Unified Luma Chroma Context Mapping for HEVC Significance Map Coding

The patent merges the separate luma and chroma context mappings into a unified mapping structure. Instead of maintaining distinct context tables and branching logic for luma and chroma components, the invention combines them into a single context mapping mechanism, thereby reducing decoder complexity while preserving coding accuracy through the unified approach.

The patent creates a universal context mapping that serves both luma and chroma components simultaneously. The single context mapping structure is designed to handle both color components without requiring separate specialized mappings, eliminating redundant complexity while maintaining the precision needed for accurate significance map coding of both luma and chroma data.

The patent combines multiple separate mapping tables into a single unified mapping table that handles both luma and chroma significance maps. This consolidation eliminates the need for separate table lookups and reduces processing overhead, thereby decreasing decoder runtime while maintaining coding precision through the unified mapping structure.

The patent extracts and eliminates redundant mapping table structures and conditional branching logic that were previously necessary for separate luma and chroma handling. By removing these unnecessary components and retaining only the essential unified mapping, the invention reduces processing time while preserving the precision required for accurate significance map coding.

The patent merges multiple conditional branches for luma and chroma decisions into a single unified context selection process. Instead of evaluating separate conditional logic for each color component, the invention implements a unified branch structure that handles both components simultaneously, thereby reducing computational complexity while maintaining context selection accuracy through the consolidated approach.

The patent creates a universal context selection mechanism that serves both luma and chroma components through a single set of conditional checks. This multi-functional approach eliminates the need for duplicate branching logic, reducing computational complexity while preserving the accuracy of context selection for both color components through the unified universal structure.