Coordinate Transform Circuit for Curved Screen Distortion Correction
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Solution Overview
Problem
Existing head-up displays face challenges in performing high-speed distortion correction for moving images in real-time due to complex operations like integrals and square roots in their coordinate transformation equations, making it difficult to display undistorted images on curved screens effectively.
Innovation Solution
A circuit device with a coordinate transform circuit that uses a second or more order polynomial for coordinate transformation, allowing for efficient computation and real-time processing by performing mapping processing pixel by pixel, reducing computation time and enabling distortion correction suitable for various curved screen displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a theoretical coordinate transformation equation with complex operations (integral and square root) is used, then distortion correction accuracy is improved, but processing speed deteriorates making real-time moving image processing difficult
Solution Approach 1:
The patent changes the mathematical form of the coordinate transformation equation from a theoretical form involving integrals and square roots to a polynomial form (second order or higher). This parameter change in the equation structure maintains distortion correction accuracy while enabling high-speed computation suitable for real-time moving image processing.
Solution Approach 2:
The patent substitutes complex mathematical operations (integrals and square roots) with simpler polynomial computations. This replacement of computational mechanisms allows the coordinate transformation to be performed at high speed using standard digital signal processing techniques, achieving real-time processing capability.
2Manufacturing precision
If complex coordinate transformation operations are performed, then distortion correction quality is improved, but computation time increases
Solution Approach 1:
The patent transforms the coordinate transformation equation into a polynomial form that maintains correction quality while reducing computational complexity. This parameter change allows the system to achieve the same distortion correction quality with significantly reduced computation time.
Solution Approach 2:
The patent segments the coordinate transformation into polynomial terms that can be computed efficiently. By expressing the transformation as a sum of polynomial terms rather than a single complex operation, the computation can be broken down into simpler, faster operations.
Data Source
AI summary
A circuit device (100) includes a coordinate transform circuit (20) and a mapping processing circuit (30). The coordinate transform circuit (20) performs coordinate transformation from an input coordinate (IXY1) to an output coordinate (QXY1). The mapping processing circuit (30) generates a second image (IMG2) to be displayed in a display panel for displaying an image in a curved screen display by performing mapping processing on a first image (IMG1) that is input based on the output coordinate (QXY1). The coordinate transform circuit (20) performs the coordinate transformation from the input coordinate (IXY1) to the output coordinate (QXY1) by performing computation processing using a second or more order polynomial representing the coordinate transformation.