Lvl_Set_Alg.py

This code implements the paper: “Active Contours Without Edges” By Chan & Vese. This is a nice way to segment images whose foregrounds and backgrounds are statistically different and homogeneous [1].

lvlset(I, init_mask, max_its, alpha, thresh, color, display)

Inputs:

I:2D image init_mask:Initialization for the seed point (1 = foreground, 0 = bg) max_its:Number of iterations to run segmentation for alpha:(optional) Weight of smoothing term. higer = smoother. default = 0.2 color:Color for mask boundary visualisation. example: ‘r’ for red. display:(optional) displays intermediate outputs. default = true

Outputs:

seg:Final segmentation mask (1=fg, 0=bg)