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:
Feb. 20, 2001
Filed:
Apr. 03, 1998
Applicant:
Inventor:
Philip R. Moorby, Boxford, MA (US);
Assignee:
Synapix, Inc., Lowell, MA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06K 9/00 ; G06K 9/46 ; H04N 5/225 ; H04N 7/12 ;
U.S. Cl.
CPC ...
G06K 9/00 ; G06K 9/46 ; H04N 5/225 ; H04N 7/12 ;
Abstract
A method for feature tracking across a plurality of related image frames by developing a dense array of features and their paths as a deformable, regularly spaced grid, with vectors for each nodal feature point in the grid being derived through a process related to optical flow. The resulting dense feature array can be applied to techniques such as tracking two-dimensional shapes across frames, estimating three-dimensional paths of selected feature points, estimating three-dimensional camera paths from multiple feature points, or recovering estimated three-dimensional scene structure (including estimated depths of object surfaces) from feature tracking data.