Pixel Shift Imaging for High-Resolution Video Without Block Noise
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Solution Overview
Problem
High-resolution video data compression using orthogonal transforms results in block noise and degradation, and existing methods to enhance resolution, such as pixel shifting, are limited to specific display apparatuses like CRT monitors and require complex synchronization.
Innovation Solution
A display system and method that involves an imaging apparatus shifting pixels physically in units of frames using a solid-state image sensing device or optical member, and a projection video display apparatus that optically performs synchronized pixel shifts to enhance resolution without requiring orthogonal transforms, allowing for flexible application across various display devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If orthogonal transform compression is used for high-resolution video transmission, then data volume is reduced, but block noise and MTF degradation occur
Solution Approach 1:
The imaging period is divided into multiple sub-imaging periods, with each period capturing video at a different resolution. This segmentation allows the system to transmit lower-resolution video data while reconstructing higher-resolution output through temporal integration, avoiding orthogonal transform compression entirely.
2Manufacturing precision
If pixel shifting is used to double video resolution, then resolution increases, but frame frequency is halved and application is limited to specific display apparatuses
Solution Approach 1:
The system dynamically adjusts the imaging resolution in each sub-imaging period based on the pixel shift amount. By varying the imaging resolution adaptively rather than using fixed interlaced scanning, the system achieves resolution enhancement that is compatible with various display apparatuses including projectors, LCDs, and LEDs.
3Manufacturing precision
If pixel shifting is used to enhance video resolution, then resolution doubles, but complex synchronization is required
Solution Approach 1:
The pixel shift amount and imaging resolution for each sub-imaging period are determined in advance based on the characteristics of the display apparatus. This preliminary determination simplifies synchronization by pre-configuring the imaging parameters rather than requiring complex real-time coordination during video capture and display.
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
Enables the compression of data while maintaining high-resolution video quality, reducing signal processing load and avoiding degradation, and allows for the display of high-resolution videos like 8K without the need for orthogonal transforms, with flexible application across different display devices.
Implementation Method 1
shifting pixels in units of frames by moving a solid state image sensing device or an optical member physically
Implementation Method 2
optically performs pixel shift corresponding to pixel shift performed in the imaging apparatus
Data Source
AI summary
In a display system, an imaging apparatus takes a video by shifting pixels in units of frames by moving a solid state image sensing device or an optical member physically. A projection video display apparatus acquires a video taken by the imaging apparatus, optically performs pixel shift corresponding to pixel shift performed in the imaging apparatus at the time of imaging, and projects the video acquired.