Transform Picture Reference Skipping for Efficient Inter Prediction
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Solution Overview
Problem
Existing image encoding/decoding technologies face challenges in efficiently managing transform pictures, leading to increased complexity and reduced compression efficiency due to unnecessary reference to transform pictures.
Innovation Solution
A method and apparatus that determine whether to reference a transform picture based on a transform picture reference skip flag, allowing for selective use of transform information to enhance compression efficiency and reduce complexity by omitting unnecessary transform picture generation processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If transform picture generation is performed to enhance compression efficiency, then compression efficiency is improved, but device complexity and computational overhead increase
Solution Approach 1:
The patent applies dynamics by making the transform picture generation process adjustable rather than fixed. The encoder/decoder can dynamically determine whether to generate and use transform pictures based on picture type, motion characteristics, and other conditions. This allows the system to adapt between high compression efficiency mode (when transform pictures are generated) and low complexity mode (when they are omitted), resolving the contradiction between compression efficiency and device complexity.
Solution Approach 2:
The patent changes parameters related to transform picture generation by introducing flags and conditions that control whether transform pictures are created. By modifying the generation parameters based on picture characteristics (e.g., skip mode, motion vectors, picture type), the system can optimize between compression efficiency and complexity for different scenarios, rather than always generating transform pictures.
2Productivity
If transform picture generation is performed to improve compression efficiency, then compression efficiency is improved, but bandwidth requirements increase
Solution Approach 1:
The patent applies partial action by selectively generating transform pictures only when beneficial, rather than always generating them. Through conditions such as skip mode flags, motion vector analysis, and picture type checks, the system performs transform picture generation only partially - specifically for regions or pictures where it will actually improve compression efficiency without unnecessarily increasing bandwidth requirements.
3Productivity
If transform picture reference is used to enhance compression efficiency, then compression efficiency is improved, but computational overhead increases
Solution Approach 1:
The patent segments the picture processing into different paths based on transform picture usage. By dividing the encoding/decoding process into segments that either use transform pictures or use conventional methods, the system can apply computational resources selectively. This segmentation allows high compression efficiency where transform pictures are used while maintaining low computational overhead where they are omitted, based on conditions like motion characteristics and picture type.
Data Source
AI summary
There is provided a method of decoding/encoding an image. The method of the present invention includes receiving a transform picture reference skip flag; determining whether the transform picture reference skip flag is on or off; and performing inter prediction on a current block on the basis of the transform picture reference skip flag.