Help! How to convert grey scale image to colour contrast image?

I want to count the number of dimples (holes) in the microstructure. I want to change the colour constrast from black and white to some other colour which everyone can see. Is there any other way to count the number of dimples(holes) in the image using image processing software??.

The following code is used:

img=imread('2.bmp');

comp=imcomplement(img);

imshow(comp);

Any help is much appreciated. Please find the attachment.

[darova]

What about im2bw() and bwlabel()?

Answer 1

[Image Analyst]

Try a bottom hat filter on the dark hole image

filteredImage = imbothat(grayImage, .......................

[ruban ramalingam]

Sir., Please suggest me the code so that I can easily track the number and size of the holes...It will be helpful for me