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:
Jun. 28, 2005
Filed:
Aug. 28, 2000
Hyunwook Park, Taejon, KR;
Todd Schoepflin, Seattle, WA (US);
Shijun Sun, Seattle, WA (US);
Yongmin Kim, Seattle, WA (US);
HyunWook Park, Taejon, KR;
Todd Schoepflin, Seattle, WA (US);
Shijun Sun, Seattle, WA (US);
Yongmin Kim, Seattle, WA (US);
University of Washington, Seattle, WA (US);
Abstract
Object segmentation and tracking are improved by including directional information to guide the placement of an active contour (i.e., the elastic curve or 'snake') in estimating the object boundary. In estimating an object boundary the active contour deforms from an initial shape to adjust to image features using an energy minimizing function. The function is guided by external constraint forces and image forces to achieve a minimal total energy of the active contour. Both gradient strength and gradient direction of the image are analyzed in minimizing contour energy for an active contour model.