CN114779470A - Display method of augmented reality head-up display system - Google Patents
Display method of augmented reality head-up display system Download PDFInfo
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- CN114779470A CN114779470A CN202210259144.3A CN202210259144A CN114779470A CN 114779470 A CN114779470 A CN 114779470A CN 202210259144 A CN202210259144 A CN 202210259144A CN 114779470 A CN114779470 A CN 114779470A
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 230000003190 augmentative effect Effects 0.000 title claims abstract description 19
- 210000003128 head Anatomy 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000013480 data collection Methods 0.000 claims 1
- 239000000446 fuel Substances 0.000 claims 1
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0101—Head-up displays characterised by optical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/0093—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00 with means for monitoring data relating to the user, e.g. head-tracking, eye-tracking
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0149—Head-up displays characterised by mechanical features
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/01—Head-up displays
- G02B27/0149—Head-up displays characterised by mechanical features
- G02B2027/0154—Head-up displays characterised by mechanical features with movable elements
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Abstract
The invention discloses a display method of an augmented reality head-up display system, which belongs to the technical field of head-up display systems and comprises a microcontroller, a display module, a reflector, an internal camera, an external camera and a height adjusting mechanism, wherein the microcontroller is used for controlling the height of the display module; the display method comprises the following steps: s1, igniting the vehicle, and initializing the system; s2, the microcontroller acquires road information in front of the vehicle through an external camera and displays corresponding auxiliary information through the display module; s3, the microcontroller collects OBD data of the vehicle, analyzes the OBD data into corresponding vehicle information, and displays the vehicle information through the display module; s4, the microcontroller acquires the eye height of the driver through an internal camera; s5, the microcontroller adjusts the projection height of the reflector through the height adjusting mechanism according to the eye height of the driver, so that the situation that the background with the excessively high enhanced surface is sky or the background with the excessively low state surface is the bonnet when the driver watches the vehicle due to different heights is avoided, the projection surface is obvious and easy to watch, and the driving experience is improved.
Description
Technical Field
The invention belongs to the technical field of head-up display systems, and particularly relates to a display method of an augmented reality head-up display system.
Background
A HUD (Head Up Display) originally comes to the fighter, which can reduce the frequency of the pilot looking down at the instrument panel and avoid the pilot from inattentive driving. Subsequently, since the HUD device brings some convenience while the cost is further reduced, the automobile also starts to follow up slowly. Through the HUD device, the user can observe information such as vehicle speed, speed limit indication, driving route map, and the like. In contrast to the HUD, AR-HUD not only can display driving information, but also changes the way the driver views the information.
The AR-HUD (augmented reality head-up display) can reasonably display some driving information in a superimposed manner in a sight area of a driver and is combined with actual traffic road conditions. By AR-HUD technology, the driver can extend and enhance his own perception of the driving environment. In an AR-HUD, two projection planes based on different projection distances may be generated, referred to as the "proximal" (or "state") plane and the "distal" (or "enhancement") plane, respectively. The projection of state plane of projection shows at driver's the place ahead distance of about 3 meters, and the projection of reinforcing plane of projection shows at driver's the place ahead distance of about 10 meters, and prior art center throws the height and is fixed, and when driver's height was too high or low, can lead to the plane of projection near too much or too far away when seeing the plane of projection, lead to the impression relatively poor, and the background of plane of projection can influence the observation effect, and the mistake is seen easily, and driving experience is poor.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the display method of the augmented reality head-up display system is provided, the projection height of the projection plane can be adjusted according to the positions of the eyes of a driver, and the projection plane is obvious and easy to watch, so that the driving experience is improved.
In order to solve the technical problem, the technical scheme of the invention is as follows:
a display method of an augmented reality head-up display system comprises a microcontroller, a display module, a reflector, an internal camera, an external camera and a height adjusting mechanism; the display method comprises the following steps: s1, igniting the vehicle, and initializing the system; s2, the microcontroller acquires the road information in front of the vehicle through the external camera and displays the corresponding auxiliary information through the display module; s3, the microcontroller collects OBD data of the vehicle, analyzes the OBD data into corresponding vehicle information, and displays the vehicle information through the display module; s4, the microcontroller acquires the eye height of the driver through the internal camera; and S5, adjusting the projection height of the reflector by the microcontroller through the height adjusting mechanism according to the height of the eyes of the driver.
Further, the S5 specifically includes the following steps: s5a, judging whether the eye height of the driver is matched with the current height of the projection surface, if so, the height adjusting mechanism does not act; s5b, if not, judging whether the eyes of the driver are higher than the position matched with the current height of the projection surface; s5c, when the height of the eyes of the driver is higher than the position matched with the current height of a projection surface, the projection surface is upwards adjusted; and S5d, when the height of the eyes of the driver is lower than the position matched with the current height of the projection surface, adjusting the projection surface downwards.
