The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 1993
Filed:
Dec. 20, 1990
Sergei V Fogel, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
Changes in successive images from a time-varying image sequence of a scene are characterized by velocity vector fields. As estimate of the velocity vector field is determined as a compromise in the attempt to satisfy the following two sets of constraints in addition to a regularization constraint: the optical flow constraints which relate to the values of the time-varying images function at corresponding points of the successive image of the sequence, and the directional smoothness constraints, which relate the values of the neighboring velocity vectors. To achieve such a compromise, a system of nonlinear equations of the unknown estimate of the velocity vector field is used. A stable iterative method is used to solve this system. The optical flow and smoothness constraints are selectively suppressed in the neighborhoods of the occlusion boundaries. The last is accomplished by attaching a weight to each constraint. The spatial variations in the values of the time-varying image function near corresponding points of the successive images of the sequence, with the correspondence specified by a current estimate of the velocity vector field, and variation in the current estimate of the velocity vectors themselves are implicitly used to adjust the weighting function.