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:
Jan. 16, 2007
Filed:
Feb. 19, 2003
Zhaohui Sun, Rochester, NY (US);
Zhaohui Sun, Rochester, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A method for determining motion vectors from one point in one image frame of a scene to corresponding points in at least two other image frames of the scene, wherein the frames are obtained in a capture process utilizing one or more cameras, wherein the method employs an iterative and hierarchical dense motion estimation that computes the geometry-consistent and appearance-consistent motion fields between three images simultaneously by enforcing both a trilinear constraint and a constant-brightness constraint. This method includes the steps of: providing first, second and third images of a scene under perspective projection with unconstrained motion of the camera, wherein points (x',y′) and (x″,y″) in the second and third frames are projections of the same spatial points (x,y) in the first frame; specifying a system of trifocal tensors and optical flow equations that describe point correspondence across the three images; and applying both a geometric constraint of trilinearity and an appearance constraint of constant brightness, thereby utilizing a trilinear constraint and a constant brightness constraint to obtain the pointwise displacement between the three frames simultaneously.