MULTIPLE-CANDIDATE MOTION ESTIMATION WITH ADVANCED SPATIAL FILTERING OF DIFFERENTIAL MOTION VECTORS

摘要

A system and method of performing motion estimation in a video encoder is enclosed. The system and method include calculating one or more candidate motion vectors for each macroblock of a video image to form a list of candidate motion vectors, calculating a second one or more candidate motion vectors using a sub-region of at least one macroblock of the video image to include in the list of candidate motion vectors, and comparing the calculated candidate motion vectors of a first macroblock with the calculated candidate motion vectors of at least one sub-region of the first macroblock to provide the estimated contribution to the candidate motion vector of the macroblock. The calculating a second one or more candidate motion vectors using a sub-region of at least one macroblock may include using an approximation different from the calculating one or more candidate motion vectors for each macroblock.

主权项

1. A method of performing motion estimation with respect to images in video frames comprising:
computing in parallel for each macroblock of an image in a video frame using parallel compute engines: calculating candidate motion vectors and determining a similarity for each candidate motion vector; comparing each candidate motion vector with each neighbor candidate motion vector; iteratively scoring each candidate motion vector to determine a motion vector based on highest score; and performing spatial filtering to fine tune determined motion vectors on a condition that differentials exist between the determined best motion vectors.