Normalized Depth Metadata for Display-Independent 3D Rendering
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Solution Overview
Problem
Existing 3D image rendering technologies fail to accurately provide depth information that is independent of display size and viewing distance, leading to issues like inappropriate perceived depths, viewer fatigue, and eyestrain, especially when images are displayed on various screen sizes and at different viewing distances.
Innovation Solution
The use of percentage z-axis values for depth information, which are translated into normalized values, allowing for the transmission of depth metadata that can be used to accurately reconstruct images and insert objects in 3D space without violating depth cues, independent of display screen size and viewing distance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If absolute z-axis depth values are used for rendering, then depth information is adequate for a specific display screen size, but it fails to accommodate multiple display screen sizes and viewing distances
Solution Approach 1:
The patent changes the parameter format from absolute z-axis depth values to percentage-based depth values. This allows the depth information to be scaled relative to the display size and viewing distance, enabling the same depth metadata to accurately represent depth across multiple display sizes and viewing distances while maintaining depth information accuracy through relative positioning.
Solution Approach 2:
The patent introduces dynamic adaptation where the rendering system adjusts depth perception based on detected or input viewing distance and display size. The percentage-based depth values are dynamically interpreted to maintain appropriate perceived depth regardless of the specific display configuration or viewing conditions.
2Reliability
If objects are rendered at fixed depth positions, then image quality is maintained for a specific display, but objects appear at inappropriate perceived depths on other displays causing viewer fatigue and eyestrain
Solution Approach 1:
The patent transforms fixed absolute depth positions into flexible percentage-based depth positions. This allows objects to be rendered at depth positions that are calculated as percentages of the total depth range, ensuring that perceived depth remains appropriate and comfortable across different display sizes and viewing distances while maintaining reliability of the viewing experience.
3Adaptability or versatility
If grayscale difference images are used for depth metadata, then stereoscopic imaging quality is adequate, but complex applications requiring beyond-stereoscopic depth information are insufficient
Solution Approach 1:
The patent adds a new dimensional approach by introducing percentage-based depth metadata that works in conjunction with or instead of traditional grayscale difference images. This additional dimensional representation of depth information enables complex 3D applications requiring absolute or relative depth control while maintaining compatibility with stereoscopic imaging, thereby reducing information loss for advanced applications.
Data Source
AI summary
Methods and systems for providing and rendering 3D depth information are described. Specifically, the 3D depth information includes z-axis values provided in a normalized percentage format, that defines the position of an object relative to an infinity plane, a display screen, and a viewer, and can be used to render one or more images independent of display screen size and viewing distance.