VR Display Resolution Reduction via Color Channel Segmentation
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Solution Overview
Problem
Display devices in VR or AR systems often face limitations in size, distance, and power, leading to reduced spatial resolution in one or more color channels, resulting in visual artifacts that negatively impact user experience.
Innovation Solution
A display device architecture with light emitter arrays of varying spatial resolutions, combined with an anti-aliasing filter that applies convolution kernels to reduce perceived differences in spatial frequencies between actual and desired images, ensuring improved image quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by stationary object
If the display device uses reduced spatial resolution in one or more color channels to meet size and power limitations, then the device complexity and power consumption are reduced, but visual artifacts and image quality deteriorate
Solution Approach 1:
The display device segments the light emitter arrays by color channel, with each channel having different spatial resolutions. The first light emitter array (e.g., blue channel) operates at full resolution while the second light emitter array (e.g., red channel) operates at reduced resolution. This segmentation allows power and complexity reduction in less visually sensitive channels while maintaining image quality in more sensitive channels.
Solution Approach 2:
The patent applies different spatial resolutions to different color channels based on their visual sensitivity characteristics. The blue channel (first light emitter array) uses higher resolution because the human eye is more sensitive to blue spatial frequencies, while the red channel (second light emitter array) uses reduced resolution where visual sensitivity is lower. This local quality differentiation optimizes the balance between power consumption and perceived image quality.
2Device complexity
If the display device reduces spatial resolution in one or more color channels, then the device size and complexity are reduced, but visual artifacts and perceived image quality worsen
Solution Approach 1:
The display device is segmented into multiple light emitter arrays corresponding to different color channels, each with independently optimized spatial resolutions. This segmentation reduces overall device complexity by allowing simpler structures in less critical channels while maintaining higher resolution only where necessary for visual quality.
Solution Approach 2:
Different spatial resolution qualities are applied locally to different color channels based on human visual sensitivity. The blue channel maintains high spatial resolution quality while the red channel uses reduced resolution, optimizing the overall image quality while reducing device complexity and resource requirements.
3Use of energy by moving object
If the display device uses different spatial resolutions for different color channels, then power consumption and device size are reduced, but the perceived differences in spatial frequencies between actual and desired images increase
Solution Approach 1:
The image processing unit applies preliminary spatial filtering to the input image data before rendering, pre-processing the data to compensate for the reduced resolution in certain color channels. This preliminary action mitigates the loss of spatial frequency information by adjusting the input data to account for the resolution differences, reducing perceived visual artifacts.
Solution Approach 2:
The patent changes the spatial resolution parameter differently for each color channel based on human visual sensitivity characteristics. The blue channel maintains higher spatial resolution parameters while the red channel uses reduced parameters, optimizing energy consumption while minimizing perceived information loss through differential parameter adjustment.
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 enhances image quality by minimizing visual artifacts caused by reduced spatial resolution, providing a more immersive and enjoyable VR or AR experience.
Implementation Method 1
The display device may include one or more waveguides that may converge the light emitted from the plurality of first light emitters and the light emitted from the plurality of second light emitters to form an image by overlapping the light from the first light emitters and the light from the second light emitters at a spatial region
Data Source
AI summary
A display device may have multiple light emitter arrays. Each array may include multiple light emitters that emit light of a color. One or more of the arrays may have a reduced spatial resolution compared to other arrays as the size of the light emitters in the arrays with the reduced resolution may be larger than other light emitters. The display device may include one or more waveguides that converge light emitted from light emitters of different colors to form an image by overlapping the light at a spatial region. The display device may include an image processing unit that applies an anti-aliasing filter to reduce any visual effect perceived by users due to the reduced resolution in one or more color channels. The anti-aliasing filter may include convolution kernels that convolve input color values of different colors and may combine the convolution result for output color values of a color.