Intra Prediction Interpolation Filtering for High-Resolution Video Compression
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Solution Overview
Problem
Existing digital video compression standards face challenges in efficiently reducing bandwidth and traffic pressure due to the increasing demands of high-resolution internet videos, necessitating more advanced compression technologies.
Innovation Solution
An intra prediction method based on interpolation filtering is introduced, which determines a filtering coefficient using a filtering window and reconstructed pixel values to perform pixel-by-pixel prediction on a current block, enhancing encoding and decoding processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional intra prediction methods are used, then encoding simplicity is maintained, but compression efficiency is insufficient for high-resolution videos
Solution Approach 1:
The patent changes the parameters of intra prediction by introducing interpolation filtering with adjustable filtering coefficients and window sizes. Instead of using fixed prediction modes, the system varies filtering parameters (coefficient values, window dimensions) to adapt to different block characteristics, thereby improving compression efficiency while managing complexity through parameter optimization.
Solution Approach 2:
The patent introduces dynamic elements into intra prediction by making the filtering process adaptive. The filtering coefficients and window sizes are dynamically selected based on block characteristics, allowing the prediction method to adjust to different content types and resolutions, thus improving compression efficiency for high-resolution videos without requiring completely new encoding structures.
2Loss of energy
If high-resolution video compression is achieved through advanced methods, then bandwidth requirements are reduced, but computational complexity increases
Solution Approach 1:
The patent enables the encoding system to self-optimize by automatically selecting filtering parameters and modes based on the input video characteristics. The system performs self-adjustment of filtering coefficients and window sizes without requiring external intervention or complex manual configuration, thereby reducing bandwidth consumption for high-resolution videos while keeping computational complexity manageable through automated parameter selection.
3Measurement precision
If interpolation filtering with filtering coefficients is applied, then prediction accuracy is improved, but processing time increases
Solution Approach 1:
The patent applies partial interpolation filtering selectively rather than uniformly across all blocks. By applying filtering only where needed (based on block characteristics) and using adjustable window sizes, the system achieves improved prediction accuracy for critical areas while minimizing processing time for less critical areas, thus balancing accuracy and processing time requirements.
Data Source
AI summary
An intra frame prediction method and apparatus based on interpolation filtering, a video encoding method and apparatus, a video decoding method and apparatus, and a system. The intra prediction method based on interpolation filtering comprises: determining, based on a determined filtering window and a reconstructed value of a sample in a reconstruction area neighboring to a current block, a filtering coefficient used to perform interpolation filtering on the current block; and performing interpolation filtering based on a sample value of a reference sample neighboring to a current sample and the filtering coefficient, to determine a predicted value of the current sample.