Video Decoder Tile Slice Header Optimization

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Solution Overview

Problem

Existing video coding technologies face challenges in efficiently processing and decoding large amounts of digital video data, particularly in optimizing encoding and decoding processes to reduce bitstream coding amounts.

Innovation Solution

A decoder is configured to split a current picture into tiles, generate a rectangular slice at the lower-right corner of the picture, and exclude specific information from the header to reduce coding amounts, allowing for efficient decoding even when part of the slice setting information is excluded.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If complete slice setting information is included in the bitstream, then decoding accuracy is improved, but coding amount increases

Engineering Contradiction:

Improvedecoding accuracyVSAvoidcoding amount

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

The patent extracts and excludes specific redundant information from the slice header. The lower-right corner slice's region information is omitted from the bitstream since it can be inferred by the decoder through picture dimension parameters and slice arrangement rules, thereby reducing coding amount while maintaining decoding accuracy

Inventive Principle:

Principle #2Taking out (Extraction)

Solution Approach 2:

The patent establishes universal inference rules that allow the decoder to derive slice region information from general picture parameters. By defining that the lower-right corner slice position can be determined through standard picture dimension calculations, the system makes the header information redundant-free while preserving complete decoding capability

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Reliability

If all slice information is decoded sequentially, then decoding completeness is ensured, but processing efficiency decreases

Engineering Contradiction:

Improvedecoding completenessVSAvoidprocessing efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The patent divides the picture into multiple independent slices, where each slice can be decoded separately. The lower-right corner slice is treated as an independent unit whose region can be inferred without requiring sequential processing of other slices, enabling parallel decoding operations that improve processing efficiency while maintaining completeness

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent enables the decoder to pre-determine the region of the lower-right corner slice using picture dimension parameters before actual slice decoding begins. This preliminary inference of slice boundaries allows for optimized memory allocation and parallel processing initialization, improving overall decoding efficiency

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250039421A1Decoder and decoding method

Publication Date: 2025.01.30 PANASONIC INTELLECTUAL PROPERTY CORP OF AMERICA

AI summary

According to one aspect of the present disclosure, a decoder includes memory and a processor coupled to the memory. The processor is configured to split a current picture into tiles, generate a slice having a rectangular shape and located at a lower-right corner of the current picture, the slice including at least a part of a tile among the tiles, generate first information on a region of the slice with header information, the header information not including information identical to the first information, and decode the slice with the first information.