lecture13 - CAP5415 Computer Vision Spring 2003 Khurram...

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Unformatted text preview: CAP5415 Computer Vision Spring 2003 Khurram Hassan-Shafique Deformable Contours Deformable Contours Deformable Contours & Minimize the Energy Functional & Where the integral is taken along the contour c and each of the energy terms in the functional is a function of c or the derivatives of c with respect to s. The parameters , , and control the relative influence of the corresponding energy term, and can vary along c . ( 29 ( 29 ( 29 [ ] ds E s E s E s E image curv cont & + + = Deformable Contours & Continuity 2 ds d E cont c = 2 1-- = i i cont p p E Discrete Approximation ( 29 2 1--- = i i cont p p d E A better form Deformable Contours & Curvature (Smoothness) 2 2 2 ds d E curv c = 2 1 1 2 +- +- = i i i cont p p p E Discrete Approximation Deformable Contours & Image (Edge Attraction) I E curv - = Greedy Algorithm (Williams & Shah) Let I be the intensity image and p 1 , p k be the initial positions of the snake points....
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lecture13 - CAP5415 Computer Vision Spring 2003 Khurram...

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