Display Device Chromatic Aberration Correction via Gaze Tracking
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Solution Overview
Problem
Display devices struggle to maintain responsiveness and image quality, especially when the visual field changes and the displayed world is moving, leading to a potential loss of presence due to increased computational burdens and delayed image rendering.
Innovation Solution
A display device with a gazing point acquisition system that corrects chromatic aberration by adjusting parameters based on the user's viewpoint or predicted position, ensuring timely and accurate image output through an eyepiece lens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If resolution is increased and complex computations are performed for realistic image rendering, then image quality is improved, but processing time increases and responsiveness deteriorates
Solution Approach 1:
The patent pre-calculates and stores chromatic aberration correction parameters for multiple viewpoint positions before actual image rendering. When the user's viewpoint changes, the system simply retrieves pre-computed parameters rather than performing complex real-time calculations, thus maintaining high image quality while ensuring responsive display updates
Solution Approach 2:
The system dynamically adjusts chromatic aberration correction parameters based on the user's current viewpoint position. By detecting viewpoint changes and selectively applying appropriate pre-computed correction data, the system adapts to varying viewing conditions without requiring full re-computation, balancing image quality and processing speed
2Manufacturing precision
If chromatic aberration correction is applied for all viewpoint positions, then image quality is improved, but computational burden increases and may cause display delays
Solution Approach 1:
The patent applies chromatic aberration correction selectively based on the user's actual viewpoint position. Instead of uniformly correcting all image regions, the system identifies the relevant viewpoint area and applies correction parameters specifically to that region, reducing overall computational burden while maintaining correction quality where the user is actually looking
Solution Approach 2:
The system uses different correction parameters for different viewpoint positions rather than applying a single universal correction. By changing parameters based on detected viewpoint and selecting from pre-computed sets, the system achieves accurate local correction without the computational cost of universal real-time correction
Data Source
AI summary
A display device for displaying an image through a lens specifies a position of a pupil of a user on the basis of a gazing point on a display panel. Parameters used to correct lens distortions of images in red, green, and blue included in data of a display image are prepared in association with representative points of gazing points. The display device interpolates parameters on the basis of a positional relation between the position of an actual gazing point or a predicted value thereof and a representative point, and corrects the display image per primary color using the interpolated parameters, thereby correcting chromatic aberrations.