Chroma Intra Mode Configuration Using Default Direct Mode
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Solution Overview
Problem
Existing video compression techniques struggle with inefficient encoding and decoding processes, particularly in handling chroma blocks, leading to suboptimal compression performance and increased hardware resource requirements.
Innovation Solution
A method is introduced to configure candidate intra modes for chroma blocks by determining the availability of encoding modes for corresponding luma regions and setting a direct mode as the default when luma region modes are unavailable, utilizing a determination unit, setting unit, and configuration unit to enhance the encoding and decoding process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If existing video compression techniques (H.264/AVC, HEVC) are used, then video data can be compressed and transmitted, but the data volume remains large requiring significant hardware resources for storage and transmission
Solution Approach 1:
The patent changes the parameter of intra mode candidate configuration for chroma blocks by introducing a new default mode selection mechanism. When luma region encoding mode is unavailable, the patent sets specific default modes (intra_dc_mode or intra_planar_mode) for chroma blocks, thereby optimizing compression efficiency without requiring additional hardware resources.
2Productivity
If more hardware resources are allocated for video processing, then encoding and decoding can be performed, but the system becomes more complex and resource-intensive
Solution Approach 1:
The patent enables the chroma block encoding to self-adapt by automatically selecting default modes based on the availability of luma region encoding modes. The system uses local information (luma mode availability) to make encoding decisions without requiring external control or additional hardware resources, thereby improving productivity while maintaining simple device architecture.
3Loss of energy
If chroma blocks use standard intra prediction modes, then encoding is straightforward, but compression performance is suboptimal
Solution Approach 1:
The patent modifies the encoding process by dynamically changing the default mode parameter for chroma blocks based on luma region availability. When luma mode is unavailable, the system switches to alternative default modes (intra_dc_mode or intra_planar_mode), improving compression performance while maintaining encoding process simplicity through automated parameter adjustment.
Data Source
AI summary
A method of configuring candidate intra modes and a video decoding apparatus are disclosed. At least one embodiment of the present disclosure provides a method of configuring candidate intra modes for a chroma block, including determining whether a luma region corresponding to the chroma block has an encoding mode that is available for use, setting a direct mode (DM) among the candidate intra modes as a default mode when the encoding mode of the luma region is not available, and configuring the candidate intra modes by including the DM.