Video Block Partitioning with Override Flags for Better Compression
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Solution Overview
Problem
Existing video coding standards, such as HEVC, struggle to further compress video data without sacrificing picture quality, necessitating new technology for improved bitrate reduction.
Innovation Solution
Implementing a method for video encoding and decoding that allows each image region to have its own partition constraint information, overriding or adhering to parameter set constraints through an override flag, enabling efficient bitstream parsing and flexible block partitioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If conventional video coding standards (HEVC) are used for compression, then bitrate reduction is achieved, but further compression without quality loss becomes difficult
Solution Approach 1:
The patent applies segmentation by dividing the video picture into multiple blocks and further partitioning them into sub-blocks of different sizes. This hierarchical block partitioning allows different compression strategies to be applied to different regions, achieving better overall compression efficiency while maintaining picture quality in critical areas.
Solution Approach 2:
The patent implements local quality by allowing different block partitioning configurations for different regions of the picture. By adapting the partitioning granularity and mode to local picture characteristics, the encoder can maintain high quality in important regions while applying more aggressive compression in less critical areas.
2Device complexity
If uniform block partitioning is used across the picture, then encoding complexity is reduced, but compression efficiency is limited
Solution Approach 1:
The patent uses segmentation to divide the picture into multiple blocks that can be processed independently with different partitioning configurations. This allows the encoder to optimize compression for each block based on its characteristics while maintaining manageable processing complexity through the modular block-based approach.
Solution Approach 2:
The patent implements dynamic block partitioning where the partitioning configuration is adapted based on picture content characteristics. This dynamic approach allows the encoder to increase compression efficiency in suitable regions while maintaining reasonable complexity through selective application of complex partitioning modes.
3Adaptability or versatility
If each image region has its own partition constraint information, then block partitioning flexibility is improved, but bitstream complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the picture into multiple blocks, each capable of having its own partition constraint information. This segmentation allows flexible partitioning adaptation to local picture characteristics while managing bitstream complexity through the structured block-based framework.
Solution Approach 2:
The patent implements local quality by allowing different partition constraint information for different image regions. This enables each region to be optimized independently for its specific characteristics, achieving better partitioning flexibility while the regional approach helps manage overall bitstream complexity.
Data Source
AI summary
The present disclosure provides an encoding apparatus and a decoding apparatus, as well as an encoding method and a decoding method. In particular, the present disclosure relates to block partitioning and signaling the partitioning parameters in a bitstream. An override flag in a slice header indicates whether or not a block is to be partitioned according to a first partition constraint information. The override flag is included in the bitstream and the block is partitioned accordingly.