We want to use this code of urs for recognizing black colored symbol at the left side of the Indian currency. So we cropped that part of the currency and used ur code on those images. We were able to recognize square(50 rs) n rectangle(20 rs) but we are not able to recognize the shape of 'circle' from 500 rs note. So can u help us out by telling us wat changes we need to do to ur code so dat it works for us. Or if u hav some other code which can work for us. Also we want to recognize triangle(100 rs) n diamond(1000 rs). can u provide the code for that also. for ur ref of the kind of shapes we want to recognize, here the site- http://www.rbi.org.in/currency/Sec_fea_Rs500.html