On Sat, 2010-04-03 at 21:18 +0200, Juan Antonio Gil Pascual wrote: > Hi Bernado > > I need to compare two fingerprint images and let me know if you can do > with R. I have used the technique of minutiae but it seems to work > better with the cross-correlation and wanted to know if you can do with R. > > Thank you very much > > Juan > > > Bernardo Rangel Tura escribió: > > On Fri, 2010-04-02 at 20:52 +0200, Juan Antonio Gil Pascual wrote: > > > >> Hello > >> I wanted to compare two fingerprint images. How do you do with R?. > >> Is there a role for cross-correlation of images? > >> > >> Thanks > >> > >> > > > > Hi juan, > > > > You was a quite vage in your question, so I don't know exactly what you > > need but try this; > > > > require(ReadImages) > > x <- read.jpeg(image1) > > x1 <- read.jpeg(image2) > > table(x1==x) > > > > > > >
Juan, I don't know cross-correlation to images but I know this for time series in this case: ccf(ts(as.numeric(x)),ts(as.numeric(x1))) -- Bernardo Rangel Tura, M.D,MPH,Ph.D National Institute of Cardiology Brazil ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.