Decoder Initialization Signaling for Efficient Image Coding

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Solution Overview

Problem

The increasing demand for high-resolution and high-quality video/images, including immersive media like VR and AR, necessitates a highly efficient video/image compression technology to reduce transmission and storage costs.

Innovation Solution

A method and apparatus for signaling information related to decoder initialization, enabling efficient video/image decoding and encoding through a decoding apparatus and encoding apparatus, respectively.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If high-resolution and high-quality video/images are transmitted using existing wired or wireless wideband lines, then image quality is improved, but transmission costs are increased

Engineering Contradiction:

Improveimage qualityVSAvoidtransmission costs

Core Design Contradiction:

Manufacturing precisionVSLoss of energy

Solution Approach 1:

The patent extracts and transmits only the essential decoder initialization information (syntax elements) needed to reconstruct video data, rather than transmitting complete video frames. This selective extraction of critical information enables high-quality reconstruction while minimizing transmission bandwidth consumption and costs.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent performs preliminary encoding of decoder initialization information at the transmitter side, preparing all necessary syntax elements and parameters in advance. This preliminary action ensures that the receiver can quickly initialize the decoder without requiring transmission of extensive reference data, thereby reducing transmission costs while maintaining image quality.

Inventive Principle:

Principle #10Preliminary action

2Reliability

If complete video data is transmitted to ensure decoding accuracy, then decoding reliability is improved, but transmission time is increased

Engineering Contradiction:

Improvedecoding accuracyVSAvoidtransmission time

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

The patent extracts only the critical syntax elements required for decoder initialization (e.g., profile_idc, tier_idc, parallel_deblocking_filter_enabled_flag) and transmits them separately. This extraction ensures that the most important information for accurate decoding is transmitted first, maintaining decoding reliability while significantly reducing transmission time compared to sending complete video frames.

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The transmitter performs preliminary packaging and transmission of decoder initialization information before actual video data transmission. This preliminary action allows the receiver to prepare the decoder in advance, ensuring accurate decoding of subsequent video data without requiring retransmission of initialization parameters, thereby improving both reliability and efficiency.

Inventive Principle:

Principle #10Preliminary action

3Manufacturing precision

If high-resolution video/images are stored using existing storage media, then image quality is improved, but storage costs are increased

Engineering Contradiction:

Improveimage qualityVSAvoidstorage costs

Core Design Contradiction:

Manufacturing precisionVSLoss of energy

Solution Approach 1:

The patent extracts and stores only the essential decoder initialization information (syntax elements representing video data characteristics) rather than storing complete high-resolution video frames. This extraction enables the system to maintain the ability to reconstruct high-quality video while occupying minimal storage space, effectively reducing storage costs while preserving image quality capability.

Inventive Principle:

Principle #2Taking out (Extraction)

4Adaptability or versatility

If traditional video compression methods are used, then compatibility is improved, but compression efficiency is worsened

Engineering Contradiction:

ImprovecompatibilityVSAvoidcompression efficiency

Core Design Contradiction:

Adaptability or versatilityVSProductivity

Solution Approach 1:

The patent implements a universal transmission scheme that simultaneously serves multiple functions: it transmits decoder initialization information in a format compatible with existing video coding standards (maintaining compatibility) while also enabling highly efficient compression through selective transmission of only essential syntax elements (improving compression efficiency). The approach works across different video coding contexts without requiring complete retransmission of reference data.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS12568238B2Method for image coding based on signaling of information related to decoder initialization

Publication Date: 2026.03.03 LG ELECTRONICS INC

AI summary

An image decoding method performed by a decoding apparatus according to the disclosure of the present document may comprise the steps of: obtaining information related to decoder initialization from a bitstream, initializing a decoder on the basis of the information related to decoder initialization; and performing decoding after initializing the decoder, wherein the information related to decoder initialization includes one or more decoder initialization information sets, and the decoder initialization information set includes level id information and maximum value information of parameters for decoding a bitstream related to the level id information, the value of the level id information specifying a level related to the decoder initialization information set.