Pattern Extraction from image
===

I want to extract the pattern visible in the original image.
I have tried Otsu's and Kittler's Binarization.But I think there needs to be some pre-processing on the colored image before I go for binarization.
Please help ..If anyone can give me the matlab code to extract the pattern..
Thank you

Original Image-http://www.scribd.com/doc/99693028