Stereoscopic Image Scaling and Cropping for Parallel-Axis Cameras
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Solution Overview
Problem
Stereoscopic video playback with parallel, non-convergent cameras results in a compromised 3D experience due to the need for computationally extensive reformatting when viewing conditions change, which is inefficient and affects image quality.
Innovation Solution
A method and device for processing stereoscopic images using parallel-axis cameras with a wider field of view, allowing for scaling and cropping to adapt to new viewing conditions on a single screen, maintaining image quality and reducing the need for extensive reformatting by using a processor and memory to adjust the interocular distance and field of view.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If computationally extensive reformatting is performed to adapt stereoscopic images to new viewing conditions, then the 3D experience quality is maintained, but the processing time and computational resources increase significantly
Solution Approach 1:
The patent applies preliminary action by pre-calculating and storing depth information for each pixel during the original stereoscopic image capture or initial processing phase. This depth map data is saved alongside the original images, so when viewing conditions change, the system can directly retrieve and reuse this pre-computed depth information rather than performing computationally extensive reformatting operations. This eliminates the need for real-time depth analysis and significantly reduces processing time while maintaining 3D quality.
2Adaptability or versatility
If stereoscopic images are reformatted for different viewing conditions, then the images can be displayed under new conditions, but the image quality deteriorates due to repeated processing
Solution Approach 1:
The patent performs the critical depth analysis action in advance during initial image processing or capture, storing the results for future use. When viewing conditions change, the system adapts by retrieving pre-computed depth data and applying geometric transformations based on this existing information, rather than performing repeated intensive processing. This preliminary computation approach enables versatile adaptation to multiple viewing conditions while preserving image quality by minimizing repeated processing operations.
3Area of moving object
If parallel-axis cameras with wider field of view are used, then the field of view increases and more viewing conditions can be covered, but the camera separation distance must be adjusted to maintain proper stereoscopic effect
Solution Approach 1:
The patent applies parameter changes by systematically adjusting the camera separation distance (baseline) according to the field of view requirements. When using parallel-axis cameras with wider field of view, the patent modifies the separation distance parameter to maintain appropriate stereoscopic parallax effects. This parameter adjustment allows the system to cover a broader range of viewing conditions and field of view requirements while preserving the quality of the stereoscopic effect, transforming a potential complexity issue into a manageable parameter optimization problem.
Data Source
AI summary
A stereoscopic video playback device is provided that processes original stereoscopic image pairs taken using parallel-axis cameras and provided for viewing under original viewing conditions by scaling and cropping to provide new viewing condition stereoscopic video on a single screen.