Inter Prediction Mode Selection for BIO and OBMC Processing

The patent implements dynamic selection between different prediction modes (BIO-only, OBMC-only, or neither) based on block characteristics and motion complexity. The encoder adaptively determines whether to apply BIO, OBMC, or both techniques for each block, allowing the system to optimize processing time while maintaining prediction accuracy where needed. This dynamic approach resolves the contradiction by making the prediction process flexible rather than uniformly applying both techniques to all blocks.

The patent applies different prediction techniques to different blocks based on local characteristics. Blocks with high motion complexity or specific gradient patterns receive BIO or OBMC treatment, while simpler blocks use standard motion compensation. This localized application of advanced techniques maintains overall prediction accuracy while significantly reducing processing time compared to applying both BIO and OBMC to all blocks.

The decoder implements dynamic mode selection based on received syntax elements, enabling it to reconstruct prediction images using only the techniques indicated in the bitstream. This avoids the need to implement both BIO and OBMC circuits simultaneously, reducing overall circuit complexity while maintaining the ability to achieve high prediction accuracy when needed.

The patent extracts and implements only the necessary prediction techniques for each block based on encoder decisions. The decoder circuit is designed to handle BIO and OBMC separately and selectively, rather than requiring both to be active simultaneously for all blocks. This extraction approach reduces circuit size by eliminating redundant computational paths.