Adaptive 3D Display Overscan Control for Depth-Aware Artifact Reduction
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Solution Overview
Problem
Existing 3D display technologies face issues with overscan, leading to low-frequent aliasing and degraded display quality, especially when content has little depth information, as the current methods require a high degree of overscan to handle scenes with significant depth, resulting in overscan being higher than needed for average content.
Innovation Solution
A display processor that determines the degree of overscan based on depth range parameters, allowing for adaptive overscan adjustment to minimize de-occlusion artifacts while maintaining optimal display quality by characterizing the degree of depth perceived by the viewer, using mapping and content parameters to modulate the overscan.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a high degree of overscan is used to handle scenes with significant depth, then de-occlusion artifacts are reduced, but display quality is degraded due to low-frequent aliasing
Solution Approach 1:
The patent applies dynamics by making the overscan degree adjustable and adaptive rather than fixed. The system dynamically determines the appropriate overscan level based on depth range parameters of the content being displayed, allowing the overscan degree to vary according to the specific scene requirements. This resolves the contradiction by enabling the system to use high overscan only when necessary for scenes with significant depth, while using minimal overscan for flat content to avoid aliasing artifacts.
Solution Approach 2:
The patent changes the parameter of overscan degree from a constant high value to a variable parameter determined by depth range analysis. By calculating depth range parameters from the 3D image data and using them to modulate the overscan degree, the system adapts the overscan level to match the actual depth characteristics of the content. This prevents unnecessary overscan-induced aliasing while maintaining sufficient overscan to prevent de-occlusion artifacts when needed.
2Reliability
If a high degree of overscan is used to handle all content, then de-occlusion artifacts are avoided, but the overscan is higher than needed for average content, wasting display area
Solution Approach 1:
The system dynamically adjusts the overscan degree based on the depth range parameters of each scene rather than applying a constant high overscan to all content. This allows the effective display area to be maximized for average content with little depth information, while still providing sufficient overscan protection for scenes with significant depth variations. The adaptive approach ensures that overscan is applied only to the extent necessary for each specific scene.
Solution Approach 2:
The patent changes the overscan parameter from a fixed conservative value to a dynamically determined value based on depth range analysis. By calculating the actual depth range of the content and using it to modulate the overscan degree, the system reduces unnecessary overscan for flat content (preserving display area) while maintaining adequate overscan for 3D-rich content (preventing de-occlusion artifacts).
Data Source
AI summary
A display processor and computer-implemented method are provided for processing three-dimensional [3D] image data for display on a 3D display. The 3D display is arranged for emitting a series of views of the 3D image data which enables stereoscopic viewing of the 3D image data at multiple viewing positions. The series of views may be displayed on the 3D display using overscan. The degree of overscan may be determined as a function of one or more depth range parameters, the one or more depth range parameters characterizing, at least in part, a degree of depth perceived by a viewer when the series of views is displayed on the 3D display.