JP2019043499A - Head-up display system - Google Patents

Abstract

To provide a head-up display system capable of easing discomfort of a driver.SOLUTION: A head-up display system includes: an object generation part 14 for generating an object for supporting driving; and a display control part 15 for displaying the generated object on a windshield by superposing the generated object on a real space seen through the windshield. The object generation part 14 adjusts the luminance of the object so as to conform to the brightness of a corresponding place on the basis of information about the brightness of the place for supporting driving.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a head-up display system.

  Patent Document 1 below discloses an HUD (head-up display) that displays a display object such as a vehicle speed, a warning, and route guidance on a windshield, superimposed on the front view seen through the windshield of the host vehicle. In this patent document 1, the change of the lightness of the front view in the movement planned route of the own vehicle is estimated, and the lightness of the display object is determined based on the estimation result. Further, when determining the lightness of the display object, the lightness of the scenery at each time modeled in advance is referred to, and the lightness of the display object is adjusted according to the time to be displayed.

JP, 2015-230388, A

  The forward view seen through the windshield of the vehicle may vary in brightness from place to place, such as, for example, becoming a shade of a high-rise building. In Patent Document 1, since the lightness is adjusted according to the time, for example, when an object is displayed with the brightness to be displayed during the day, when the front view is dimmed due to the shade during the day, the object It gets too bright. If the distance to the target location can also be effective information, such as an arrow that guides turning to the left or right at an intersection, for example, if the display of the object becomes too bright, the corner is closer than it actually is. It will be felt that there is a factor that gives the driver a sense of discomfort.

  Then, an object of this invention is to provide the head-up display system which can relieve a driver | operator's discomfort.

  In a head-up display system according to an aspect of the present invention, an object generation unit that generates an object for supporting driving, and the generated object are superimposed on a real space seen over a windshield to be displayed on a windshield. And a display control unit for displaying the object, wherein the object generation unit adjusts the brightness of the object so as to match the brightness of the place based on the information on the brightness of the place supporting the driving.

  In the above aspect, the information processing apparatus may further include a brightness information acquisition unit that acquires information related to the brightness based on a photographed image obtained by photographing the road surface ahead of the travel path of the host vehicle.

  In the above aspect, the brightness information acquisition unit divides the photographed image into a plurality of blocks, analyzes the photographed image for each of the divided blocks, and acquires information on the brightness, and generates the object. The unit may adjust the brightness of the object based on the brightness of a block corresponding to the place supporting the driving.

  In the above aspect, the object generation unit may adjust luminance for each of the objects when there are a plurality of the objects.

  In the above aspect, when adjusting the luminance of the object, the object generation unit increases the luminance of the object as the brightness is brighter based on the information on the brightness, and the luminance of the object as the brightness is darker. You may lower your

  According to the present invention, it is possible to provide a head-up display system capable of alleviating the driver's discomfort.

It is a figure which illustrates the functional composition of the head up display system in an embodiment. It is a flowchart for demonstrating the operation | movement of the head-up display system in embodiment.

  Preferred embodiments of the present invention will be described with reference to the accompanying drawings. In addition, what attached the same code | symbol in each figure has the same or same structure. The head-up display system according to the embodiment is, for example, a system which is mounted on a vehicle and supports driving of a driver who is a user.

  The functional configuration of the head-up display system according to the embodiment will be described with reference to FIG. The head-up display system 1 includes, for example, a traveling route acquisition unit 11, a geographical information acquisition unit 12, a brightness information acquisition unit 13, an object generation unit 14, and a display control unit 15. In addition, the function of the head-up display system 1 is not limited to this, Arbitrary functions can be added suitably as needed.

  The head-up display system 1 includes, for example, a control unit including a central processing unit (CPU) and a memory, an operation unit, a display, a speaker, a communication device, and the like as a physical configuration. The head-up display system 1 may be configured as one device or may be configured to be distributed to a plurality of devices. Each function of the traveling route acquisition unit 11, the geographical information acquisition unit 12, the brightness information acquisition unit 13, the object generation unit 14, and the display control unit 15 is realized by the CPU executing a predetermined program stored in the memory. . Each function is described below.

  The travel route acquisition unit 11 acquires a travel route from the current position to the destination based on the destination specified by the driver. The current position can be acquired, for example, using a GPS (Global Positioning System) receiver or the like mounted on a vehicle.

  The travel route can be acquired as follows. For example, a navigation function is mounted on the head-up display system 1, and a travel route is acquired by performing a route search using the navigation function. Alternatively, the destination may be transmitted to an external server, and the travel route may be acquired by receiving the travel route searched from the external server.

  The geographic information acquisition unit 12 acquires geographic information such as map data and intersection data required for route guidance from the geographic information DB (database) 2 based on the acquired travel route. The geographic information DB 2 stores, for example, map data, intersection data, link data, node data and the like as geographic information. The intersection data is data on an intersection such as the position and shape of the intersection. Link data is data on a straight part (link) of a road. The node data is data on a portion (node) in which road conditions change, such as road slopes and curves.

  The geographic information may be stored in the head-up display system 1 or may be managed outside the head-up display system 1. In addition, geographical information may be distributed and managed in plurality inside and outside the head-up display system 1. In addition, information obtained by various sensors such as a camera mounted on a vehicle and a light detection and ranging (LiDAR) may be included in the geographical information and used.

