Stereoscopic Display Luminance Adjustment for 3D Moiré Reduction
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Solution Overview
Problem
Naked-eye stereoscopic image display devices experience significant luminance fluctuations due to 3D moiré, causing discomfort and image quality issues when the observer's position changes, as existing solutions fail to effectively address these fluctuations, especially with optical light separating modules like lenticular lenses and parallax barriers.
Innovation Solution
A stereoscopic image display device that includes a stereoscopic display panel with sub-pixels arranged in a matrix, an optical module for distributing light, an observer position measuring unit, a relative position calculating unit, a luminance adjustment amount calculating unit, and a luminance adjustment processing unit, which performs luminance adjustments based on the observer's position to mitigate luminance fluctuations caused by 3D moiré.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an optical light separating module (lenticular lens or parallax barrier) is used to enable naked-eye stereoscopic display, then the need for eyeglasses is eliminated, but luminance fluctuations and 3D moiré occur causing discomfort when the observer's position changes
Solution Approach 1:
The patent applies parameter changes by dynamically adjusting the luminance of pixel groups based on the observer's position. The control unit calculates the observer's position and modifies the luminance parameter of pixel groups to compensate for the luminance fluctuations caused by the optical light separating module, thereby maintaining consistent image quality across different viewing positions.
Solution Approach 2:
The patent implements feedback by using the observer position measuring unit to detect the observer's position and feeding this information back to the control unit. The control unit then adjusts the luminance of pixel groups based on this feedback, creating a closed-loop system that continuously compensates for luminance fluctuations as the observer moves.
2Adaptability or versatility
If the observer's position changes, then the viewing flexibility is improved, but the luminance uniformity deteriorates due to 3D moiré
Solution Approach 1:
The patent changes the luminance parameter of pixel groups dynamically based on the observer's position. By adjusting the luminance of different pixel groups according to their position relative to the observer, the system maintains luminance uniformity across the display even when the observer moves to different positions.
Solution Approach 2:
The patent makes the luminance adjustment dynamic by continuously monitoring the observer's position and real-time adjusting the luminance of pixel groups. This dynamic adaptation allows the display to maintain optimal luminance uniformity regardless of the observer's position, transforming a static display into a dynamically adaptive system.
3Stability of the object's composition
If luminance adjustment processing is performed on all pixel groups, then the luminance uniformity is improved, but the device complexity increases due to additional measurement and control units
Solution Approach 1:
The patent applies local quality by selectively adjusting the luminance of specific pixel groups based on the observer's position rather than uniformly adjusting all pixels. The control unit identifies which pixel groups require luminance adjustment and applies corrections only to those regions, reducing the overall processing complexity while maintaining luminance uniformity where needed.
Solution Approach 2:
The patent segments the display into multiple pixel groups and applies different luminance adjustments to different segments based on the observer's position. This segmentation allows the system to manage complexity by treating different regions independently rather than processing the entire display uniformly.
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
The solution effectively reduces luminance fluctuations, enhancing image quality and comfort by performing real-time luminance adjustments, ensuring consistent image brightness across different observer positions, thereby minimizing the impact of 3D moiré and improving the overall stereoscopic image display experience.
Implementation Method 1
an optical module which distributes light emitted from each of the sub-pixels to different directions from each other
Implementation Method 2
an observer position measuring unit which measures an observing position of an observer
Data Source
AI summary
The stereoscopic image display device includes: an observer position measuring unit which measures the observing position of the observer; an image processing unit which calculates the relative position of the observing position of the observer and the stereoscopic display panel, calculates the luminance adjustment amount suited for stereoscopic image display for the relative position, and performs luminance adjustment processing on the image data according to the luminance adjustment amount; and a stereoscopic display panel unit which projects the image data on which the luminance adjustment processing is performed to the right eye and the left eye of the observer via the stereoscopic display panel.