 acquires information indicating the positions of the driver's eyes from the eye position detection device 115, and outputs the information to the stereoscopic viewing area adjustment unit 19.

In step ST402, the stereoscopic viewing range adjustment unit 19 determines an adjustment amount for adjusting the stereoscopic viewing range of the HUD device 100 based on the position of the driver's eyes.

In step ST403, the stereoscopic viewing range adjustment unit 19 outputs the determined adjustment amount to the drive unit 102 of the HUD device 100. The drive unit 102 adjusts the stereoscopic viewing area in accordance with the adjustment amount received from the stereoscopic viewing area adjustment unit 19.

As described above, the information display control device 10 according to the fourth embodiment includes the eye position acquisition unit 18 and the stereoscopic vision area adjustment unit 19. The eye position acquisition unit 18 acquires information indicating the positions of both eyes of the occupant. The stereoscopic viewing range adjustment unit 19 determines an adjustment amount for adjusting the stereoscopic viewing range of the HUD device 100 based on the positions of the occupant's eyes, and instructs the HUD device 100 on the determined adjustment amount. As a result, the occurrence of 3D crosstalk and the like can be prevented, and information can be presented in an easy-to-understand manner.

The information display control device 10 according to the fourth embodiment has a configuration in which the eye position acquisition unit 18 and the stereoscopic vision area adjustment unit 19 are added to the information display control device 10 according to the first embodiment. The configuration may be such that the eye position acquisition unit 18 and the stereoscopic vision area adjustment unit 19 are added to the information display control device 10 according to the second embodiment or the third embodiment.

Finally, the hardware configuration of the information display device according to each embodiment will be described.
FIG. 13A and FIG. 13B are diagrams showing an example of a hardware configuration of the information display device according to each embodiment. The speed acquisition unit 11, the distance acquisition unit 12, the depth of field estimation unit 13, the depth of field tables 14 and 14a, the control unit 15, the image generation unit 16, the brightness acquisition unit 17, and the eye position in the information display control device 10 Each function of the acquisition unit 18 and the stereoscopic vision area adjustment unit 19 is realized by a processing circuit. That is, the information display control device 10 includes a processing circuit for realizing the above functions. The processing circuit may be the processing circuit 1 as dedicated hardware or may be the processor 2 that executes a program stored in the memory 3. The processing circuit 1 or the processor 2 and the memory 3 are connected to the HUD device 100, the CAN 111, the car navigation system 112, the external sensor 113, the luminance meter 114, and the eye position detection device 115.

As shown in FIG. 13A, when the processing circuit is dedicated hardware, the processing circuit 1 may be, for example, a single circuit, a composite circuit, a programmed processor, a parallel programmed processor, an application specific integrated circuit (ASIC). , FPGA (Field Programmable Gate Array), or a combination thereof. Speed acquisition unit 11, distance acquisition unit 12, depth of field estimation unit 13, depth of field tables 14 and 14a, control unit 15, image generation unit 16, brightness acquisition unit 17, eye position acquisition unit 18, and three-dimensional The function of the viewing zone adjustment unit 19 may be realized by a plurality of processing circuits 1, or the function of each unit may be realized by one processing circuit 1.

As illustrated in FIG. 13B, when the processing circuit is the processor 2, the speed acquisition unit 11, the distance acquisition unit 12, the depth of field estimation unit 13, the control unit 15, the image generation unit 16, the brightness acquisition unit 17, and the eye Each function of the position acquisition unit 18 and the stereoscopic vision area adjustment unit 19 is realized by software, firmware, or a combination of software and firmware. The depth of field tables 14 and 14 a are realized by the memory 3. The software or firmware is written as a program and stored in the memory 3. The processor 2 realizes the functions of the respective units by reading and executing the program stored in the memory 3. That is, the information display control device 10 includes the memory 3 for storing a program which, when executed by the processor 2, results in the steps shown in the flowchart of FIG. The program also includes a velocity acquisition unit 11, a distance acquisition unit 12, a depth of field estimation unit 13, a control unit 15, an image generation unit 16, a brightness acquisition unit 17, an eye position acquisition unit 18, and adjustment of the stereoscopic viewing area. It can also be said that the computer is made to execute the procedure or method of part 19.

Here, the processor 2 refers to a central processing unit (CPU), a processing device, an arithmetic device, a microprocessor, a microcomputer, or the like.
The memory 3 may be a nonvolatile or volatile semiconductor memory such as a random access memory (RAM), a read only memory (ROM), an erasable programmable ROM (EPROM), or a flash memory, a hard disk, a flexible disk, etc. Or an optical disc such as a CD (Compact Disc) or a DVD (Digital Versatile Disc).

