Method for computing optical flow under the epipolar constraint
AssigneeKoninklijke Philips Electronics N.V.
InventorMiroslav Trajković
Life of this patent
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Abstract
Point matches between images within an image sequence are identified by sparse optical flow computation and employed to compute a fundamental matrix for the epipolar geometry, which in turn is employed to derive an epipolar geometry constraint for computing dense optical flow for the image sequence. The epipolar geometry constraint may further be combined with local, heuristic constraints or robust statistical methods. Improvements in both accuracy and performance in computing optical flow are achieved utilizing the epipolar geometry constraint.
Claims23
A system for computing optical flow between images within an image sequence comprising:
- an image processor processing the image sequence, wherein the image processor:
- derives epipolar geometry for the images from point matches between the images;
- and
- computes optical flow for each pixel within at least one of the images under a constraint derived from the epipolar geometry by computing a component of the optical flow using a median.
A system for computing optical flow between images within an image sequence comprising:
- a video receiver including an input for receiving the image sequence;
- an image processor within the video system processing the image sequence, wherein the image processor:
- derives epipolar geometry forte images from point matches between the images;
- and
- computes optical flow for each pixel within at least one of the images under a constraint derived from the epipolar geometry by computing a component of the optical disc flow using a median.
A method for computing optical flow between images within an image sequence comprising:
- deriving epipolar geometry for the images from point matches between the images;
- and
- computing optical flow for each pixel within at least one of the images under a constraint derived from the epipolar geometry by computing a component of the optical flow using a median.
Dependencies are inferred from the claim text.