็็How can I delete shadow in this picture

I have ROI pill image but this image have some shadow I want to delete it. How can I do

I attached 2 imgae

1 Black white image

2RGB image

i dont sure if i want deleate that shadow what file it work so I attached 2 image

Answer 1

[Image Analyst]

You're best off using a different lighting geometry so that you don't have the shadow in the first place. But if you must have the light on the left so that shadow is on the right, you can do

mask = bwareafilt(mask, 1); % Take largest blob, which will not be the shadow.

or you can label and take the first (left-most) label.

mask = ismember(bwlabe(mask), 1);