Stereoscopic Video Reproducing Apparatus Parallax Control
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Solution Overview
Problem
Current stereoscopic video recording and reproduction technologies face challenges in efficiently managing parallax-based stereoscopic video content, leading to eye fatigue, limited regional distribution, and inadequate control over 3D display settings, especially when mixing 2D and 3D images, and lack of effective eye fatigue warnings or adjustments.
Innovation Solution
A method for recording and reproducing stereoscopic video that calculates an eye fatigue evaluation value based on parallax angle variation, time, and frequency, encoding the content to limit eye fatigue, and includes a system for displaying the maximum parallactic angle to users, using video generating blocks for left and right eyes, and a stereoscopic video reproducing apparatus with depth generation and blending circuits to alleviate eye strain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If stereoscopic video with large parallax angle variation is recorded to enhance 3D effect, then the degree of three-dimensionality is improved, but eye fatigue increases
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the parallax angle based on the evaluation value. When the evaluation value (indicating eye fatigue risk) exceeds a threshold, the parallax angle is reduced to alleviate eye fatigue. This is achieved through the control unit that modifies the stereoscopic video parameters in real-time based on the calculated evaluation value from parallax angle variations.
2Shape
If parallax angle is increased to enhance stereoscopic effect, then three-dimensionality is improved, but the frequency of eye movement in focal direction increases causing eye fatigue
Solution Approach 1:
The patent implements feedback by calculating an evaluation value based on the amount of parallax angle variation, the time it takes for variation, and the number of times variation occurs. This evaluation value is fed back to the control unit, which then adjusts the parallax angle to prevent excessive eye movement and reduce eye fatigue while maintaining acceptable stereoscopic effect.
3Reliability
If stereoscopic video content is distributed with regional restrictions, then content protection is improved, but distribution flexibility is reduced
Solution Approach 1:
The patent applies dynamics by making regional restriction settings changeable and adaptable. The reproducing apparatus can dynamically adjust regional restriction parameters based on user preferences or authorization, allowing flexible distribution strategies while maintaining content protection. The system supports different restriction levels and can be configured for various distribution scenarios.
Data Source
AI summary
The present invention is for more optimally performing recording and reproduction of stereoscopic video. In the present invention, parallax information is utilized to store, in a recording medium, stereoscopic video including left-eye images and right-eye images. Particularly, for video content that contains stereoscopic images, information is obtained regarding the amount of variation in parallactic angle having a given or larger value, a variation time that the variation in parallactic angle takes, and the number of times that the variation in parallactic angle occurs. An evaluation value is calculated that corresponds to the degree of eye fatigue on the basis of the amount of variation, the variation time, and the number of times of the variation. According to the present invention, the video content is encoded in such a manner that the evaluation value is within a given range, and then recorded in the recording medium.