level set segmentation using coupled active surfaces
Please use this identifier to cite or link to this publication: http://hdl.handle.net/1926/1533
New: Prefer using the following doi: https://doi.org/10.54294/23ugmy
An Insight Toolkit (ITK) processing framework for simultaneous segmentation of multiple objects using active contours without edges is presented in this paper. These techniques are also popularly referred to as multiphase methods. Earlier, we had an implemented the Chan and Vese  algorithm that uses level- sets to accomplish region segmentation in images with poor or no gradient information. The current work extends that submission to use multiple level sets that evolve concurrently. The basic idea is to partion the image into several sets of piecewise constant intensity regions. This work is in contrast to the level-set methods currently available in ITK which necessarily require gradient information and also necessarily segment a single object-of-interest. Similar to those methods, the methods presented in this paper are also made efﬁcient using a sparse implementation strategy that solves the contour evolution PDE at the level-set boundary. This work does not introduce any new ﬁlter but extends the earlier submitted to ﬁlters to process multiple objects. We include 2D/3D example code, parameter settings and show the results generated on a 2D cardiac image.