Depth Map Adjustment Circuit for 3D Display Convergence Alignment
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Solution Overview
Problem
In 3D display systems, improper alignment of the convergence plane with the focal plane can lead to uncomfortable viewing experiences due to mismatched depth settings, resulting in either objects appearing too far or too near, or having insufficient or excessive stereo effect.
Innovation Solution
A depth control method and apparatus that dynamically adjust depth-related information maps based on quality measurement results, using a quality measurement circuit to estimate a confidence level and an adjustment circuit to apply adaptive depth adjustments, ensuring optimal depth settings for improved 3D viewing comfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If fixed depth settings are used in 3D display, then device complexity is reduced, but viewing comfort deteriorates due to misaligned convergence planes
Solution Approach 1:
The system automatically measures depth map quality and adjusts convergence plane settings without user intervention. The quality measurement circuit and adjustment circuit work autonomously to optimize depth parameters, eliminating the need for manual configuration while maintaining viewing comfort across different content types.
Solution Approach 2:
The system dynamically changes depth-related parameters (convergence plane distance, disparity values) based on measured quality metrics. By adjusting these parameters according to the confidence level derived from depth map quality assessment, the system adapts to different 3D content characteristics and optimizes viewing comfort.
2Ease of operation
If adaptive depth adjustment is implemented, then viewing comfort improves, but device complexity increases
Solution Approach 1:
The system divides the depth control function into separate modules: a quality measurement circuit that assesses depth map quality, a confidence level estimation unit, and an adjustment circuit that applies corrections. This segmentation allows each component to perform its specific function efficiently, managing overall system complexity through functional decomposition.
Solution Approach 2:
The system implements a feedback loop where the quality measurement circuit continuously evaluates depth map quality, the confidence level is estimated from these measurements, and the adjustment circuit uses this feedback to modify convergence plane settings. This closed-loop control optimizes viewing comfort while maintaining manageable complexity through systematic feedback processing.
3Manufacturing precision
If depth-related information maps are adjusted dynamically, then stereo display quality improves, but processing time increases
Solution Approach 1:
The system performs quality measurement and depth adjustment in advance during the content preparation or initial playback phase. By pre-calculating the confidence level from depth map quality and determining appropriate convergence plane settings beforehand, the system reduces real-time processing requirements while maintaining high depth alignment accuracy during playback.
Data Source
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AI summary
An exemplary depth control method includes following steps: receiving input images corresponding to different views; generating at least one depth-related information map according to the input images; estimating a confidence level by measuring quality of the depth-related information map; and adjusting the depth-related information map according to the confidence level. Besides, an exemplary depth control apparatus (100) employing the proposed depth control method is provided, where the depth control apparatus (100) includes a depth-related information map generation circuit (102), a quality measurement circuit (104, 200, 400) and an adjustment circuit (106, 600, 700).