Matlab Image Processing:How to Proceed to retain just the veins as black?

Once you have the second image, you will need to do image thresholding on it to get what you are asking for. You can implement it yourself or use graythresh from matlab (requires image processing toolbox).

Oki @Pavan I will try this and get abk to you as soon as possible. :Dthank you so much for replying – khadeejah Apr 25 at 5:39.

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