How to remove pictoral muscle and other artifacts from breast color image not grayscale image

I have a color image and i want to remove the pictoral muscle and other artifacts on this image.I want to keep the image as color image. Thanks

Answer 1

[Image Analyst]

You can segment the image to find the parts you want to mask out. Then do this:

 % Mask the image using bsxfun() function to multiply the mask by each channel individually.
maskedRgbImage = bsxfun(@times, rgbImage, cast(mask, 'like', rgbImage));

[KYLE RAB]

Thanks, put how to find the coordinates of the pectoral muscle in order to cut it? the shape is like a triangle. I need to know how to start.

[Image Analyst]

Since I don't have your image (you did not post it for some reason) I can't do an automatic way. So in that case, just use imfreehand(). See attached demo.