Motion Vector Candidate List Segmentation for Video Encoding Efficiency
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Solution Overview
Problem
Existing video encoding and decoding technologies face challenges in efficiently configuring candidate prediction motion vector lists, which affects video encoding/decoding efficiency, especially with high-resolution and high-quality video data.
Innovation Solution
A method and apparatus for configuring a candidate prediction motion vector list by determining spatial and temporal candidate prediction motion vectors from adjacent prediction blocks, including availability information and vector values, to optimize prediction motion vector induction and enhance encoding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a candidate prediction motion vector list is configured using existing methods, then video encoding/decoding can be performed, but the complexity of inducing optimal prediction motion vectors increases and encoding efficiency decreases
Solution Approach 1:
The candidate prediction motion vector list is segmented into multiple candidate groups, where each group contains candidate prediction motion vectors derived from specific spatial or temporal locations. This segmentation allows the decoder to selectively process only relevant candidate groups based on availability flags, reducing the overall complexity of motion vector induction while maintaining encoding efficiency through organized candidate management.
2Measurement precision
If high-resolution and high-quality video data is transmitted using existing wired/wireless wideband circuit lines, then video data can be transmitted, but transmission and storage costs increase
Solution Approach 1:
The patent applies partial action by transmitting only the necessary motion vector candidate information rather than complete motion vector data. The availability flags indicate which candidate groups are present, allowing the receiver to reconstruct video with high quality using only the transmitted partial information, thereby reducing transmission costs while maintaining video quality.
3Measurement precision
If the amount of video data increases with higher resolution and quality, then video quality improves, but transmission and storage requirements increase
Solution Approach 1:
The patent uses copying by deriving candidate prediction motion vectors from previously decoded spatial or temporal blocks. Instead of transmitting redundant motion vector information for each block, the system copies motion vector candidates from reference blocks and uses availability flags to indicate which copies are valid, significantly reducing the quantity of video data while maintaining high quality through efficient prediction.
Data Source
AI summary
Disclosed are a method for inducing a prediction motion vector and an apparatus using the same. An image decoding method can include: a step of determining the information related to a plurality of spatial candidate prediction motion vectors from peripheral predicted blocks of a predicted target block; and a step of determining the information related to temporal candidate prediction motion vectors on the basis of the information related to the plurality of spatial candidate prediction motion vectors. Accordingly, the present invention can reduce complexity and can enhance coding efficiency when inducing the optimum prediction motion vector.