Adaptive Resolution Scaling in Video Decoding
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current video coding standards face challenges in efficiently managing adaptive resolution changes, which can lead to suboptimal compression efficiency and increased computational resources.
Innovation Solution
The method involves determining an adaptive resolution scaling factor and selecting a motion compensation interpolation filter based on this scaling factor, utilizing 16 fractional sample positions and 8 interpolation filter coefficients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If adaptive resolution changes are implemented in video coding, then compression efficiency is improved, but computational resources increase
Solution Approach 1:
The patent changes the resolution parameter adaptively by determining a scaling factor between reference and current pictures. When the scaling factor indicates resolution change, the system adjusts the coding resolution accordingly, improving compression efficiency by matching the actual content complexity rather than using fixed high resolution throughout.
Solution Approach 2:
The patent implements dynamic resolution adjustment based on content analysis. The scaling factor is determined dynamically for each picture or picture group, allowing the system to adapt resolution changes in real-time based on motion complexity and content characteristics, thereby optimizing the balance between compression efficiency and computational load.
2Loss of substance
If adaptive resolution scaling is performed, then bitstream size is reduced, but decoding complexity increases
Solution Approach 1:
The patent performs preliminary determination of the scaling factor before actual decoding. By analyzing the relationship between reference and current pictures in advance and signaling the scaling factor in the bitstream, the decoder can prepare appropriate filtering and interpolation operations, reducing the complexity during actual decoding while maintaining compression efficiency.
Solution Approach 2:
The patent changes decoding parameters adaptively based on the scaling factor. When resolution change is detected, the system adjusts interpolation filter selection and motion compensation parameters accordingly, allowing the decoder to optimize its operation for the specific resolution scenario rather than using maximum complexity operations always.
Data Source
AI summary
A video coding device may be configured to perform video coding according to one or more of the techniques described herein.