Intra Prediction Reference Line Derivation for Video Coding Efficiency

The patent segments the current block into multiple sub-blocks and processes each sub-block independently with different intra prediction modes. This segmentation allows for more precise local prediction, improving video quality while managing data volume through targeted processing rather than uniform processing of the entire block.

The patent dynamically selects different intra prediction modes (MIP, DC, Planar, Angular) for different sub-blocks based on local characteristics. This dynamic adaptation allows the encoding process to optimize for each region's specific features, improving overall video quality efficiency while managing data requirements.

The patent applies different reference sample line derivation methods to different sub-blocks based on their local characteristics. Instead of using a complex uniform method across the entire block, it selects appropriate derivation approaches for each region, improving coding efficiency while managing complexity through localized processing.

The patent applies reference sample line derivation selectively to specific sub-blocks that benefit most from it, rather than uniformly to all blocks. This partial application approach improves coding efficiency for critical regions while avoiding unnecessary complexity in regions where simpler methods suffice.