Homography transfer from point matches
AssigneeKoninklijke Philips Electronics N.V.
InventorMiroslav Trajković
Life of this patent
Estimating the term…
Abstract
An infinity homography for an image pair within an image sequence is transferred to other image pairs within the image sequence utilizing point matches for the subject image pairs. An image set including the image pair for which the infinity homography is known and a third image are selected. Then intermediate parameters for homography transfer for one image pair overlapping the known infinity homography image pair is computed from the known infinity homography and epipoles and fundamental matrices of the overlapping image pairs, to derive the infinity homography for the selected overlapping image pair. The process may then be repeated until infinity homographies for all image pairs of interest within the image sequence have been derived.
Claims17
A system for transferring a known infinity homography, comprising:
- an image processor processing an image sequence, the image sequence comprising two images to which the known infinity homography applies and an additional image, wherein the image processor:
- selects an image pair from the image sequence, the selected image pair including one of the two images to which the known infinity homography applies and the additional image determines intermediate transfer parameters for a homography for the selected image pair;
- and
- derives an infinity homography for the selected image pair from the known infinity homography.
A system for processing an image sequence, comprising:
- a video system including an input for receiving the image sequence, the image sequence comprising two images to which a known infinity homography applies and an additional image;
- and
- an image processor within the video system processing the image sequence, wherein the image processor:
- selects an image pair from the image sequence, the selected image pair including one of the two images to which the known infinity homography applies and the additional image determines intermediate transfer parameters for a homography for the selected image pair;
- and
- derives an infinity homography for the selected image pair from the known infinity homography.
A method for transferring a known infinity homography for two images within an image sequence to other image pairs within the image sequence, comprising the steps of:
- selecting an image pair from the image sequence, the selected image pair including one of the two images to which the known infinity homography applies and an additional image within the image sequence determining intermediate transfer parameters for a homography for the selected image pair;
- and
- deriving an infinity homography for the selected image pair from the known infinity homography.
Dependencies are inferred from the claim text.