Ar-hud optical projection system and mapping relationship calibration method and distortion correction method
A technology of optical projection and mapping relationship, applied in the field of automobiles, can solve problems such as projection image distortion and irregular curvature of windshield, and achieve the effect of eliminating distortion and deformation
Active Publication Date: 2021-11-02
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 present invention provides an AR-HUD optical projection system comprising: a HUD display device and a display controller, and the calibration of the mapping relationship of the display controller adopts: the calibration auxiliary equipment performs spatial positioning on the bearing equipment and the human eye simulation equipment, and the human eye simulation equipment captures the projection For the display content of the virtual screen, the pixels of the display content are converted into the three-dimensional coordinate 1 in the coordinate system of the human eye simulation device, and then the three-dimensional coordinate 1 is converted into the 3D coordinate 2 in the coordinate system of the carrying device, and the horizontal and vertical coordinate values of the 3D coordinate 2 are used as The mapping plane coordinates of the display content in the projection virtual screen are calculated by fitting the mapping plane coordinates and the pixel coordinates of the display content on the actual screen to obtain the two-dimensional physical coordinates of the plane corresponding to the edge points of the actual screen image on the virtual projection screen, The two-dimensional coordinates of the plane on the virtual projection screen are used as the calibration result in the form of an array. The invention also discloses a method for calibrating the mapping relationship of the AR-HUD optical projection system and a method for correcting the distortion of the AR-HUD optical projection system.
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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IPC IPC(8): H04N9/31
CPCH04N9/3141H04N9/3179H04N9/3182
Inventor 张剑朱宣丞
Owner LIANCHUANG AUTOMOBILE ELECTRONICS