Temporal Merging Candidate Reference Index Setting
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Solution Overview
Problem
Existing image processing methods face challenges in efficiently setting the reference picture index of a temporal merging candidate, particularly when other blocks have not been decoded, leading to increased complexity and reduced processing speed.
Innovation Solution
An inter-frame prediction method that determines the reference picture index of a temporal merging candidate independently of other blocks' decoding status, allowing for parallel derivation of temporal merging candidates in units of coding blocks or current blocks, and sets the reference picture index to a fixed value for efficient processing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the reference picture index of a temporal merging candidate is determined based on other blocks' decoding status, then the prediction accuracy may be improved, but the processing complexity increases and processing speed decreases
Solution Approach 1:
The patent divides the prediction process into independent units (coding blocks or current blocks), allowing each unit to derive its temporal merging candidate independently. This segmentation enables parallel processing of multiple blocks without requiring sequential decoding of all other blocks, thereby reducing processing complexity while maintaining prediction accuracy through independent candidate derivation.
Solution Approach 2:
The patent sets the reference picture index of the temporal merging candidate to a fixed value in advance, before actual decoding occurs. This preliminary action eliminates the need to wait for other blocks to be decoded, allowing the temporal merging candidate to be derived independently and in parallel, thus reducing processing complexity and improving speed while maintaining sufficient prediction accuracy.
2Reliability
If the reference picture index of a temporal merging candidate is determined based on other blocks' decoding status, then the prediction accuracy may be improved, but the processing speed decreases
Solution Approach 1:
The patent segments the prediction process into independent coding block units, enabling parallel derivation of temporal merging candidates across multiple blocks. This parallel processing capability significantly improves processing speed by eliminating sequential dependencies, while the fixed reference picture index ensures consistent and accurate prediction results.
Solution Approach 2:
By pre-setting the reference picture index to a fixed value, the patent enables the temporal merging candidate to be derived immediately without waiting for other blocks to be decoded. This preliminary action removes processing bottlenecks and enables parallel execution, thereby improving processing speed while maintaining prediction accuracy.
3Productivity
If parallel derivation of temporal merging candidates is enabled, then the processing speed improves, but the reference picture index must be set independently of other blocks' decoding status
Solution Approach 1:
The patent divides the video stream into independent coding blocks that can be processed in parallel. Each block derives its temporal merging candidate independently using the same fixed reference picture index, eliminating inter-block dependencies and enabling parallel processing without increasing overall system complexity.
Solution Approach 2:
The patent applies a universal fixed reference picture index value across all coding blocks and temporal merging candidates. This universal approach simplifies the parallel processing mechanism by providing a consistent, block-independent method for setting reference picture indices, thereby enabling parallel derivation without requiring complex block-specific logic.
Data Source
AI summary
The present invention relates to a method and apparatus for setting a reference picture index of a temporal merging candidate. An inter-picture prediction method using a temporal merging candidate can include the steps of determining a reference picture index for a current block; and inducing a temporal merging candidate block of the current block and calculating a temporal merging candidate from the temporal merging candidate block, wherein the reference picture index of the temporal merging candidate can be calculated regardless of whether a block other than the current block is decoded. Accordingly, a video processing speed can be increased and video processing complexity can be reduced.