Video Encoding Impulse Residual Sub-block Segmentation
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Solution Overview
Problem
Existing video compression technologies, such as H.264/AVC, face inefficiencies due to inaccurate pixel predictions, leading to excessive residual signals of impulsive components that negatively impact compression efficiency.
Innovation Solution
A method and apparatus for encoding and decoding video that specifically address impulsive component residual signals by generating predicted blocks, subtracting them from current blocks to create residual blocks, and encoding these residual blocks using A×B encoding to improve compression efficiency, while also considering the presence of impulsive components to optimize encoding modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional video compression techniques (H.264/AVC) are used with standard prediction and encoding methods, then the encoding process is simple and fast, but the compression efficiency deteriorates due to excessive residual signals from impulsive components
Solution Approach 1:
The patent divides the residual block into multiple sub-blocks and processes each sub-block separately using different encoding methods. Specifically, it identifies sub-blocks containing impulsive components and applies specialized encoding only to those regions, while using standard encoding for other areas. This segmentation allows the system to improve compression efficiency for impulsive regions without unnecessarily increasing complexity for the entire block.
Solution Approach 2:
The patent applies different encoding strategies to different regions of the residual block based on local characteristics. It detects impulsive components in specific sub-blocks and applies enhanced encoding methods only where needed, rather than uniformly across the entire block. This local quality approach improves overall compression efficiency while maintaining reasonable encoding complexity by focusing computational resources only where necessary.
2Productivity
If prediction accuracy is improved to reduce residual signals, then compression efficiency improves, but the complexity of prediction and encoding increases
Solution Approach 1:
The patent applies enhanced prediction and encoding methods only partially - specifically to sub-blocks containing impulsive components - rather than to the entire residual block. This partial action approach improves compression efficiency for the most problematic regions while avoiding the excessive complexity that would result from applying the same enhanced methods uniformly across all blocks.
3Productivity
If standard encoding is applied to all residual blocks, then the encoding process is simple, but impulsive component residual signals are not effectively compressed
Solution Approach 1:
The patent detects impulsive components in specific sub-blocks and applies specialized encoding methods only to those regions with impulsive characteristics, while using standard encoding for other areas. This local quality approach ensures that impulsive components are effectively compressed without unnecessarily increasing the complexity of the encoding process for the entire block.
Data Source
AI summary
An apparatus and method for video encoding/decoding considering impulse signal are disclosed. The method for video encoding includes generating a predicted block from predicting a current block and subtracting the predicted block from the current block to generate an M×N residual block, and encoding an A×B residual block containing residual signals of an impulsive component in the M×N residual block to generate a bitstream. The apparatus and the method of the present disclosure improve coding efficiency by efficiently encoding or decoding the residual signals of the impulse component in encoding or decoding videos.