CN-121999177-A - Square cabin panoramic display method adapting to virtual driving scene

CN121999177ACN 121999177 ACN121999177 ACN 121999177ACN-121999177-A

Abstract

The invention discloses a square cabin panoramic display method for adapting to a virtual driving scene, which comprises a square cabin body, wherein the square cabin body is of a tetrahedron structure, four inner side surfaces of the square cabin body are used as projection bearing surfaces, and the method comprises the steps of S1, initializing a virtual driving simulation module, S2, a scene separator, a segmentation mapping model, an image correction module and an image correction module, wherein the scene separator is used for establishing a segmentation mapping model based on loaded parameters and dividing the virtual driving scene into four paths of front, back, left and right, adapting initial projection images of the corresponding projection bearing surfaces, the image correction module is used for respectively carrying out geometric correction on the four paths of initial projection images, distortion caused by projection angles is eliminated, and four paths of corrected projection images are obtained, S4, if visual engagement requirements exist on the projection images of adjacent projection bearing surfaces, an edge fusion unit of the image correction module is used for setting an overlapping area on the edges of the adjacent images, and carrying out brightness equalization processing, and S5, the scene separator is used for transmitting processed four paths of projection image signals to a projector, and projecting the received corrected four paths of projection images onto the corresponding square cabin projection surfaces, so as to form a seamless immersion type virtual driving visual environment. According to the invention, the hardware purchasing and installing cost is reduced, the picture distortion is avoided, the lateral image is closer to the real scene, and the driving experience of the immersive visual environment is improved.

Inventors

SHI JING
CHENG JUN
ZHAO XIAOLIN
GUO WENQIANG

Assignees

北京彦圣科技有限公司

Dates

Publication Date: 20260508
Application Date: 20260128

Claims (6)

1. The square cabin panoramic display method for adapting to the virtual driving scene is characterized by being applied to a square cabin panoramic display system for adapting to the virtual driving scene, wherein the system comprises a square cabin body, is of a tetrahedron structure, takes four inner side surfaces as projection bearing surfaces, is flat and has diffuse reflection projection adaptation characteristics; The method comprises the following steps: s1, initializing a virtual driving simulation module, constructing a virtual driving scene containing preset driving scene elements, loading space parameters of four projection bearing surfaces of a square cabin, and transmitting a driver visual field range and projector projection parameters to a scene separator through a data interface; S2, a scene separator establishes a segmentation mapping model based on loaded parameters through a square cabin projection adaptation unit, segments a virtual driving scene into four paths of front, back, left and right, and adapts an initial projection picture of a corresponding projection bearing surface; s3, respectively performing geometric correction on four paths of initial projection pictures by a picture correction module, generating a correction matrix through characteristic point matching, eliminating distortion caused by projection angles, and obtaining four paths of corrected projection pictures; S4, if the projection pictures of the adjacent projection bearing surfaces have visual engagement requirements, an edge fusion unit of the picture correction module sets an overlapping area for the edges of the adjacent pictures and performs brightness equalization treatment; And S5, transmitting the processed four paths of projection picture signals to projectors which are arranged at preset projection positions of four projection surfaces in the square cabin by the scene separator and used for projecting the received corrected four paths of projection pictures to the corresponding square cabin projection surfaces to form a seamless immersion type virtual driving visual environment.
2. The method for displaying the panorama of the square cabin adapted to the virtual driving scene according to claim 1, wherein the panorama display adapting unit of the scene separator pre-stores the spatial parameters of the four projection bearing surfaces of the square cabin, including the projection bearing surface size, the projection bearing surface distance and the projection bearing surface perpendicularity parameter, and establishes a projection picture segmentation mapping model based on the spatial parameters, the driver visual field range and the projector projection parameters, so as to ensure that the segmented four paths of pictures are respectively and completely adapted to the projection bearing surface size.
3. The square cabin panorama display method according to claim 1, wherein the image correction module employs a grid mapping correction algorithm to generate a geometric correction matrix by extracting a corresponding relationship between the feature points of the projected image and a preset reference point of the projection bearing surface of the square cabin, and performs pixel-by-pixel correction on each path of the divided projected image, so that the edge of the projected image is precisely attached to the edge of the projection bearing surface without stretching or compression distortion.
4. The method for displaying the panorama of the square cabin adapted to the virtual driving scene according to claim 1, wherein a low-delay data transmission protocol is adopted between the virtual driving simulation module and the scene separator, the transmission delay is not more than 20ms, and the dynamic change of the virtual driving scene and the synchronous update of the projection picture are ensured.
5. The method for displaying the panorama of the square cabin adapted to the virtual driving scene according to claim 1, wherein the virtual driving simulation module comprises an automobile posture control module, and outputs a precise control command according to the real-time state of the vehicle in the scene.
6. The method for displaying a square cabin panorama adapting a virtual driving scene according to claim 1, wherein the virtual driving simulation module comprises a data integration module for performing time stamp alignment on multi-source data in the scene and performing a human engineering analysis.

