Geometric Partitioning Video Encoding with Mixed Prediction Modes
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Solution Overview
Problem
Current video encoding and decoding techniques face challenges in achieving high encoding efficiency and image quality due to increasing video size, resolution, and frame rate, particularly with the geometric partitioning mode, which relies solely on inter-prediction methods.
Innovation Solution
The method involves partitioning a current block into two regions and applying either intra-prediction or inter-prediction modes to each region, using a combination of prediction modes based on most probable modes, adjacent block modes, reference pixels, or neighboring regions to generate a prediction block, thereby enhancing prediction accuracy and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If only inter-prediction mode is used in geometric partitioning mode, then the implementation is simple, but the prediction accuracy and encoding efficiency are insufficient
Solution Approach 1:
The patent applies different prediction modes (intra-prediction or inter-prediction) to different regions (first and second regions) of the current block based on local characteristics. This allows each region to use the most suitable prediction mode for its specific content, improving overall prediction accuracy without requiring complex global decision-making
Solution Approach 2:
The patent dynamically selects between intra-prediction and inter-prediction modes for each region based on local image characteristics and content analysis. This dynamic adaptation allows the system to optimize prediction accuracy for each specific region rather than using a fixed prediction mode for the entire block
2Productivity
If various combinations of intra-prediction and inter-prediction modes are used in geometric partitioning mode, then the encoding efficiency improves, but the computational complexity increases
Solution Approach 1:
The patent divides the current block into two regions using geometric partitioning and applies prediction modes independently to each region. This segmentation allows for more efficient encoding by tailoring prediction to local characteristics while maintaining manageable complexity through the structured two-region approach
Solution Approach 2:
The patent changes the prediction mode parameter (intra or inter) for each region based on local image characteristics. This parameter adaptation allows the system to optimize encoding efficiency by selecting the most appropriate prediction mode for each region's content characteristics
3Measurement precision
If the current block is partitioned into two regions with different prediction modes, then the prediction accuracy enhances, but the processing time increases
Solution Approach 1:
The patent applies the more computationally intensive intra-prediction mode only to specific regions where it provides benefit, rather than applying it to the entire block. This partial application reduces overall processing time while maintaining prediction accuracy in regions where it is most needed
Data Source
AI summary
A method for decoding a video includes partitioning a current block into a first region and a second region. The method also includes determining whether the first region utilizes an intra-prediction mode or an inter-prediction mode. The method additionally includes determining whether the second region utilizes the intra-prediction mode or the inter-prediction mode. The method also includes generating intra prediction block for a region that utilizes the intra-prediction mode among the first region and the second region. The method also includes generating inter prediction block for a region that utilizes the inter-prediction mode among the first region and the second region. The method further includes generating a prediction block of the current block, based on prediction block for the first region and prediction block for the second region.