Re-projection Module for Multiple-View Displays
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Solution Overview
Problem
Current 3D video technologies, such as stereography, lenticular displays, and parallax barriers, require significant processing power, time, and storage to render multiple viewpoints, leading to slow rendering times and undesirable results.
Innovation Solution
A system and method for creating multiple novel views using a re-projection module that receives a computer-generated image with depth information, generates alternate images by calculating disparity and distortion maps, and applies custom adaptive sharpening filters to enhance high-frequency components, allowing for rapid creation of 3D scenes and views for auto-stereographic and multiple view displays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If current re-projection techniques are used to create multiple views, then 3D images can be generated, but the rendering process is slow and requires hundreds of hours per frame
Solution Approach 1:
The patent pre-calculates and stores depth maps, disparity maps, and distortion maps before actual rendering. These pre-computed data structures enable rapid view synthesis without re-rendering geometry, reducing rendering time from hundreds of hours to minutes per frame.
Solution Approach 2:
Instead of rendering geometry from scratch for each view, the patent copies and transforms pixel data from a reference view using pre-computed disparity and distortion maps. This copying approach with transformation significantly accelerates the rendering process while maintaining image quality.
2Adaptability or versatility
If multiple views are provided for lenticular displays or parallax barriers, then different viewpoints can be achieved, but processing power and storage costs increase significantly
Solution Approach 1:
The patent creates a universal set of pre-computed maps (depth, disparity, distortion) that can be used to generate any number of views from a single reference image. This multi-functional approach allows the same data structures to support multiple viewpoint generation, reducing processing power requirements compared to rendering each view independently.
Solution Approach 2:
The patent varies viewing parameters (viewpoint position, camera angle) by transforming the pre-computed maps rather than re-rendering geometry. This parameter-based approach enables efficient generation of multiple views with different viewpoints while minimizing processing power consumption.
3Productivity
If current re-projection techniques are used, then alternate views can be created, but the results are undesirable due to artifacts and quality issues
Solution Approach 1:
The patent applies view-dependent sharpening filters that adapt to local image characteristics. The sharpening strength and parameters are adjusted based on the specific region being synthesized, preserving high-frequency details in important areas while avoiding artifacts in others, thereby improving overall image quality.
Solution Approach 2:
The patent replaces traditional geometry-based rendering with a texture-mapping approach using pre-computed disparity and distortion maps. This substitution eliminates many rendering artifacts while maintaining the ability to generate multiple views, significantly improving image quality without sacrificing view generation capability.
Data Source
AI summary
Systems and methods are provided that allow for the rapid creation of multiple novel views for applications. These multiple views may allow for not only stereo views but also for different viewpoints of a stereographic scene to be presented, or for a time progression of the stereo scene to be presented, where a viewpoint is altered with respect to time. The systems and methods may be employed to create the content for auto-stereographic displays or multiple view systems that use a plurality of novel views to display stereo media. Such displays or multiple view systems may include those employing parallax barriers or lenticular lenses.