LUT Update Rules for Video Coding Efficiency

The patent applies preliminary action by updating motion candidate tables in advance for entire video regions before actual encoding/decoding operations. The method performs region-based LUT updates that prepare motion candidates for multiple blocks ahead of time, allowing the encoder/decoder to retrieve pre-computed candidates during actual conversion operations, thus avoiding repeated computational overhead while maintaining high coding efficiency

The patent segments the video processing into region-based operations where motion candidate tables are updated for specific video regions rather than uniformly for every block. By dividing the video into regions and performing LUT updates at region boundaries or for region groups, the method reduces the frequency of table updates while still providing accurate motion candidates for each block, thereby decreasing processing time without sacrificing coding efficiency

The patent applies local quality by performing LUT updates at the region level rather than uniformly across the entire video stream. Different video regions can have different update frequencies and strategies based on their complexity and motion characteristics. This localized approach maintains high compression performance in regions requiring frequent updates while reducing device complexity in regions where less frequent updates suffice

The patent implements partial action by selectively updating motion candidate tables only for specific video regions that benefit most from frequent updates, rather than uniformly updating all regions. The method identifies regions with high motion activity or complex content and applies LUT updates primarily to those areas, achieving good compression performance while avoiding the excessive computational burden of universal frequent updates