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Unformatted text preview: strongest) • We looked at 2D version in homework/project • But only for rectangular regions 12/1/2011 3 Level Sets Method • Reviewed some basic differential geometry (tangent, normal, and curvature of curves in 2D) • Explicit representation using parametric equations (or vector-valued functions) • Implicit representation using the 0-level set of a surface (in a higher dimensional space) Curve Evolution • We used curve evolution for active contours method in image segmentation • Gave an alternative derivation to the evolution equation • Numerical implementation using central difference, upwind (when needed), … • Use signed distance function for the Level Set Function (LSF)...
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- Fall '11
- Derivative, Parametric equation, Euler’s Equation