Video Signal Tile and Slice Partitioning for Encoding Efficiency

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing video compression technologies, such as HEVC, are facing limitations in efficiently encoding and decoding high-definition video signals due to increased data amounts, necessitating improved methods for partitioning video signals into tiles or slices.

Innovation Solution

A method for partitioning a picture into tiles or slices based on a tile index or difference information with previous slices, allowing for efficient encoding and decoding by determining the number of slices and defining them using tiles, with specific parsing rules for different slice configurations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Quantity of substance

If video compression standards like HEVC are used to handle high-definition video signals, then compression performance is improved, but data amount increases greatly making the standard show limitations

Engineering Contradiction:

Improvedata amountVSAvoidcompression performance

Core Design Contradiction:

Quantity of substanceVSProductivity

Solution Approach 1:

The picture is divided into multiple tiles, and each tile is further divided into multiple slices. This hierarchical segmentation allows parallel processing of different slices while maintaining compression efficiency, resolving the contradiction between handling large data amounts and maintaining compression performance.

Inventive Principle:

Principle #1Segmentation

2Productivity

If a picture is partitioned into multiple tiles and slices, then encoding and decoding efficiency is improved, but the complexity of partitioning logic increases

Engineering Contradiction:

Improveencoding efficiencyVSAvoidpartitioning logic complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The partitioning structure of tiles and slices is predetermined and established before encoding/decoding operations. This preliminary organization allows efficient parallel processing without requiring complex runtime decision logic, thus improving encoding efficiency while controlling complexity.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The slice partitioning within tiles can be dynamically adjusted based on picture characteristics. The number of slices per tile and their dimensions can vary adaptively, allowing the system to optimize for different content types while maintaining a manageable partitioning framework.

Inventive Principle:

Principle #15Dynamics

3Measurement precision

If difference information is encoded for slice partitioning, then precision of slice definition is improved, but the amount of additional information to be encoded increases

Engineering Contradiction:

Improveslice definition precisionVSAvoidencoded information amount

Core Design Contradiction:

Measurement precisionVSQuantity of substance

Solution Approach 1:

Instead of encoding absolute slice position information, the system encodes difference information (offsets) relative to reference points. This parameter transformation reduces the amount of information needed while maintaining precise slice definition, as differences are typically smaller values that require fewer bits to represent.

Inventive Principle:

Principle #35Parameter changes

Data Source

PatentUS20250175601A1Image signal encoding/decoding method and apparatus therefor

Publication Date: 2025.05.29 APPLE INC

AI summary

An image signal decoding method according to an embodiment of the present disclosure comprises the steps of: partitioning the current picture into a plurality of tiles; decoding partition information indicating a slice type, the partition information indicating whether a rectangular slice is to be applied; determining the number of slices in the current picture; and defining the slices using the tiles.