How to obtain improfile for shadow and non shadow regions in gray image ?

In matlab we have a command called improfile. I want to use it to plot a graph of comparison between shadow and non shadow areas in an gray image... My input image is gray image with shadows on some regions... The Improfile should contain 2 graphs one representing shadow pixles and other non shadow pixles... any help on this...

Answer 1

[Image Analyst]

Just call it and get the profile. Then threshold into dark and light areas and graph them. Did you have some trouble with the code?

[Image Analyst]

See attached demo for improfile.

There are more sophisticated shadow identification methods than simple thresholding. Let me know if you need references.

[Anand]

thankyou sir, it was helpful