Picture Coding With Adaptive Entropy Skip to Prevent Artifacts
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Solution Overview
Problem
Existing end-to-end picture coding processes introduce artifacts due to the skipping of entropy encoding and decoding, which affects the quality of reconstructed pictures.
Innovation Solution
Implement adaptive entropy encoding and decoding methods that determine whether to perform entropy encoding or decoding based on probability estimation results, using flags to indicate processing decisions, thereby avoiding artifacts in reconstructed pictures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If adaptive entropy encoding skip processing is performed on the to-be-encoded region, then encoding efficiency is improved and bit rate overheads are reduced, but artifacts are introduced into the reconstructed picture
Solution Approach 1:
The patent changes the parameter of entropy encoding processing by dynamically adjusting whether to perform full entropy encoding or skip processing based on the probability estimation result. When the probability estimation result indicates high likelihood of no change, the system skips entropy encoding processing to improve efficiency; when the probability is low, full processing is performed to maintain quality, thus resolving the contradiction between efficiency and quality
Solution Approach 2:
The patent introduces dynamic adaptability by making the entropy encoding processing decision variable based on probability estimation. The system transitions from static fixed processing to dynamic conditional processing, where the processing mode (skip or full) is determined in real-time based on the to-be-encoded region's characteristics, allowing optimization of both efficiency and quality according to actual conditions
2Loss of energy
If entropy encoding processing is skipped on the to-be-encoded region, then bit rate overheads are reduced, but artifacts are introduced into the reconstructed picture
Solution Approach 1:
The patent implements feedback mechanism through probability estimation that evaluates the potential impact of skipping entropy encoding processing. The probability estimation result serves as feedback information that guides the decision-making process, allowing the system to skip processing only when confidence is high that no artifacts will be introduced, thus reducing bit rate overheads while maintaining picture quality
Solution Approach 2:
The patent performs preliminary probability estimation before actually skipping the entropy encoding processing. This preliminary action assesses the risk of artifact introduction in advance, allowing the system to make informed decisions about whether to skip processing, thereby reducing unnecessary bit rate overheads while preventing quality degradation
Data Source
AI summary
This application provides encoding and decoding methods, and an electronic device. The encoding method includes: obtaining a to-be-encoded picture; extracting a feature map of the to-be-encoded picture, and determining a probability estimation result of a to-be-encoded region in the feature map; determining, based on an original feature value of the to-be-encoded region and a reconstructed feature value of the to-be-encoded region that is determined after adaptive entropy encoding skip processing is performed on the to-be-encoded region, whether to perform adaptive entropy encoding skip processing on the to-be-encoded region.