Local constraints for motion matching
AssigneePTS Corporation
InventorsMichial Gunter, David B. Kita, Oliver W. Shih, Carroll Philip Gossett
Life of this patent
Estimating the term…
Abstract
A method and apparatus for estimating the motion of an image region (the “center” region) from a source video frame to a target video frame. The motion estimation is locally constrained in that the estimated motion of the “center region” is affected by the estimated motion of neighboring regions. Advantageously, this may reduce common motion matching problems such as false and ambiguous matches. In one embodiment, the locally-constrained motion estimation may be implemented by biasing an error map of the center region using error maps of the neighboring regions.
Claims23
A method for estimating motion of a first region from an original video frame to a target video frame, the method comprising:
- calculating error map for the first region;
- calculating a plurality of error maps for neighboring regions around the first region;
- biasing the error map for the first region using the error maps for the neighboring regions;
- and
- determining the estimated motion for the first region using the biased error map.
An apparatus for estimating motion of a first region from an original video frame to a target video frame, the apparatus comprising:
- means for calculating error map for the first region;
- means for calculating a plurality of error maps for neighboring regions around the first region;
- means for biasing the error map for the first region using the error maps for the neighboring regions;
- and
- means for determining the estimated motion for the first region using the biased error map.
A method for estimating motion of a first region from an original video frame to a target video frame, the method comprising:
- calculating an unbiased error map for the first region;
- determining an unconstrained estimated motion for the first region using the unbiased error map;
- calculating error values in the vicinity of the unconstrained estimated motion for a plurality of neighboring regions around the first region;
- and
- adjusting the unconstrained estimated motion using the calculated error values to determine a locally-constrained estimated motion for the first region.
Dependencies are inferred from the claim text.