Adaptive Interpolation Filter for Video Encoding Precision

The patent applies different interpolation filter types and resolutions to different video blocks based on their characteristics. For blocks where high motion precision is critical, higher resolution motion vectors and more complex filters are used, while for blocks with simpler motion characteristics, lower resolution is sufficient. This local adaptation resolves the contradiction by optimizing the balance between prediction accuracy and bit cost for each block individually rather than uniformly across the entire video.

The patent dynamically changes the interpolation filter parameters (filter type, filter resolution, tap length) based on video content characteristics and motion complexity. By adjusting these parameters adaptively, the system achieves high prediction accuracy when needed while reducing computational complexity and bit cost when high precision is not required, thus resolving the contradiction between accuracy and bit cost.

The patent introduces dynamic adaptability into the motion vector resolution system. Instead of using a fixed resolution for all blocks, the system dynamically selects the appropriate motion vector resolution and interpolation filter based on the characteristics of each video block. This dynamic approach maintains encoding simplicity through automated selection while achieving high compression efficiency by optimizing each block individually.

The patent segments the video into different blocks and applies different motion vector resolutions and interpolation filters to each block based on its characteristics. This segmentation allows the system to maintain simplicity at the macro level (through standardized processing of each block type) while achieving efficiency at the micro level (through optimized processing for each block's specific needs).