Video Coding CU Integration for Header Reduction
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Solution Overview
Problem
Current video coding technologies face inefficiencies in reducing code amounts of header information on the CU and PU layers without increasing processing amounts, which hampers coding efficiency.
Innovation Solution
A video coding apparatus that integrates multiple basic CUs and PUs into a new CU when they have identical block sizes and prediction information, generating a single code string using variable-length and arithmetic coding, thereby reducing redundant header information.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If multiple basic CUs and PUs are processed separately, then processing flexibility is maintained, but code amount of header information increases
Solution Approach 1:
The patent merges multiple basic CUs and PUs that have identical block sizes and prediction information into a single integrated unit. This consolidation reduces the number of separate header information entries that need to be coded, thereby reducing the overall code amount without requiring additional processing complexity since the merging is based on pre-existing identical attributes
2Measurement precision
If basic CUs are divided into smaller units, then prediction precision is improved, but header information redundancy increases
Solution Approach 1:
The patent creates a universal coding structure where a single header information entry can represent multiple basic CUs and PUs that share identical attributes. This multi-functional header entry serves the same prediction precision requirements as multiple separate entries would, while eliminating redundant information through the unified representation
Data Source
AI summary
A video coding apparatus including a dividing part that outputs the coding target picture divided for each coding unit (basic CU); a prediction processor that generates a prediction image by performing one of intra prediction and inter-screen prediction; a difference calculator that generates a difference image by calculating a difference between the generated prediction image and an image corresponding to the prediction image in the coding target picture; a residual coder that generates a residual coefficient by performing transform processing and quantization processing on the generated difference image; an integration unit that integrates a plurality of basic CUs included in an N.times.N-pixel region into one new CU, and a code string generator that generates a code string corresponding to the post-integration new CU by performing variable-length coding and arithmetic coding on coding information and the residual coefficient.