Windshield Display Distortion Correction for Multiple Viewer Positions
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Solution Overview
Problem
In head-up display systems, images projected onto vehicle windshields with freeform surfaces appear distorted to viewers due to the curvature of the windshield, varying significantly based on display position and viewer position, leading to inconsistent image quality for drivers and passengers.
Innovation Solution
A display control apparatus that includes a distortion correction selecting section and a processor to dynamically determine transformation information based on viewer and display positions, correcting images to minimize distortion for optimal viewing, considering attributes of content and viewpoint information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If an image is corrected for a driver viewer position, then the image distortion is reduced for the driver, but the image becomes greatly distorted for a passenger seat viewer
Solution Approach 1:
The patent applies dynamics by making the distortion correction parameters adjustable and viewable from multiple seating positions. The system dynamically adapts the correction based on whether the viewer is in the driver seat or passenger seat, allowing the same display to optimize for different positions rather than being fixed for one position only
Solution Approach 2:
The patent implements universality by designing the display system to serve multiple viewer positions (driver and passenger) with a single correction mechanism. The distortion correction is configured to accommodate both seating positions, making the display universally viewable without requiring separate correction systems for each position
2Adaptability or versatility
If the windshield has a wide viewing angle, then the image can be viewed from both driver and passenger seats, but the image distortion varies significantly depending on viewer position
Solution Approach 1:
The patent applies local quality by implementing different distortion correction parameters for different regions of the windshield corresponding to driver and passenger viewing zones. Each area of the display is optimized for its specific viewing position, allowing the wide-angle display to maintain image quality across different locations rather than applying uniform correction
Data Source
AI summary
It is an object of the present disclosure to display an image that is optimal for each viewer. A display control apparatus includes a distortion correction selecting section that determines a display position that is a position, on a screen, at which an image of content is displayed, determines a viewer position that is a position of a viewer who views the image, and determines, according to the viewer position, transformation information used to correct the image such that a distortion in the image appears reduced to the viewer when the viewer views the image displayed at the display position on the screen; and a distortion correction processor that renders a correction image that is an image obtained by correcting the image using the transformation information to generate correction-image rendering data that is output to the display apparatus.