Motion Prediction Candidate Selection for Image Block Encoding
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Solution Overview
Problem
Existing image encoding and decoding technologies require improvements in performance, particularly for image encoding and decoding, to handle the increasing demand for multimedia data processing.
Innovation Solution
An image encoding/decoding method and device that determines a motion information encoding mode, configures a motion information prediction candidate group, and performs inter prediction based on motion information of a target block.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional image encoding methods are used, then the encoding process is simple, but the encoding performance is insufficient
Solution Approach 1:
The motion information prediction candidate group is segmented into multiple types (spatial candidates, temporal candidates, combined candidates) with different derivation methods. This segmentation allows the encoder to select appropriate candidates based on block characteristics, improving encoding performance while managing complexity through structured organization.
Solution Approach 2:
The motion information prediction candidate group is configured dynamically based on the motion information encoding mode and block characteristics. The encoder adapts the candidate group composition and selection strategy according to different scenarios, enabling flexible optimization of encoding performance without requiring a fixed complex structure.
2Measurement precision
If motion information is represented with high precision, then the prediction accuracy is improved, but the bit representation increases
Solution Approach 1:
The encoder uses feedback from the motion information encoding mode and block characteristics to adaptively configure the prediction candidate group. This feedback mechanism allows the system to select the most appropriate candidates for each block, achieving high prediction accuracy while minimizing the bits required by avoiding unnecessary precision for blocks where it is not needed.
Solution Approach 2:
The system changes parameters of the motion information representation based on the encoding mode and block type. By adapting the precision and derivation method of motion candidates according to different scenarios, the system maintains high prediction accuracy where necessary while reducing bit representation where lower precision suffices.
Data Source
AI summary
An image encoding/decoding method and apparatus according to the present invention may determine a motion information encoding mode of a target block, configure a motion information prediction candidate group according to the motion information encoding mode, select one candidate from the motion information prediction candidate group so as to induce the selected candidate as motion information of the target block, and perform inter-prediction on the target block on the basis of the motion information of the target block.