Adjusting Stereoscopic Convergence Plane for Depth Resolution
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Solution Overview
Problem
Stereoscopic cameras often have convergence distances that vary from a human's natural viewing distance, causing discomfort such as headaches and eye muscle pain due to inconsistent 3D image rendering.
Innovation Solution
A method and system that adjust the convergence plane of stereoscopic images based on the predominance of foreground or background features, using a computing device to shift the images and adjust disparity values to align with the viewer's natural convergence distance, thereby improving depth resolution and reducing viewing discomfort.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the stereoscopic camera uses a fixed convergence distance (toe-in configuration), then the camera can capture 3D images with depth effect, but the convergence distance may not match the human's natural viewing distance, causing viewing discomfort such as headaches and eye muscle pain
Solution Approach 1:
The patent applies dynamics by making the convergence plane adjustable rather than fixed. The system dynamically shifts the convergence plane to different depths based on scene analysis, allowing the stereoscopic image to adapt its convergence distance to match human natural viewing conditions while maintaining 3D rendering consistency. This resolves the contradiction by enabling the convergence distance to vary appropriately for different viewing scenarios.
Solution Approach 2:
The patent changes the convergence plane parameter dynamically. By analyzing the scene content and determining the appropriate convergence depth, the system adjusts the convergence plane parameter to optimize both 3D rendering consistency and viewing comfort. This parameter adjustment allows the stereoscopic image to maintain depth effect while aligning with human natural convergence distance.
2Object-affected harmful factors
If the stereoscopic camera uses a parallel configuration (infinity convergence), then the convergence distance matches natural viewing, but depth resolution for foreground features may be insufficient
Solution Approach 1:
The system dynamically adjusts the convergence plane based on scene content analysis. When foreground features are predominant, the convergence plane is shifted to enhance depth resolution for those features. When background features are predominant, the convergence plane is positioned to optimize background rendering. This dynamic adjustment maintains viewing comfort while improving depth resolution as needed.
Solution Approach 2:
The patent applies local quality by optimizing depth resolution locally for predominant features in the scene. Rather than using a uniform convergence plane, the system analyzes whether foreground or background features dominate and adjusts the convergence plane accordingly, providing enhanced depth resolution where it is most needed while maintaining overall viewing comfort.
3Measurement precision
If the convergence plane is adjusted to improve depth resolution for foreground features, then depth resolution improves, but the adjustment requires complex scene analysis and processing
Solution Approach 1:
The system applies self-service by automatically analyzing the scene content and determining the appropriate convergence plane adjustment without requiring manual intervention. The algorithm autonomously identifies whether foreground or background features predominate and adjusts the convergence plane accordingly, reducing processing complexity while maintaining improved depth resolution.
Solution Approach 2:
The patent applies preliminary action by performing scene analysis and convergence plane determination before final image rendering. By pre-processing the scene to identify predominant features and determining the optimal convergence plane in advance, the system simplifies the overall processing complexity while ensuring optimal depth resolution is achieved.
Data Source
AI summary
First and second views of a stereoscopic image are received. In response to determining that the stereoscopic image has a predominance of foreground features, a convergence plane of the stereoscopic image is adjusted to improve a depth resolution of at least one foreground feature within the stereoscopic image for display to a human by a display device. In response to determining that the stereoscopic image has a predominance of background features, the convergence plane is adjusted to position at least most of the stereoscopic image as background features for display to the human by the display device.