Stereoscopic Image Generation Parallax Adjustment
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Solution Overview
Problem
Conventional 3D image display technologies struggle to generate stereoscopic vision effectively, especially with two-view and multi-view video signals that are poor in stereoscopic content, leading to inadequate depth perception in scenes like distant views.
Innovation Solution
A stereoscopic image generation apparatus and method that detect parallax values between left-eye and right-eye image signals, determine the stereoscopic degree, and adjust pixel shifts to enhance stereoscopic vision, using units like parallax value detection, stereoscopic degree determination, and image signal conversion to improve depth perception.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If two-view video signal is used for 3D display, then real 3D image can be expressed, but stereoscopic vision cannot be obtained in distant view images
Solution Approach 1:
The patent changes the parallax parameter dynamically based on scene depth characteristics. For distant view images with small parallax, the system adjusts the parallax value to enhance stereoscopic vision. This is achieved by detecting scene type and selectively applying parallax adjustment only to regions where it improves stereoscopic effect without causing discomfort.
Solution Approach 2:
The system dynamically adjusts parallax values based on detected scene characteristics rather than using fixed parallax. The parallax adjustment amount varies according to the scene type (distant view, close-up, etc.), making the stereoscopic display adaptive to different viewing conditions and content types.
2Reliability
If parallax value is increased to improve stereoscopic vision, then depth perception is enhanced, but image distortion and discomfort increase
Solution Approach 1:
The patent applies different parallax adjustment strategies to different regions of the image based on their depth characteristics. Distant view regions receive parallax adjustment to enhance stereoscopic vision, while close-up regions maintain original parallax to avoid distortion. This localized approach ensures stereoscopic vision improvement without introducing harmful distortion anywhere in the image.
Solution Approach 2:
The system applies parallax adjustment partially - only to the extent needed for distant view images and only in regions where it benefits stereoscopic vision. By controlling the adjustment amount to be just sufficient rather than excessive, the system avoids the harmful effects of over-adjustment while still achieving the desired stereoscopic effect.
3Reliability
If pixel shift is applied to adjust parallax, then stereoscopic vision is improved, but processing complexity increases
Solution Approach 1:
The system performs preliminary detection of scene type and parallax characteristics before applying pixel shift adjustment. By pre-identifying which regions need adjustment and calculating the appropriate shift amount in advance, the system streamlines the processing pipeline and avoids complex real-time adjustments during display.
Solution Approach 2:
The patent extracts only the essential parallax adjustment information needed for stereoscopic vision improvement, separating it from the full image processing pipeline. By focusing on detecting and adjusting only the parallax component rather than reprocessing the entire image signal, the system reduces processing complexity while maintaining effectiveness.
Data Source
AI summary
A 3D parallax value detection unit detects a parallax value between a left-eye image signal and a right-eye image signal in a stereoscopic video signal. A stereoscopic degree determination unit determines a stereoscopic degree of the stereoscopic video signal based on the parallax value. In response to the stereoscopic degree, an image signal conversion unit obtains an amount of pixel shift, by which a pixel of the left-eye image signal or the right-eye image signal is to be shifted, and shifts the pixel by the amount of pixel shift. In such a way, a parallax of the left-eye image signal or the right-eye image signal is adjusted.