Reference Picture Set Signaling Overhead Reduction
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Solution Overview
Problem
Existing electronic devices face significant signal overhead due to the inefficient signaling of reference picture sets (RPS) in video coding, particularly in systems like HEVC, which results in unnecessary bit transmission and increased processing workload.
Innovation Solution
The proposed method reduces RPS signal overhead by generating partial RPS templates at the decoder side based on a received full RPS, utilizing symmetry characteristics to code positive RPS index values, and allowing frequent RPS templates to be signaled with a simple index, thereby reducing the number of bits required for RPS index values and eliminating unnecessary reference pictures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If full RPS templates are signaled in the bitstream, then decoding accuracy is improved, but signal overhead increases
Solution Approach 1:
The patent segments the full RPS template into two parts: a common portion that is signaled once and reused, and a differential portion that contains only the changes. This segmentation allows the decoder to reconstruct the full RPS template accurately while transmitting significantly fewer bits, resolving the contradiction between decoding accuracy and signal overhead.
Solution Approach 2:
The patent performs preliminary action by signaling the full RPS template once at the beginning, then subsequent references only require signaling the differences from the previous template. This preliminary establishment of the complete template enables efficient incremental updates, reducing overhead while maintaining decoding accuracy.
2Productivity
If RPS templates are frequently updated, then video coding efficiency is improved, but processing workload increases
Solution Approach 1:
The patent extracts only the changed portions from the full RPS template and transmits only these differential updates. This extraction approach allows frequent template updates for coding efficiency while minimizing processing workload by avoiding redundant transmission and processing of unchanged data.
3Measurement precision
If RPS index values are coded with full precision, then reference picture identification accuracy is improved, but bit transmission increases
Solution Approach 1:
The patent applies partial action by coding only the necessary portion of RPS index values - specifically, only the changes from the previous template are coded with full precision, while the common unchanged portions are handled through differential coding. This reduces bit transmission while maintaining identification accuracy for the actual changes.
Data Source
AI summary
A method for reducing signal overhead on an electronic device is described. The method includes obtaining a picture. The method also includes encoding the picture. The method further includes indicating a reference picture set (RPS) corresponding to the picture based on an initialized index value. The method additionally includes sending a bitstream.