hello group, i have two image A and B. I want to match match these image one to another.if image is match result is give in percentage like 85% match, 100% match or any other value .if any package support for it.please mail me. thank you. Regards Avinash Gupta BCS-In Silico Biology Lucknow 8604401063 9654213253 [[alternative HTML version deleted]]

avinash gupta <gupta308 at="" ...=""> writes: > i have two image A and B. I want to match match these image one to > another.if image is match result is give in percentage like 85% match, 100% > match or any other value .if any package support for it.please mail me. > thank you. Avinash, Reading your post I have several questions running through my mind. - What type of images? - Are they black-and-white, RGB, greyscale? - Are there particular features, or regions, that are more important than others? - What do you mean by a match? Some additional details would be necessary in order to provide a sufficient answer, IMHO. cheers... Brandon Mango Solutions UK

Hi Avinash, If your images are grey level ones and A and B are vectors (arrays) representing the pixels, one measure of similarity is the correlation (i.e. cor(A,B)), if the overall intensity matters, you can look at sum(A-B)^2)/(n*sd(A)*sd(B)), where n is the number of pixels. If you need anything more sophisticated you will need to follow the advice of Brandon Whitcher, i.e. provide more details. Regards, Moshe. > hello group, > > i have two image A and B. I want to match match these image one to > another.if image is match result is give in percentage like 85% match, > 100% > match or any other value .if any package support for it.please mail me. > thank you. > > Regards > Avinash Gupta > BCS-In Silico Biology Lucknow > 8604401063 > 9654213253 > > [[alternative HTML version deleted]] > > _______________________________________________ > Bioconductor mailing list > Bioconductor at r-project.org > https://stat.ethz.ch/mailman/listinfo/bioconductor > Search the archives: > http://news.gmane.org/gmane.science.biology.informatics.conductor > ______________________________________________________________________ The information in this email is confidential and intend...{{dropped:4}}