Dependence of Shape-Based Descriptors and Mass Segmentation Areas on Initial Contour Placement Using the Chan-Vese Method on Digital Mammograms

Figure 1

Search space for localizing the initial contour. (a) The original mass lesion, (b) the weighted TV flow denoised image with , (c) dense nested patterns of iso-level contours representing the search space for localizing the initial contour on the gradient map, (d) radial distances from a reference point to the iso-level contours, and (e) initial level set contour, representing points with maximum gradient in the radial direction within a predefined radius.

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