Inter-layer Parameter Set for HEVC Scalable Video Coding
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Solution Overview
Problem
Existing digital video compression technologies, such as high efficiency video coding (HEVC), face inefficiencies in bandwidth and processing resource consumption due to inefficient signaling of parameter sets and syntax elements in scalable video coding.
Innovation Solution
Implementing a video coding device that processes video representation format subsets and uses an inter-layer parameter set (IPS) to aggregate high-level syntax elements shared among multiple layers, reducing redundant signaling and improving coding efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If scalable video coding mechanisms are used to encode video at highest resolution with parameter sets, then decoding flexibility for different rate and resolution requirements is improved, but bandwidth and processing resource consumption increases
Solution Approach 1:
The parameter sets are segmented into layer-specific parameter sets (one per layer) and shared parameter sets (common to multiple layers). This segmentation allows each layer to have its own specific parameters while sharing common parameters across layers, reducing redundant signaling and improving decoding flexibility without excessive bandwidth consumption.
Solution Approach 2:
The patent introduces a new dimension in parameter organization by creating a hierarchical structure where parameter sets are organized across multiple layers. This dimensional organization allows efficient referencing and inheritance of parameters from base layers to enhancement layers, reducing overall bandwidth requirements while maintaining adaptability.
2Manufacturing precision
If high level syntax designs via parameter sets are implemented for scalable video coding, then video quality and service experience are improved, but processing resources are inefficiently consumed
Solution Approach 1:
Parameter sets are prepared and organized in advance during encoding, with layer-specific and shared parameter sets pre-configured. This preliminary organization reduces the complexity of parameter handling during decoding, as the decoder can efficiently retrieve and apply pre-organized parameters rather than processing complex syntax elements in real-time.
Solution Approach 2:
The patent employs parameter copying and inheritance mechanisms where enhancement layers can copy and inherit parameters from base layers. This reduces processing complexity by avoiding redundant parameter processing while maintaining high video quality through selective parameter modification where needed.
Data Source
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AI summary
A video coding device may provide video data processing. The video coding device may receive a plurality of video representation format subsets. The plurality of video representation format subsets may correspond to a plurality of layers. Each of the plurality of video representation subsets may include one or more video representation parameter values. The video coding device may receive a video representation format subset index (e.g., in a cross-layer parameter set) associated with a current layer. The video coding device may determine, using the video representation format subset index, one of the plurality of video representation format subsets associated with the current layer.