The speed acquisition unit 11, distance acquisition unit 12, depth of field estimation unit 13, depth of field tables 14 and 14a, control unit 15, image generation unit 16, brightness acquisition unit 17, eye position acquisition unit 18, and The respective functions of the stereoscopic viewing area adjustment unit 19 may be partially realized by dedicated hardware and partially realized by software or firmware. Thus, the processing circuit in the information display control device 10 can realize each of the functions described above by hardware, software, firmware, or a combination thereof.

In the scope of the present invention, free combinations of the respective embodiments, deformation of any component of each embodiment, or omission of any component of each embodiment are possible within the scope of the invention.

Since the information display control device according to the present invention prevents the occurrence of sickness etc., the information display control device for mobiles including vehicles, railways, ships, aircrafts, etc., particularly the information display control device suitable for on-vehicle use Suitable for use in

Reference Signs List 1 processing circuit, 2 processor, 3 memory, 10 information display control device, 11 speed acquisition unit, 12 distance acquisition unit, 13 depth of field estimation unit, 14, 14a depth of field table, 15 control unit, 16 image generation Unit, 17 Brightness Acquisition Unit, 18 Eye Position Acquisition Unit, 19 Stereo Vision Area Adjustment Unit, 100 HUD Device, 101 Display Unit, 102 Drive Unit, 103 Reflector, 104 Lens, 105 Front Glass, 111 CAN, 112 Car Navigation System, 113 external sensor, 114 luminance meter, 115 eye position detection device, 120 driver, 121 virtual image distance, 122 maximum parallax distance distance, 123, 124 display image.

Claims

An information display control device for controlling a head-up display device that causes a display image to be viewed stereoscopically or planarly, comprising:
A speed acquisition unit that acquires information indicating the speed of the vehicle;
A distance acquisition unit that acquires information indicating a distance from the vehicle to an object present in the traveling direction of the vehicle;
A depth of field estimation unit which estimates the depth of field of the object viewed from the vehicle occupant based on the distance from the vehicle to the object;
An image generator for generating a display image to be displayed in a state of being added to the object by the head-up display device;
The maximum parallax distance which is the distance viewed when the display image having the maximum parallax amount is equal to or less than the predetermined speed and which is the speed of the vehicle is the object field. An information display control device comprising: a control unit configured to control the amount of parallax of the display image generated by the image generation unit to a value larger than zero when within the depth.
When the speed of the vehicle is equal to or less than a predetermined speed and the distance from the vehicle to the object is smaller than the maximum parallax distance, the control unit follows the approach of the object. The information display control device according to claim 1, wherein the amount of parallax is reduced such that a distance viewed when the display image is displayed on the head-up display device is shortened.
When the speed of the vehicle is greater than the predetermined speed, or the speed of the vehicle is equal to or less than a predetermined speed, and the maximum parallax distance is outside the depth of field. The information display control device according to claim 1, wherein the parallax amount of the display image generated by the image generation unit is set to zero in the case of
The information display control device according to claim 1, wherein the control unit lowers the display position of the display image generated by the image generation unit as the vehicle approaches the object.
The information display control device according to claim 1, wherein the control unit enlarges the display image generated by the image generation unit as the vehicle approaches the object.
A brightness acquisition unit that acquires information indicating the brightness around the vehicle;
The depth of field estimation unit estimates the depth of field of the object viewed from the occupant of the vehicle based on the distance from the vehicle to the object and the brightness around the vehicle. The information display control apparatus according to claim 1, characterized in that
An eye position acquisition unit that acquires information indicating the positions of the eyes of the occupant;
Determining an adjustment amount for adjusting the stereoscopic viewing area of the head-up display device based on the positions of the occupant's eyes and a stereoscopic viewing area adjusting unit for instructing the head-up display device of the determined adjustment amount; The information display control device according to claim 1, comprising:
A head-up display device for making a display image look stereoscopically and planarly;
An information display device comprising the information display control device according to claim 1.
An information display control method for controlling a head-up display device which causes a display image to be viewed stereoscopically or planarly, comprising:
The speed acquisition unit acquires information indicating the speed of the vehicle;
A distance acquiring unit acquiring information indicating a distance from the vehicle to an object present in the traveling direction of the vehicle;
The depth of field estimating unit estimating the depth of field of the object viewed from the occupant of the vehicle based on the distance from the vehicle to the object;
The image generation unit generates a display image to be displayed in a state of being added to the object by the head-up display device;
When the control unit determines that the speed of the vehicle is equal to or less than a predetermined speed and the display image having the maximum parallax amount is displayed on the head-up display device, the maximum parallax amount distance is And controlling the amount of parallax of the display image generated by the image generation unit to a value larger than zero when within the depth of field.