Just a note. The WSQ format can be used only for fingerprint image @500 ppi. If the fp image is 1000ppi or more, the wsq is not usefull anymore and jpeg2000 is the correct format. This is also specified in the ANSI/ NIST standard.
Geppy On 06 Feb, 2008, at 14:13, Davidlohr Bueso wrote: > >> Who uses WSQ other than NIST? What is it's advantage? (My WSQ >> knowledge >> is only the bare minimum needed to work with NBIS) > > WSQ nowadays is industry standard. Not only because of it's excellent > compression, but it is also ideal for fingerprint images. > > From Wikipedia http://en.wikipedia.org/wiki/ > Wavelet_Scalar_Quantization > > "This compression method is preferred over standard compression > algorithms like JPEG because at the same compression ratios WSQ > doesn't > present the "blocking artifacts" and loss of fine-scale features that > are not acceptable for identification in financial environments and > criminal justice." _______________________________________________ fprint mailing list [email protected] http://lists.reactivated.net/mailman/listinfo/fprint
