Video Coding Image Data Correction Mask for Text Clarity
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Solution Overview
Problem
Video coding systems often sacrifice image quality, particularly in common content like text on a single color background, due to efficient compression techniques that result in artifacts such as blurred text edges and incorrect colors, which are prevalent in bi-color images.
Innovation Solution
The implementation of an image data correction mask that identifies uniform color areas in the source device and transmits mask image data to correct color values at the receiver, ensuring accurate color representation without increasing bandwidth requirements or frame rate.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If efficient compression techniques are used to reduce latency and bandwidth, then transmission efficiency is improved, but image quality deteriorates with artifacts like blurred edges and incorrect colors
Solution Approach 1:
The patent segments the image processing into two independent parts: compression processing and color correction processing. The correction mask is generated from the original image and applied after decompression to correct color artifacts without affecting the compression efficiency. This segmentation allows both compression and quality improvement to coexist.
Solution Approach 2:
The patent introduces a correction mask as an intermediary element that mediates between the compressed image data and the final displayed image. The mask contains color correction information that is applied to the decompressed image to eliminate artifacts, acting as a bridge that preserves both compression efficiency and image quality.
2Quantity of substance
If compression techniques are applied to reduce bits transmitted, then bandwidth usage is reduced, but color accuracy deteriorates in uniform color areas
Solution Approach 1:
The patent applies local quality correction by generating a correction mask that specifically targets uniform color areas where artifacts occur. The mask is applied locally to correct color values in affected regions without affecting other parts of the image, thereby improving color accuracy precisely where needed while maintaining overall compression efficiency.
3Productivity
If text edges are compressed with standard techniques, then compression ratio is improved, but text clarity deteriorates with blurred or blinking edges
Solution Approach 1:
The patent performs preliminary action by generating the correction mask from the original image before compression occurs. This mask preserves the precise edge information and color values needed for text clarity, which is then applied after decompression to restore sharp text edges without compromising the compression ratio achieved during transmission.
Data Source
AI summary
A system, article, and method of video coding using an image data correction mask.