HEVC Non-IDR Parameter Grouping in Slice Header
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Solution Overview
Problem
Current video coding standards, such as HEVC, face inefficiencies in processing and encoding non-IDR picture parameters, leading to increased complexity and bitrate due to scattered syntax elements in the bitstream.
Innovation Solution
A method and system where non-IDR picture parameters are encoded or decoded consecutively without additional bits or syntax, using a single conditional statement to determine if a picture is non-IDR, grouping all parameters under a single flag, and locating the flag in the slice header for streamlined processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If non-IDR parameters are encoded with scattered syntax elements in the bitstream, then flexibility in parameter configuration is maintained, but encoding complexity and bitrate increase
Solution Approach 1:
The patent merges all non-IDR picture parameters into a single contiguous syntax structure within the slice header, eliminating scattered syntax elements. This consolidation reduces the number of separate encoding operations and simplifies the bitstream structure while maintaining all necessary parameter configuration capabilities.
Solution Approach 2:
The patent segments the encoding process into two distinct paths: one for IDR pictures and another for non-IDR pictures. This segmentation allows the use of a single conditional statement to determine the encoding path, simplifying the overall encoding logic while maintaining flexibility in parameter configuration through the non-IDR specific syntax structure.
2Adaptability or versatility
If non-IDR parameters are encoded with scattered syntax elements, then parameter flexibility is maintained, but decoding complexity and processing time increase
Solution Approach 1:
The patent combines all non-IDR parameters into a contiguous syntax block, allowing the decoder to process these parameters sequentially without interruption. This merging eliminates the need to search through scattered syntax elements, significantly improving decoding efficiency while preserving parameter configuration flexibility.
Solution Approach 2:
The patent uses a single conditional statement to preliminarily determine whether the current picture is an IDR or non-IDR picture before initiating the decoding process. This preliminary classification guides the decoder to the appropriate syntax structure, enabling efficient parameter decoding without requiring complex runtime analysis during the actual decoding operation.
3Reliability
If multiple conditional statements are used to determine picture type, then accurate picture classification is achieved, but encoding and decoding complexity increases
Solution Approach 1:
The patent divides the picture classification logic into a single clear conditional statement that distinguishes between IDR and non-IDR pictures. This segmentation of the decision logic, combined with the corresponding syntax structure segmentation, achieves reliable picture classification with minimal control logic complexity.
Data Source
Figure 1A
Figure 1B
Figure 2A~2B
AI summary
Syntax cleanup methods and systems for High Efficiency Video Coding are disclosed.