Image analysis – Pattern recognition – Feature extraction
Reexamination Certificate
2005-06-28
2005-06-28
Dastouri, Mehrdad (Department: 2623)
Image analysis
Pattern recognition
Feature extraction
C382S203000, C382S279000
Reexamination Certificate
active
06912310
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.
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Kim Yongmin
Park Hyun-Wook
Schoepflin Todd
Sun Shijun
Dastouri Mehrdad
Koda Steven P.
University of Washington
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