Inter Prediction Resolution Adjustment for Video Encoding Efficiency
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current video compression methods face inefficiencies in encoding efficiency due to resolution differences between image frames, leading to increased bit rates and storage costs, as they are limited to intra predictive encoding when resolution varies, which has lower efficiency compared to inter predictive encoding.
Innovation Solution
An image encoding and decoding method that adjusts the resolution of reference image frames to match the target image frame's resolution before performing inter predictive encoding, allowing for efficient inter predictive encoding even when resolution differences exist.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If inter predictive encoding is performed on image frames with different resolutions, then encoding efficiency is improved, but resolution mismatch causes encoding errors
Solution Approach 1:
The patent changes the resolution parameter of the reference image frame to match the current image frame's resolution. This is achieved by selecting a reference frame with compatible resolution or by scaling/transforming the reference frame's resolution to eliminate the resolution mismatch that would otherwise cause encoding errors.
Solution Approach 2:
The patent performs resolution adjustment on the reference image frame before the inter predictive encoding process. This preliminary action ensures that the reference frame and current frame have matching resolutions, preventing encoding errors and enabling efficient inter-frame prediction.
2Reliability
If intra predictive encoding is used when resolution differs, then encoding accuracy is maintained, but encoding efficiency decreases and bit rate increases
Solution Approach 1:
Instead of using intra predictive encoding when resolutions differ, the patent changes the reference frame's resolution parameter to match the current frame. This allows inter predictive encoding to be used, improving encoding efficiency while maintaining accuracy through proper resolution matching.
Solution Approach 2:
The patent introduces an intermediary resolution adjustment process that transforms the reference frame to the appropriate resolution. This intermediary step enables the use of efficient inter predictive encoding by eliminating the resolution barrier that would otherwise force the use of less efficient intra predictive encoding.
3Productivity
If resolution adjustment is performed on reference frames, then inter predictive encoding can be applied to varying resolutions, but processing complexity increases
Solution Approach 1:
The patent changes the resolution parameter of reference frames to match current frames, enabling efficient inter predictive encoding. The complexity is managed by implementing this parameter change through systematic selection and transformation processes that integrate with the existing encoding framework.
Solution Approach 2:
The patent performs resolution adjustment as a preliminary step before inter predictive encoding. By preparing the reference frames in advance with appropriate resolution transformations, the system enables efficient encoding while managing complexity through structured pre-processing.
Data Source
AI summary
When performing an inter predictive encoding on any image frame x is required, a reference image frame is determined for image x; image x is a P-frame image or a B-frame image; for each reference image frame, following processes are respectively performed: whether resolution of a reference image frame is the same as resolution of image x is determined; if resolution of the reference image frame is different from resolution of image x, resolution of reference image frame is adjusted to be the same as resolution of image x; if resolution of each reference image frame is the same as resolution of image x, inter predictive encoding is performed on image x based on each reference image frame.