how to segment a color image using active contours?

I am trying to preprocess the colour image and segment the region of interest as such from the RGB image. Kindly help me to segment the contour using any type of active contours in the RGB image directly.

Answer 1

[Image Analyst]

It's not so clear what you call an edge in a color image. Maybe you want to convert to hsv with rgb2hsv and use the hue channel. Or maybe posterize the image with rgb2ind(). Anyway, I attach an activecontour demo that I have, though it's not been customized for you, it's just one I have had and posted many times.