  The brightness information acquisition unit 13 acquires brightness information on the brightness of a place that supports driving by analyzing a captured image obtained by capturing a road surface ahead of the traveling path of the host vehicle. The photographed image is photographed, for example, by an outward camera mounted on a vehicle. The analysis of the captured image is performed using, for example, a binarization process. The places supporting driving include, for example, intersections which guide turning to the left and right, places where bicycles, pedestrians or obstacles exist.

  Specifically, the brightness information acquisition unit 13 divides the photographed image into a plurality of blocks, and analyzes the photographed image for each of the divided blocks to acquire the brightness information of the place supporting the driving.

  In addition, it is good also as including surrounding brightness detected using the illumination sensor for auto lights mounted in a vehicle in brightness information.

  The object generation unit 14 generates an object for supporting driving. The object for supporting driving includes, for example, an arrow for guiding turning to the right or left at an intersection, a mark for alerting that a bicycle, a pedestrian or an obstacle is present in a traveling route, and the like. Be

  The object generation unit 14 adjusts the brightness of the object so as to match the brightness of the driving support location based on the acquired brightness information. For example, RGB values can be used as the luminance of the object.

  Specifically, the object generation unit 14 adjusts the luminance of the object based on the brightness information of the block corresponding to the place supporting driving.

  When adjusting the brightness of an object, the object generation unit 14 raises the brightness of the object as the brightness is higher and decreases the brightness of the object as the brightness is lower based on the brightness information. The object generation unit 14 adjusts the luminance for each object when there are a plurality of objects.

  The display control unit 15 superimposes the generated object on the real space viewed through the windshield and causes the windshield to be displayed.

  Specifically, the display control unit 15 has a function of a HUD (head-up display), and displays the object on the windshield while changing the focal length in accordance with the distance to the overlapping place. The display control unit 15 may, for example, project an object on a windshield using a projector, or may display the object on a transparent screen provided on the windshield.

  Next, an example of the operation of the head-up display system 1 according to the embodiment will be described with reference to FIG. Here, by way of example, when guiding a left / right turn at an intersection, an aspect will be described in which the brightness of the arrow shape is adjusted according to the brightness information of the intersection.

  First, the brightness information acquisition unit 13 determines whether it is time to guide turning to the left or right at an intersection (step S101). When this determination is NO (step S101; NO), the determination of step S101 is repeated until it becomes YES.

  If it is determined in step S101 that it is the timing to guide turning to the right or left (step S101; YES), the brightness information acquisition unit 13 takes a photographed image of the road ahead of the host vehicle. By analyzing, the brightness information of the intersection which guides turn to the left and right is acquired (step S102).

  Subsequently, the object generation unit 14 adjusts the brightness of the arrow graphic so as to be adapted to the brightness of the intersection guiding the right / left turn based on the brightness information acquired in step S102 (step S103).

  Subsequently, the display control unit 15 superimposes the arrow figure whose brightness has been adjusted in step S103 on the real space viewed through the windshield and causes the windshield to be displayed (step S104). Then, the operation ends.

  As described above, according to the head-up display system 1 in the embodiment, an arrow figure for guiding a left / right turn at an intersection is generated, and the generated arrow figure is superimposed on the real space seen over the windshield. The display can be displayed on the windshield, and the brightness of the displayed arrow can be adjusted to match the brightness of the intersection guiding the turning.

  Therefore, according to the head-up display system 1 in the embodiment, the driver's discomfort can be alleviated.

  The present invention is not limited to the above-described embodiment, and can be implemented in other various forms without departing from the scope of the present invention. For this reason, the said embodiment is only a mere illustration in all the points, and is not interpreted restrictively. For example, the processing steps described above can be arbitrarily changed in order or performed in parallel as long as no contradiction occurs in the processing contents.

  DESCRIPTION OF SYMBOLS 1 ... Head-up display system, 11 ... Traveling route acquisition part, 12 ... Geography information acquisition part, 13 ... Brightness information acquisition part, 14 ... Object generation part, 15 ... Display control part, 2 ... Geography information DB

Claims (5)

An object generation unit that generates an object for supporting driving;
A display control unit which causes the windshield to be displayed by superimposing the generated object on a real space viewed through the windshield;
Equipped with
The object generation unit adjusts the brightness of the object so as to match the brightness of the place based on the information on the brightness of the place supporting driving.
Head-up display system. The information processing apparatus further comprising: a brightness information acquisition unit that acquires information related to the brightness based on a captured image obtained by capturing a road surface ahead of the travel path of the vehicle.
The head-up display system according to claim 1. The brightness information acquisition unit divides the photographed image into a plurality of blocks, and analyzes the photographed image for each of the divided blocks to acquire information on the brightness.
The object generation unit adjusts the brightness of the object based on the brightness of a block corresponding to a place supporting the driving.
The head-up display system according to claim 2. The object generation unit adjusts the luminance for each of the objects when there are a plurality of the objects.
The head-up display system according to claim 3. When adjusting the brightness of the object, the object generation unit increases the brightness of the object as the brightness is brighter and decreases the brightness of the object as the brightness is darker, based on the information on the brightness.
The head up display system according to any one of claims 1 to 4.