Video Signal Block Merging for Encoding Efficiency
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Solution Overview
Problem
The increasing demand for high-resolution and high-quality images leads to higher data volumes, resulting in increased costs for transmission and storage, and existing video compression techniques do not efficiently handle stereographic image content.
Innovation Solution
A method and apparatus for efficiently splitting and merging encoding/decoding blocks in video signals, allowing for square or non-square blocks to be transformed, and using merge target candidate blocks to improve encoding/decoding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional video compression techniques are used for high-resolution images, then transmission and storage costs increase, but image quality and resolution requirements cannot be met
Solution Approach 1:
The current block is divided into multiple sub-blocks for independent processing. The partitioning unit divides the current block into first and second blocks, which are then further divided into sub-blocks. This segmentation allows for more granular prediction and transform operations, improving compression efficiency while maintaining high image quality.
Solution Approach 2:
Different prediction modes and transform types are applied to different sub-blocks based on their local characteristics. The prediction unit determines different prediction modes for different sub-blocks, and the transform unit applies different transform types (DST, DCT, or skipped) to different sub-blocks, optimizing compression for each local region.
2Productivity
If blocks are merged for prediction or transform, then processing efficiency improves, but block shape constraints limit flexibility
Solution Approach 1:
The patent allows merging of blocks with different shapes (square or non-square) to form merged blocks of various configurations. The prediction unit and transform unit can process these asymmetric merged blocks flexibly, determining prediction modes and transform types based on the actual merged block shape rather than requiring uniform square blocks.
Solution Approach 2:
The system dynamically determines prediction modes and transform types based on the actual block configuration. The prediction unit selects from multiple prediction modes based on block characteristics, and the transform unit dynamically chooses between DST, DCT, or skipped transform types based on the merged block shape and content, rather than using fixed processing for all blocks.
Data Source
AI summary
A method for decoding a video according to the present invention may comprise: determining merge target candidate blocks of a current coding block, specifying at least one among the merge target candidate blocks, and generating a merged block by merging the specified merge target candidate block and the current coding block.