Temporal Resampling Syntax in Video Decoding
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Solution Overview
Problem
Existing video coding and decoding technologies face challenges in efficiently managing temporal resampling and restoration, which affects the quality and efficiency of video streaming and storage.
Innovation Solution
The proposed solution involves a method for decoding a coded video bitstream that includes extracting a syntax indicating a temporal restoration mode. This syntax comprises a flag and an index, where the flag enables or disables temporal restoration, and the index specifies a temporal resampling ratio. When enabled, the method restores reconstructed frames based on the indicated resampling ratio.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If temporal resampling and restoration are implemented in video coding and decoding, then video quality is improved, but system complexity increases
Solution Approach 1:
The patent divides the video processing pipeline into separate encoding and decoding stages, with temporal resampling performed during encoding and temporal restoration performed during decoding. This segmentation allows each stage to be optimized independently, improving video quality while managing system complexity through modular architecture.
Solution Approach 2:
The patent performs temporal resampling as a preliminary action during the encoding stage, before transmission or storage. By pre-processing the video data to reduce temporal redundancy, the system avoids the need for complex real-time processing during decoding, thus improving quality while controlling complexity.
2Productivity
If temporal resampling ratio is increased to compress video data, then storage efficiency is improved, but video quality deteriorates
Solution Approach 1:
The patent introduces temporal resampling ratio as a controllable parameter that can be adjusted according to application requirements. By changing this parameter, the system can optimize the balance between storage efficiency and video quality, allowing high compression ratios for archival storage while maintaining lower ratios for applications requiring higher quality.
Solution Approach 2:
The patent enables dynamic adjustment of the temporal resampling ratio based on content characteristics and application needs. The system can adaptively select different resampling ratios for different video sequences or even different regions within a sequence, optimizing the trade-off between storage efficiency and quality on a per-content basis.
Data Source
AI summary
This disclosure relates generally to video coding/decoding and particularly for signaling in temporal resampling and restoration in video coding and/or decoding systems. One method includes receiving the coded video bitstream; extracting, from the coded video bitstream, a syntax indicating a temporal restoration mode, wherein the syntax comprises: a flag and an index, the flag indicating whether temporal restoration is enabled, the index indicating one temporal resampling ratio out of 2{circumflex over ( )}N non-unity temporal resampling ratios, wherein the index has N bits, or an index only, the index indicating whether the temporal restoration is enabled and one temporal resampling ratio of at least one temporal resampling ratios; and when the temporal restoration is enabled, restoring, by the device, reconstructed frames to obtain restored frames based on the indicated temporal resampling ratio.