AR-HUD optical projection system and mapping relation calibration method and distortion correction method
A technology of optical projection and mapping relationship, applied in the automotive field, can solve the problems of projection image distortion and irregular curvature of the windshield, and achieve the effect of eliminating distortion and deformation
Active Publication Date: 2019-04-26
LIANCHUANG AUTOMOBILE ELECTRONICS
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Problems solved by technology
Due to the certain curvature of the windshield of the vehicle, the projected image of the AR-HUD will be distorted. The curvature is irregular, and it is temporarily impossible to solve the distortion problem through regular methods
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[0043] The present invention provides that the AR-HUD optical projection system provided by the present invention includes: a HUD display device and a display controller, and the display controller uses the following method to calibrate the mapping relationship of the AR-HUD optical projection system;
[0044]Use the calibration auxiliary equipment to carry out spatial positioning of the carrying device and the human eye simulation device. The human eye simulation device captures the dot matrix image projected on the virtual screen, and converts the dot matrix image pixels into three-dimensional coordinates in the coordinate system of the human eye simulation equipment. Perform vertical normalization (vertical normalization: the vertical coordinate, that is, the Z-axis coordinate value is 1), and then convert the three-dimensional coordinate one into the three-dimensional coordinate two in the coordinate system of the carrying device. After vertically normalizing the three-dimen...
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The invention provides an AR-HUD optical projection system. The AR-HUD optical projection system comprises a HUD display device and a display controller. A mapping relation calibration method of the display controller comprises steps that a calibration auxiliary device performs spatial positioning on a bearing device and a human eye simulation device, the human eye simulation device captures display content of a projection virtual screen, display content pixel is converted into 3D coordinates I under a human eye simulation device coordinate system, the 3D coordinates I is converted into a 3D coordinates II under a baring device coordinate system, a transverse coordinate value and a vertical coordinate value of the 3D coordinates II are used as mapping plane coordinates of display content in the projection virtual screen, fitting calculation is performed on pixel coordinates of the mapping plane coordinates and display content on an actual screen, plane 2D physical coordinates corresponding to an actual screen image edge point on the virtual projection screen are acquired, and the plane 2D coordinates on the virtual projection screen are used as a calibration result in an array form. The invention further discloses an AR-HUD optical projection system mapping relation calibration method and an AR-HUD optical projection system distortion correction method.
Description
technical field [0001] The invention relates to the field of automobiles, in particular to an AR-HUD optical projection system. The present invention also relates to an AR-HUD optical projection system and a mapping relationship calibration method, and an AR-HUD optical projection system and a mapping relationship distortion correction method. Background technique [0002] In order to realize a new form of dialogue between people and vehicles, automakers have developed augmented reality head-up display systems (AR-HUD). The augmented reality head-up display accurately combines image information with actual traffic conditions through a specially designed internal optical system, thereby expanding or enhancing the driver's perception of the actual driving environment. Therefore, AR-HUD technology is very likely to become the most innovative development direction of automotive human-machine interface (HMI). [0003] The AR-HUD optical system can reasonably superimpose and dis...
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Login to View More IPC IPC(8): H04N9/31
CPCH04N9/3141H04N9/3179H04N9/3182
Inventor 张剑朱宣丞
Owner LIANCHUANG AUTOMOBILE ELECTRONICS