Text extraction from a binary image

I am doing a project to read the data on a calculator screen via image processing. I need to make the image binary in such a way that only the digits in the image appear black and the rest is white. Can I do it with any image enhancement tool? Please suggest. Can somebody do it for me?

The link to the image is -

Thanks in advance

[Chandra Shekhar]

There is no image in that link,it is saying doesn't exist.

Answer 1

[Chandra Shekhar]

use 'histeq' function for enhancement or use 'adapthisteq' by choosing proper clipping range.

After applying this method convert to binary.

[Soumyadip]

The link to the image is - http://i49.tinypic.com/33y25u0.png... I think now its working

[Soumyadip]

I tried applying histeq but neighboring regions other than the digits are also turning out to the black which is undesirable. What to do?

[Soumyadip]

I applied adapthisteq and converted to binary but I am getting dark patches like -

Please advise how to remove the dark regions

[Image Analyst]

See my answer to your duplicate question. I got the numbers out of there using color segmentation and some standard image processing to clean up some noise. I didn't even have to do background correction. You should not accept an answer if it didn't answer your question.