3D Display Distortion Correction via Pixel Viewpoint Compensation
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Solution Overview
Problem
Existing 3D display systems face image quality degradation due to geometric distortions caused by manufacturing errors or atypical shapes of 3D optical apparatuses, leading to crosstalk and blurred images, especially in glasses-free schemes where parameter estimation schemes are ineffective for partially bent or distorted structures.
Innovation Solution
A distortion correction method that assigns viewpoints to pixels on a display panel, generates compensation values based on image differences, and updates viewpoints to correct distortions, using cameras to capture images at multiple points and determine adjustment values for geometric models, allowing for distortion compensation regardless of the 3D optical apparatus's shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If parameter estimation schemes are used for 3D optical apparatuses, then the system is simple to manufacture, but image quality degrades due to geometric distortions from manufacturing errors or atypical shapes
Solution Approach 1:
The patent changes the approach from estimating parameters to directly measuring actual parameters. It captures images at multiple points on the 3D optical apparatus and uses these measurements to determine actual geometric parameters, thereby resolving the contradiction between manufacturing simplicity and geometric accuracy by adapting to actual manufactured dimensions rather than relying on design values
Solution Approach 2:
The patent replaces the mechanical/physical estimation approach with an optical measurement approach. Instead of relying on physical parameter estimation during manufacturing, it uses image capture and processing to determine actual geometric parameters, substituting a measurement-based system for a manufacturing-based estimation system
2Productivity
If distortion correction is not applied, then the system operates without additional processing, but crosstalk occurs and image quality is degraded
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing compensation values for various points on the 3D optical apparatus. When displaying images, the system retrieves and applies the appropriate compensation values based on the actual position, avoiding real-time complex calculations and enabling efficient distortion correction while maintaining high image quality
Solution Approach 2:
The patent implements feedback by using captured images to determine actual geometric parameters and using these measurements to calculate compensation values. This closed-loop approach ensures that the distortion correction is based on actual measured data rather than theoretical estimates, thereby improving image quality while maintaining processing efficiency through pre-computed compensation
Data Source
AI summary
A method and apparatus for correcting a distortion are provided. The distortion correction method includes displaying a first image on a display panel based on source images that correspond to respective viewpoints of the display panel, generating a second image by capturing the display panel at a first point, and determining a first compensation value to be used to compensate for a distortion of the second image with respect to the display panel.