3D Display Scaling by Sighting Distance to Reduce Geometrical Distortion
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Solution Overview
Problem
Current 3D stereoscopic display technologies suffer from geometrical distortion and degraded viewing experiences due to varying screen sizes and environmental factors, leading to inconsistent stereoscopic phantom sizes and perceptions.
Innovation Solution
A method and system that adjusts the size of a stereoscopic image based on the sighting distance between the viewer and the display terminal, using a detecting module to obtain the sighting distance and an adjusting module to scale the image accordingly, thereby alleviating geometrical distortion and enhancing the viewing experience.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the screen size is increased to provide a more immersive viewing experience, then the viewing immersion is improved, but the geometrical distortion of the stereoscopic phantom increases
Solution Approach 1:
The patent applies dynamics by making the image scaling factor adjustable based on viewing distance. The system dynamically changes the display parameters (scaling factor) according to the actual viewing conditions, transitioning from a static fixed scaling to a dynamic adaptive scaling that compensates for geometrical distortion while maintaining immersion across different screen sizes and distances
Solution Approach 2:
The patent changes the scaling factor parameter adaptively. By calculating the viewing distance and using it to determine an appropriate scaling factor, the system adjusts the image dimensions to compensate for perspectival distortion. This parameter change allows the same physical screen to present different effective phantom sizes depending on viewing distance, resolving the contradiction between immersion and distortion
2Manufacturing precision
If the stereoscopic phantom size is increased to match real-world objects, then the realism is improved, but the viewing distance requirement increases
Solution Approach 1:
The system changes the scaling factor parameter based on viewing distance to maintain appropriate phantom size. When viewing distance increases, the scaling factor is adjusted to keep the phantom size proportional to the real-world object it represents. This ensures realism is maintained across different viewing distances without requiring the phantom to be excessively large
3Device complexity
If a fixed scaling factor is used for all viewing distances, then the system complexity is reduced, but the geometrical distortion cannot be compensated
Solution Approach 1:
The patent implements feedback by measuring the actual viewing distance and using this information to adjust the scaling factor. The system continuously monitors viewing conditions and adapts the display parameters accordingly, creating a closed-loop control system that compensates for distortion while maintaining manageable complexity through automated measurement and adjustment
Data Source
AI summary
The invention discloses a method, apparatus and system for adjusting a stereoscopic image, a television set and stereoscopic glasses, wherein the method includes: receiving and displaying, by a display terminal, a three-dimensional stereoscopic image; transmitting, by a distance sensor, a sensing signal and obtaining a sighting distance between the display terminal and a user according to the sensing signal; and adjusting the size of the three-dimensional stereoscopic image according to the sighting distance. In the invention, stereoscopic geometrical distortion can be alleviated or even eliminated to thereby improve real experience feelings of watching the 3D stereoscopic display.