Video Macroblock Partitioning Basis Set Optimization
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Solution Overview
Problem
Video encoding using standards like MPEG-4 AVC/H.264 requires substantial computation to efficiently encode various combinations of modes and smaller units within a video frame, necessitating a more efficient approach to find an optimal encoding solution without encoding all possible combinations.
Innovation Solution
The implementation of a basis set of partition blocks and associated parameter values allows for the efficient calculation and construction of the best partitioned macroblock, reducing computational complexity by selecting from a limited set of permissible partitions rather than computing all possible ways of partitioning the data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If all combinations of modes and smaller units of a video frame are encoded to find an efficient solution, then encoding quality and compression efficiency are improved, but computation time and complexity increase substantially
Solution Approach 1:
The patent segments the video frame into macroblocks and further divides them into smaller units (e.g., 16x16, 8x8, 4x4 blocks). By organizing the encoding process around these segmented units and using hierarchical structure, the patent enables efficient evaluation of different partitioning modes without exhaustively testing all possible combinations, thus reducing computation time while maintaining encoding quality.
Solution Approach 2:
The patent performs preliminary actions by pre-defining a set of permissible partitioning modes and smaller units before the actual encoding process. This preliminary structuring allows the encoder to systematically evaluate only the predefined modes rather than all possible combinations, significantly reducing computation time while still achieving optimal compression through efficient mode selection.
2Productivity
If all combinations of modes and smaller units of a video frame are encoded to find an efficient solution, then compression efficiency is improved, but computational complexity increases substantially
Solution Approach 1:
The patent segments the encoding process into distinct stages: macroblock partitioning, mode selection, and transformation. By defining a hierarchical structure with predefined partitioning modes (16x16, 8x8, 4x4 blocks) and evaluating only these segmented options, the patent reduces computational complexity while maintaining compression efficiency through systematic evaluation of partitioning choices.
Solution Approach 2:
The patent performs preliminary action by pre-establishing a finite set of permissible partitioning modes and smaller units before encoding. This preliminary definition constrains the search space to manageable options, reducing computational complexity while still enabling efficient compression through optimal selection from the predefined modes based on rate-distortion criteria.
3Loss of time
If a limited set of permissible partitions is selected from a basis set, then computational resources and time are reduced, but encoding flexibility may be limited
Solution Approach 1:
The patent segments the video frame into macroblocks and defines a basis set of standard partitioning modes (16x16, 8x8, 4x4 blocks). This segmentation provides a flexible framework that can adapt to different content types while maintaining a limited set of permissible partitions, thus reducing encoding time without significantly compromising encoding flexibility for most practical applications.
Data Source
AI summary
A method of encoding video data comprises calculating a set of parameter values for a basis set of partition blocks of a macroblock of the video data. The basis set comprising one or more partition blocks into which the macroblock could validly be partitioned under an encoding scheme, wherein the basis set of partition blocks is smaller in number than the number of ways into which a macroblock is partitionable for encoding. The method further comprises constructing a desired partitioned macroblock using one or more partition blocks selected from the basis set based at least in part on the set of parameter values.