Video Block Multiple Hypothesis Prediction Coding Efficiency
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Solution Overview
Problem
Conventional video coding techniques, such as MPEG-2, MPEG-4, ITU-T.263, ITU-T.264/AVC, HEVC, and VVC, suffer from low coding efficiency, which is undesirable for digital video applications.
Innovation Solution
The proposed method involves determining whether to apply a first mode to generate a hypothesis of a target block, which is a multiple hypothesis prediction block coded with a second mode, and performing the conversion based on this determination, or generating at least one hypothesis of a target block based on a prediction method or coding method, and performing the conversion using that hypothesis.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional video coding techniques are used, then device complexity is reduced, but coding efficiency deteriorates
Solution Approach 1:
The patent segments the prediction process into multiple hypotheses, where each hypothesis represents a different prediction mode or parameter combination. The encoder generates multiple prediction hypotheses for each block and selects the best one, dividing the complex prediction task into manageable segments that can be evaluated independently.
Solution Approach 2:
The patent applies preliminary action by pre-generating multiple prediction hypotheses before final encoding decisions are made. These hypotheses include pre-computed prediction blocks, motion vectors, and mode selections that are prepared in advance and then evaluated against rate-distortion criteria to determine the optimal encoding path.
2Reliability
If multiple hypothesis prediction is applied, then coding gain is improved, but computational complexity increases
Solution Approach 1:
The patent implements partial action by generating a limited number of prediction hypotheses (e.g., 1-3 hypotheses per block) rather than exhaustively searching all possible prediction modes. This selective generation of hypotheses provides sufficient coding gain while avoiding the computational burden of complete mode exploration, achieving an optimal balance between performance and complexity.
Data Source
AI summary
Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: determining, during a conversion between a target block of a video and a bitstream of the target block, whether to apply a first mode to generate a hypothesis of the target block, the target block being a multiple hypothesis prediction block coded with a second mode; and performing the conversion based on the determining. Compared with the conventional solution, the proposed method can advantageously improve the coding efficiency and performance.