Glasses-Free 3D Display Crosstalk Reduction via Dynamic View Shifting
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Solution Overview
Problem
Non-glasses type 3D display systems suffer from crosstalk issues due to overlapping light from different pixel columns, leading to blurred contours and deteriorated picture quality.
Innovation Solution
A multi-viewpoint image display device with a tracker and controller that adjusts the position and luminance of sub-views to provide targeted left-eye and right-eye images based on the user's position, using a display panel and visual field separator to minimize crosstalk and enhance the 3D effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a non-glasses type multi-viewpoint display system is used to provide 3D effect without glasses, then ease of operation is improved, but crosstalk occurs between images leading to deteriorated picture quality
Solution Approach 1:
The patent implements dynamic adjustment of the multi-view image positions based on the user's face position tracking. The controller shifts the positions of multiple views in real-time according to the tracked face position, ensuring that the left-eye and right-eye images remain properly aligned with the user's eyes even as the user moves. This dynamic adaptation prevents crosstalk while maintaining the glasses-free 3D viewing experience.
Solution Approach 2:
The patent adjusts the luminance parameters of sub-views based on their distance from the target views. By applying weight values according to distances and adjusting luminance accordingly, the system optimizes the visual separation between left-eye and right-eye images. This parameter adjustment reduces crosstalk by enhancing the contrast and clarity of the respective eye images without requiring glasses.
2Stability of the object's composition
If the positions of multi-view images are fixed to provide stable 3D effect, then stability is improved, but the system cannot adapt when user changes position leading to increased crosstalk
Solution Approach 1:
The system transitions from fixed image positions to dynamic position adjustment. The tracker continuously monitors the user's face position, and the controller dynamically shifts the multi-view image positions in response to user movement. This maintains stable 3D effect for each user position while adapting to position changes, preventing crosstalk that would occur with fixed positioning.
Solution Approach 2:
The patent implements a feedback loop where the tracker monitors user face position and provides this information to the controller, which then adjusts the multi-view image positions accordingly. This closed-loop control system ensures that the display adapts to user position changes in real-time, maintaining optimal image alignment and preventing crosstalk while preserving 3D effect stability.
Data Source
AI summary
A multi-viewpoint image display device is provided. The display device includes a tracker configured to track a position of a face of a user according to a user shifting position, a display configured to provide a multi-view and to select and provide first and second target views of the multi-view as user's left-eye and right-eye images, and a controller configured to shift positions of the multi-view and to provide the shifted multi-view so that the first and second target views are provided as the user's left-eye and right-eye images based on the tracked face position of the face of the user.