Description

Square cabin panoramic display method adapting to virtual driving scene Technical Field The invention relates to the technical field of virtual driving, in particular to a square cabin panoramic display method adapting to a virtual driving scene, which is suitable for immersive virtual driving application scenes such as a driving simulator, a virtual driving training cabin and the like, and realizes clear and undistorted projection of the virtual scene on a square cabin projection bearing surface. Background In the technical field of virtual driving, a driving behavior simulator is core equipment for driving behavior research and human engineering analysis, and immersive visual environment construction is a core link for improving driving experience authenticity. The prior related art mainly has two types of implementation schemes, and has obvious limitations: 1. The basic visual field simulator adopts a single screen, triple screen or 180-degree screen structure, and can only meet the simple requirements of game entertainment, basic driving operation demonstration and the like. Due to insufficient visual field coverage (a 180-degree screen cannot present a complete traffic environment at the rear side), the requirements of complex driving behavior experiments such as lane changing decision, roundabout driving, emergency avoidance and the like cannot be met completely, adaptation is not performed on professional driving simulation software, and the flexibility of experimental scenes and the data compatibility are extremely poor. 2.360 The full-view coverage of the existing 360-degree circular screen scheme can be realized by adopting a circular structural design, but has the remarkable defects that firstly, the occupied space is large, the requirements on a laboratory site are severe, secondly, the hardware cost is high, more projectors and complex splicing equipment are required to be configured, thirdly, the image splicing difficulty is high, edge distortion is easy to occur in curved surface projection, the picture consistency at the splicing position is difficult to ensure, the deployment position of the projector and a projection bearing surface have fixed projection angles, the traditional scheme only depends on the basic correction function of the projector, geometrical distortion caused by complex angles is difficult to eliminate, the picture edge stretching and distortion are difficult to cause, the visual immersion is influenced, and more importantly, the circular screen simulator and the special driving simulation software lack of depth adaptation, only can realize basic scene projection, cannot call the core functions of high-precision scene editing, multi-dimensional data synchronous acquisition, human engineering special analysis tools and the like of the software, so that the experimental scene and the research requirements are disjointed, and the acquired data are difficult to support the academic study. 3. In the actual driving behavior and engineering research, the natural visual angle of a driver can reach 360 degrees, and experiments need to be carried out by relying on the capabilities of SCANeR software, such as high-precision scene modeling, complex working condition simulation, multi-source data integration and the like. The existing equipment cannot meet the full-view scene restoration requirement, and lacks depth cooperation with professional simulation software, so that the reality, the integrity and the practicability of experimental data are insufficient, and accurate driving behavior analysis and human engineering research are difficult to support. Disclosure of Invention The invention aims to overcome the defects of the prior art, and provides a square cabin panoramic display method adapting to a virtual driving scene, which realizes the accurate matching of full-view scene restoration, high-precision data acquisition and professional research requirements. In order to achieve the above object, the first aspect of the present invention adopts the following technical scheme: the method is applied to a square cabin panoramic display system for adapting a virtual driving scene, and the system comprises a square cabin body which is of a tetrahedron structure, four inner side surfaces of the square cabin body are taken as projection bearing surfaces, and the projection bearing surfaces are flat and have diffuse reflection projection adaptation characteristics; The method comprises the following steps: s1, initializing a virtual driving simulation module, constructing a virtual driving scene containing preset driving scene elements, loading space parameters of four projection bearing surfaces of a square cabin, and transmitting a driver visual field range and projector projection parameters to a scene separator through a data interface; S2, a scene separator establishes a segmentation mapping model based on loaded parameters through a square cabin projection adaptation unit, segment