Color Block Prediction Using PDPC for Low-Complexity Video Coding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The complexity of information processing in video coding affects the fluency of video services, particularly in video coding and decoding processes, which impacts the user's viewing experience.
Innovation Solution
Implementing a Position-Dependent Prediction Combination (PDPC) mode for predicting colour components in video data to reduce processing complexity by directly determining the difference between the colour component and the prediction value, rather than refining each prediction value, thereby optimizing video coding and decoding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional video coding methods are used with detailed prediction value refinement, then prediction accuracy is improved, but processing complexity increases
Solution Approach 1:
The patent extracts only the essential difference information between the actual color component and the prediction value, rather than processing and transmitting the entire refined prediction value. By taking out only the residual difference, the system maintains prediction accuracy while significantly reducing processing complexity in both encoding and decoding operations.
2Reliability
If complex intra prediction processing is performed, then video coding performance is improved, but video fluency deteriorates
Solution Approach 1:
The patent extracts only the difference (residual) between the actual color component and the prediction value, rather than performing complex processing on the entire prediction block. This extraction approach maintains coding performance by preserving the essential error information while dramatically reducing processing time, thereby improving video fluency without sacrificing coding efficiency.
Data Source
AI summary
An information processing method and device, an apparatus, and a storage medium. The method includes: for inputted source video data, predicting a colour component of a coding block in the source video data according to a prediction mode to obtain a first prediction block, wherein the prediction mode is preset and is a Position-Dependent Prediction Combination (PDCP) mode; determining a difference between the colour component of the coding block and a prediction value of the first prediction block to obtain a residual block; and signalling the residual block and the prediction mode in a bitstream.