Further, in S3, the internal camera captures an image of the head of the driver, and the microcontroller performs eye positioning by analyzing the image.
Further, the microcontroller determines the height of the eye from the pixel distribution of the image.
Further, the microcontroller decodes the image into an information stream of the three primary color light mode, and then analyzes the height of the eyes on the image.
Further, in S3, the internal camera is an infrared camera, and the microcontroller collects the head position of the driver through the infrared camera, and then calculates the height of the eyes according to a height scale model of the eyes on the head.
Furthermore, the auxiliary information includes navigation, road condition prompt and lane line.
Furthermore, in S2 the OBD data acquisition process is to read vehicle computer data through on-vehicle OBD interface.
Further, the vehicle information comprises the real-time vehicle speed, the engine rotating speed, the water temperature, the oil consumption and the driving mileage of the vehicle.
After the technical scheme is adopted, the invention has the beneficial effects that:
according to the display method of the augmented reality head-up display system, the head-up display system comprises a microcontroller, a display module, a reflector, an internal camera, an external camera and a height adjusting mechanism; the display method comprises the following steps: s1, igniting the vehicle, and initializing the system; s2, the microcontroller acquires the road information in front of the vehicle through the external camera and displays the corresponding auxiliary information through the display module; s3, the microcontroller collects OBD data of the vehicle, analyzes the OBD data into corresponding vehicle information, and displays the vehicle information through the display module; s4, the microcontroller acquires the eye height of the driver through an internal camera; s5, the microcontroller adjusts the projection height of the reflector through the height adjusting mechanism according to the eye height of the driver, and adjusts the height of the projection surface according to the eye height of the driver, so that the situation that the enhanced surface is too high when the driver watches due to different heights, if the background is sky, or the state surface is too low, if the background is a front cover, the projection surface is obvious and easy to watch is avoided, and the driving experience is improved.
Drawings
Fig. 1 is a schematic flow chart of a display method of an augmented reality head-up display system according to the present invention.
Detailed Description
The invention is further illustrated by the following examples in conjunction with the drawings.
All directions referred to in the present specification are based on the drawings, and represent relative positional relationships only, and do not represent absolute positional relationships.
As shown in fig. 1, a display method of an augmented reality head-up display system includes a microcontroller, a projector, an internal camera, an external camera, and a height adjustment mechanism, where the height adjustment mechanism may be a combination structure of a micro motor and a gear reducer. The display method comprises the following steps:
and S1, igniting the vehicle and initializing the system.
When the vehicle is ignited, namely the vehicle is started through a key or a button, the head-up display system is automatically started without manual operation of a driver.
S2, the microcontroller acquires the road information ahead of the vehicle through the external camera, and displays corresponding auxiliary information through the display module, wherein the auxiliary information comprises navigation, road condition prompt, lane lines and the like, and can assist the driving of the driver, and the auxiliary information can be displayed on an enhanced projection surface and is projected and displayed at a distance of about 10 meters ahead of the driver.
And S3, the microcontroller collects OBD data of the vehicle, analyzes the OBD data into corresponding vehicle information, and displays the vehicle information through the display module.
In the embodiment, the OBD data acquisition process is to read the data of the vehicle computer through the vehicle-mounted OBD interface, and the vehicle information comprises the real-time speed of the vehicle, the rotating speed of an engine, the water temperature, the oil consumption and the mileage. The vehicle information can be displayed on a state projection surface, is positioned at the lower end of a front windshield, is projected and displayed in the front of a driver by about 3 meters, does not need to be lowered, and is convenient to watch various information of the vehicle.
And S4, the microcontroller acquires the eye height of the driver through the internal camera.
As shown in fig. 1, one embodiment of the method for obtaining the eye height of the driver in S4 is: the inside camera shoots the head image of the driver, and the microcontroller carries out eye positioning through image analysis. The method is specifically divided into two types, wherein one embodiment is that the microcontroller determines the height of the eye according to the pixel distribution of the image, the other embodiment is that the microcontroller decodes the image into an information stream of a three primary color light mode, and then analyzes the height of the eye on the image through a proper computer algorithm, and the embodiment preferably uses open source OpenCV to detect the height of the eye on the picture. The full name of OpenCV is: open Source Computer Vision Library. OpenCV is a (open source) based cross-platform computer vision library that can run on Linux, Windows, and Mac OS operating systems. OpenCV is composed of a series of C functions and a small number of C + + classes, provides interfaces of languages such as Python, Ruby, MATLAB and the like, and realizes a plurality of general algorithms in the aspects of image processing and computer vision.
