Sub-picture Parameter Segmentation for Video Compression Efficiency

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Solution Overview

Problem

Existing image encoding/decoding techniques struggle with high compression efficiency, especially for high-resolution and high-quality images, leading to increased transmission and storage costs.

Innovation Solution

The proposed method involves obtaining and decoding sub-picture information at various signaling levels, including sequence parameter sets (SPS), picture parameter sets (PPS), and slice headers, to efficiently encode and decode images.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If high resolution and quality image data is transmitted or stored, then image quality is improved, but transmission cost and storage cost increase

Engineering Contradiction:

Improveimage qualityVSAvoidtransmission cost and storage cost

Core Design Contradiction:

Measurement precisionVSLoss of energy

Solution Approach 1:

The image is divided into multiple sub-pictures, each with its own parameter set. This segmentation allows for selective encoding and transmission of only necessary parameters for each sub-picture, reducing overall data transmission and storage requirements while maintaining high image quality.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different parameter sets (SPS, PPS, slice headers) are applied to different sub-pictures based on their specific characteristics. This allows optimization of encoding parameters for each region, achieving high quality where needed while minimizing data where possible, thus reducing transmission and storage costs.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If sub-picture information is obtained for each decoded sub-picture at multiple signaling levels, then compression efficiency is improved, but device complexity increases

Engineering Contradiction:

Improvecompression efficiencyVSAvoidencoding/decoding complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The picture is segmented into multiple sub-pictures, each with independent parameter sets. This allows the decoder to process and decompress each sub-picture separately using its optimized parameters, improving overall compression efficiency while managing complexity through modular processing.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Parameter sets (SPS, PPS, slice headers) are prepared and organized in advance at different signaling levels before actual decoding. This preliminary organization of sub-picture information allows the decoder to efficiently access and apply the correct parameters without increasing real-time processing complexity.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250175640A1Image encoding/decoding method and device, and recording medium storing bitstream

Publication Date: 2025.05.29 INTELLECTUAL DISCOVERY CO LTD

AI summary

The present invention relates to a video decoding method, the video decoding method according to an embodiment of the present invention comprises, obtaining sub-picture information of a current sub-picture through at least one signaling level and decoding the current sub-picture using the sub-picture information, wherein the sub-picture information is obtained for each decoded sub-picture.