Windshield AR Display Corrector for Curved Glass Distortion
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Solution Overview
Problem
Conventional display devices for vehicles suffer from image distortion when reflecting a display image onto a curved windshield glass, causing double images and disrupting the three-dimensional naked-eye display experience due to differing positions of the user's left and right eyes.
Innovation Solution
A display device comprising a display and a corrector that uses specific correction patterns for each eye to counteract the distortion caused by the windshield's curved shape, with a camera and detector dynamically adjusting these patterns based on the eye positions to ensure accurate alignment and minimize distortion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a display image is reflected onto a curved windshield glass for three-dimensional naked-eye display, then the three-dimensional display effect is achieved, but image distortion occurs due to the curved shape of the windshield glass
Solution Approach 1:
The patent applies preliminary action by pre-calculating and pre-distorting the display image in the opposite direction of the windshield glass curvature distortion. The image processing unit distorts the original image before it is displayed, so that when the distorted image reflects off the curved windshield, the two distortions cancel each other out, resulting in a undistorted three-dimensional image for the user.
Solution Approach 2:
The patent changes the parameters of the display image (specifically the geometric distortion parameters) to compensate for the windshield glass curvature. By adjusting the image distortion parameters in advance based on the known windshield curvature characteristics, the system transforms the image parameters so that the final reflected image appears undistorted to the user.
2Device complexity
If a single correction pattern is used for both left and right eyes, then the device complexity is reduced, but the distortion correction precision deteriorates due to different eye positions
Solution Approach 1:
The patent applies segmentation by dividing the correction pattern into separate patterns for the left eye and right eye. Instead of using a single unified correction pattern, the system generates and applies distinct correction patterns tailored to each eye's specific position and viewing angle, thereby achieving more precise distortion correction for each eye while maintaining manageable system complexity through automated generation.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively reduces image distortion and prevents double images by dynamically adjusting correction patterns according to the user's eye positions, ensuring a clear and unified three-dimensional display experience.
Implementation Method 1
a display (110) for reflecting a display image for a naked eye three-dimensional display to a windshield glass (201)
Data Source
AI summary
This display device is provided with a display unit and a connection unit. The display unit reflects a naked-eye-stereoscopic display image onto a glass windshield. The correction unit corrects, in accordance with correction patterns corresponding to the curved shape of the glass windshield, the image to be displayed includes a left-eye image and a right-eye image. The image to be displayed includes a left-eye image and a right-eye image. The correction patterns include: a first pattern for correcting the left-eye image: and a second pattern for correcting the right-eye image.