Shape Moments for Region- Based Active Contours
Shape Moments for Region- Based Active Contours
Shape Moments for Region- Based Active Contours
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Chan and Vese model I.<br />
o Intensity based segmentation<br />
o Piecewise constant Mum<strong>for</strong>d-Shah<br />
energy functional (cartoon model)<br />
o Inside (c 1 ) and outside (c 2 ) regions<br />
2<br />
2<br />
ECV ( c1 , c2,<br />
C)<br />
λ1<br />
( u0<br />
− c1<br />
) dx + λ2<br />
( u0<br />
− c2)<br />
dx +<br />
= ∫ ∫<br />
Ω<br />
in<br />
o <strong>Active</strong> contours without edges [Chan<br />
and Vese, 1999]<br />
o Level set <strong>for</strong>mulation of the above model<br />
o Energy minimization by gradient descent<br />
Ω<br />
out<br />
C<br />
SSIP 2005
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