METHOD, APPARATUS, AND COMPUTER PROGRAM PRODUCT FOR PROVIDING MOTION ESTIMATOR FOR VIDEO ENCODING

摘要

An apparatus for providing motion estimation for video encoding includes a selection element and a processing element. The selection element is configured to select a subset including less than all of candidate pixel locations from among a plurality of candidate pixel locations used for motion vector determination based on a relationship between a best candidate pixel location of a first level of accuracy and a best candidate pixel location of a second level of accuracy. The processing element is configured to process an input video sequence to determine a motion vector at the first level of accuracy, to refine the motion vector at the second level of accuracy, and to determine the motion vector at a third level of accuracy using only the subset of candidate pixel locations.

主权项

1. A method comprising:
processing an input video sequence to determine a motion vector at a first level of accuracy; refining the motion vector at a second level of accuracy; selecting, with a selection element, a subset including less than all of candidate pixel locations at least partially based on whether a best candidate pixel location of the second level of accuracy is the same as a best candidate pixel location of the first level of accuracy; and determining the motion vector at a third level of accuracy based on the subset of candidate pixel locations, wherein when the best candidate pixel location of the second level of accuracy is not the same as the best candidate pixel location of the first level of accuracy, selecting the subset of candidate pixel locations comprises selecting candidate pixel locations proximate to the best candidate pixel locations of the second level of accuracy that are between the best candidate pixel location of the second level of accuracy and the best candidate pixel location of the first level of accuracy.