Real-Time Image Distortion Compensation in Immersive Theater
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Solution Overview
Problem
Immersive theater systems like ScreenX and IMAX Dome suffer from viewpoint distortion issues due to varying seating positions, leading to image quality degradation and increased conversion time, as existing methods require multiple image conversion processes.
Innovation Solution
A method and apparatus for real-time content viewpoint distortion compensation using single sampling, which involves creating geometry data of the theater screen, mapping seating positions, generating a grid mesh, and creating a compensation map to minimize distortion, allowing for rapid image conversion without quality loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If multiple image conversion processes are performed to compensate for viewpoint distortion, then image quality compensation is improved, but conversion time increases and image quality degrades
Solution Approach 1:
The patent combines multiple image conversion processes (IMR warping and geometry compensation) into a single unified conversion process. By merging these steps, the system achieves viewpoint distortion compensation without the time loss and quality degradation associated with sequential conversions, directly resolving the contradiction between compensation precision and conversion time.
Solution Approach 2:
The patent pre-calculates and stores distortion compensation parameters for different seating positions before the actual image conversion. This preliminary action allows the system to perform rapid single-step conversion during playback without time-consuming real-time calculations, reducing conversion time while maintaining compensation quality.
2Manufacturing precision
If multiple image conversion processes are performed to compensate for viewpoint distortion, then image quality compensation is improved, but image quality degradation increases
Solution Approach 1:
The patent merges multiple conversion steps into a single operation, eliminating the cumulative quality degradation that occurs when performing sequential conversions. By integrating IMR warping and geometry compensation into one unified process, the system maintains higher image quality while achieving the same distortion compensation effect.
3Manufacturing precision
If seating-dependent image is provided beforehand to minimize distortion, then image quality is improved, but the process becomes complex and time-consuming
Solution Approach 1:
The patent pre-calculates distortion compensation parameters for various seating positions and stores them in advance. This preliminary action eliminates the need for complex real-time calculations during playback, reducing process complexity while maintaining high image quality through accurate distortion compensation.
Solution Approach 2:
The patent uses parameter-based distortion compensation by pre-calculating and storing distortion parameters for different seating positions. Instead of performing complex geometric transformations in real-time, the system simply applies pre-computed parameters, significantly simplifying the processing workflow while maintaining image quality.
4Manufacturing precision
If conventional two-step conversion method is used, then distortion compensation is achieved, but conversion speed decreases
Solution Approach 1:
The patent combines two sequential conversion steps (IMR warping followed by geometry compensation) into a single integrated conversion operation. This merging eliminates the time loss between steps and reduces overall conversion time while maintaining the same distortion compensation accuracy, directly improving conversion speed.
Solution Approach 2:
The patent performs distortion compensation calculations in advance and stores the results, enabling rapid single-step conversion during actual playback. This preliminary computation eliminates the need for time-consuming real-time multi-step conversions, significantly improving conversion speed while preserving compensation quality.
Data Source
AI summary
The present invention includes a) creating geometry data of a theater screen, and mapping position information of seating on the geometry data to reconstruct a virtual theater structure, b) generating a grid mesh for each seat of the theater screen without changing edges of the theater screen, and c) generating a compensation map with minimized distortion of the grid mesh for each seat, and based on this, single-sampling compensating a pixel of an image to be displayed on the theater screen by the compensation map.