As shown in fig. 1, another embodiment of the method for obtaining the eye height of the driver in S4 is as follows: the inside camera is infrared camera, and microcontroller gathers driver's head position through infrared camera, then calculates eye height according to the high proportion model of people's eye at the head, and the proportion model accessible different heights driver measures and reachs.
S5, the microcontroller adjusts the projection height of the reflector through the height adjusting mechanism according to the eye height of the driver, so that the enhanced surface and the state surface are projected and displayed at a proper position in front of the driver, namely the state projection surface is projected and displayed at a distance of about 3 meters in front of the driver, the enhanced projection surface is projected and displayed at a distance of about 10 meters in front of the driver, and the projection surface is obvious and easy to watch, thereby improving the driving experience. The matching model of the height of the eyes of the driver and the height of the projection surface can be obtained through a plurality of tests.
As shown in fig. 1, S5 specifically includes the following steps:
s5a, judging whether the eye height of the driver is matched with the current height of the projection surface, if so, stopping the height adjusting mechanism;
s5b, if not, judging whether the eye height of the driver is higher than the position matched with the current height of the projection surface;
s5c, when the height of the eyes of the driver is higher than the position matched with the current height of the projection surface, the projection surface is adjusted upwards;
and S5d, when the height of the eyes of the driver is lower than the position matched with the current height of the projection surface, the projection surface is adjusted downwards.
The display method of the augmented reality head-up display system can adjust the projection height of the projection surface according to the height of the eyes of the driver, so that the augmented surface and the state surface are projected and displayed at proper positions in front of the driver, the projection surface is obvious and easy to watch, the eyes are not tired, and the driving experience can be improved.
While specific embodiments of the invention have been described, it will be understood by those skilled in the art that the described embodiments are merely illustrative of some, and not restrictive, of the invention, which is defined by the following claims. Various changes or modifications to these embodiments may be made by those skilled in the art without departing from the principle and spirit of the invention, and these changes and modifications all fall within the scope of the invention.
Claims (9)
1. A display method of an augmented reality head-up display system is characterized in that the head-up display system comprises a microcontroller, a display module, a reflector, an internal camera, an external camera and a height adjusting mechanism;
the display method comprises the following steps:
s1, igniting the vehicle, and initializing the system;
s2, the microcontroller acquires road information in front of the vehicle through the external camera and displays corresponding auxiliary information through the display module;
s3, the microcontroller collects OBD data of the vehicle, analyzes the OBD data into corresponding vehicle information, and displays the vehicle information through the display module;
s4, the microcontroller acquires the eye height of the driver through the internal camera;
and S5, adjusting the projection height of the reflector by the height adjusting mechanism according to the eye height of the driver through the microcontroller.
2. The display method of the augmented reality head-up display system according to claim 1, wherein the S5 specifically includes the following steps:
s5a, judging whether the eye height of the driver is matched with the current height of the projection surface, if so, the height adjusting mechanism does not act;
s5b, if not, judging whether the eyes of the driver are higher than the position matched with the current height of the projection surface;
s5c, when the height of the eyes of the driver is higher than the position matched with the current height of a projection surface, upward adjustment of the projection surface is carried out;
and S5d, when the height of the eyes of the driver is lower than the position matched with the current height of the projection surface, adjusting the projection surface downwards.
3. The display method of the augmented reality heads-up display system of claim 1, wherein the internal camera captures an image of the driver' S head in the S3, and the microcontroller performs eye positioning by analyzing the image.
4. The display method of the augmented reality heads-up display system of claim 3 wherein the microcontroller determines the height of the eye from the pixel distribution of the image.
5. The method of claim 3, wherein the microcontroller decodes the image into an information stream of three primary color light modes and then analyzes the eye height on the image.
6. The display method of the augmented reality head-up display system of claim 1, wherein the internal camera in S3 is an infrared camera, and the microcontroller collects the head position of the driver through the infrared camera and then calculates the eye height according to a model of the eye height ratio on the head.
7. The method of claim 1, wherein the auxiliary information comprises navigation, road condition prompts, lane markings.
8. The display method of the augmented reality head-up display system according to any one of claims 1 to 7, wherein the OBD data collection process in S2 is to read vehicle computer data through a vehicle-mounted OBD interface.
9. The display method of the augmented reality heads-up display system of claim 8 wherein the vehicle information includes vehicle real-time speed, engine speed, water temperature, fuel consumption, mileage.
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Cited By (1)
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