Crosstalk Reduction in Retarder Stereoscopic Displays
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Solution Overview
Problem
Current stereoscopic displays suffer from crosstalk, a distortion where one eye views the image intended for the other eye, especially exacerbated by high contrast and brightness, and user position, particularly vertical viewing angle, significantly affects crosstalk performance, leading to reduced user comfort.
Innovation Solution
A method and system that determine the vertical viewing angle and calculate a crosstalk reduction coefficient using a predetermined table to update pixel intensity values, effectively reducing crosstalk across various user positions by adjusting pixel intensities based on the calculated coefficient.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a predetermined crosstalk reduction matrix is used to update pixel intensity values, then crosstalk compensation is achieved, but the compensation cannot adapt to changes in user position
Solution Approach 1:
The patent implements dynamic crosstalk compensation by continuously tracking user position changes and updating the crosstalk reduction matrix in real-time. The system transitions from a static predetermined matrix to a dynamic matrix that adapts to varying viewing angles and user positions, ensuring consistent crosstalk compensation across different viewing conditions.
Solution Approach 2:
The patent employs feedback mechanisms by monitoring user position changes and using this information to adjust the crosstalk reduction parameters. The system measures the actual viewing conditions and feeds this information back to modify the compensation matrix, creating a closed-loop control system that maintains optimal crosstalk reduction regardless of user position.
2Reliability
If complex hardware is used to modify non-transmissive regions of the display, then dynamic crosstalk compensation is achieved, but device complexity increases
Solution Approach 1:
The patent replaces complex mechanical hardware modifications with computational methods. Instead of using physical components to dynamically alter display regions, the system uses software-based algorithms to calculate and adjust crosstalk compensation parameters, substituting mechanical complexity with computational processing.
Solution Approach 2:
The patent achieves dynamic crosstalk compensation by changing software parameters (crosstalk reduction matrix values) rather than modifying physical hardware. The system adjusts numerical parameters in the compensation matrix based on detected user position, avoiding the need for complex hardware mechanisms while maintaining adaptive compensation capability.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach enhances crosstalk performance and user comfort by dynamically compensating for user position, ensuring improved 3D perception regardless of the viewer's angle, specifically for retarder-type stereoscopic displays.
Implementation Method 1
Crosstalk is the distortion of the view of an eye by the image created for the other eye. Crosstalk generally occurs due to high contrast and/or brightness of the display and it significantly disturbs 3 dimensional perceptions.
Implementation Method 2
Another type of stereoscopic display is the polarizing or retarder-type display which comprises micro-polarisers to polarise light array stemming from the display in clockwise or counter-clockwise direction. A polarised eyeglass, one of the glasses of which passes clockwise polarised light and the other passes counter-clockwise polarise light, directs the left and right eye views in accordance with polarisation of the received light array.
Data Source
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AI summary
Present invention provides a novel method and system for crosstalk reduction in retarder-type stereoscopic displays (D), in which the vertical viewing angle (α) of the user (U) is determined and the crosstalk is reduced by refining pixel intensities in accordance with the detected vertical viewing angles (α) and predetermined crosstalk tables. The method ensures user position aware crosstalk reduction. Consequently, user viewing comfort is ensured regardless of user's position in relation to display (D).