Video Block Geometric Transformation for Reference Alignment
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Solution Overview
Problem
Existing video coding technologies face challenges in improving coding efficiency and quality, particularly in handling geometric transformations of video blocks and reference blocks.
Innovation Solution
A method is proposed that determines whether to apply a geometric transformation on a second video unit based on information about a first video unit, adjusting the reference video block accordingly to enhance coding efficiency and quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a geometric transformation is applied to a current video block, then the coding quality and efficiency are improved, but the reference video block may become misaligned with the transformed block
Solution Approach 1:
The patent applies preliminary action by adjusting the reference video block before it is needed for prediction. The reference block is transformed in advance based on the geometric transformation parameters of the current block, ensuring that when the current block is processed, the reference block is already in the correct position and orientation for accurate prediction, thereby maintaining coding quality without misalignment
Solution Approach 2:
The patent implements dynamics by making the reference block adjustment flexible and adaptive. Instead of using a fixed reference block, the system dynamically adjusts the reference block's position and transformation parameters based on the specific geometric transformation applied to the current block, allowing the system to adapt to different transformation scenarios and maintain optimal alignment
2Productivity
If the reference video block is adjusted according to geometric transformation, then coding efficiency is improved, but the processing complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying the transformation parameters of the reference block based on the current block's geometric transformation. Instead of using fixed transformation parameters, the system calculates and applies adjusted parameters that account for the relationship between the current block and reference block, enabling efficient coding while managing processing complexity through parameter-based control
Solution Approach 2:
The patent uses copying by creating an adjusted reference block that copies the structure and characteristics of the original reference block but with modified transformation parameters. This allows the system to reuse the reference block structure while adapting it to the current transformation, reducing the need for complete reprocessing and lowering overall complexity
Data Source
AI summary
Embodiments of the present disclosure provide a solution for video processing. A method for video processing is proposed. The method comprises: obtaining, for a conversion between a current video block of a video and a bitstream of the video, information regarding applying a geometric transformation on a first video unit comprising the current video block; determining, based on the information, whether to apply a geometric transformation on a second video unit comprising a reference video block of the current video block; and performing the conversion based on the determining.