On Mon, 2010-09-20 at 20:36 +0200, Hugo "Bonstra" Grostabussiat wrote: > On 09/20/2010 05:11, The Source wrote: > > With enroll and verify I really wasn't getting 'try again', like you > > said. > Okay, the cause of this never-ending try-again messages comes from a bug > in fprintd. I will report it. > > But I wasn't able to get match either. Tried about 30 times, > > re-enrolled a couple of times (deleting previous prints of cource), > > no luck. > I think you need to swipe your finger exactly the same way (angle of > swipe, speed) as you enrolled it to have a chance to get a match. Even > doing this, I often have to try again several times. My fingerprint > sensor has a "guide" to keep the finger in correct position while > swiping (see attached image). If yours doesn't, it may explain why you > have such a hard time getting a match. Moreover, after swiping many > times, fingers tend to become wet, which makes scan quality even worse. > And unfortunately, the NBIS library used to match fingerprints in > libfprint doesn't seem to have any image correction algorithm.
For some devices, we resize using gdk-pixbuf or ImageMagick, which smooths out the fingerprint image and makes it easier to match. Have you guys tried using the ImageMagick code rather than the gdk-pixbuf resize code? _______________________________________________ fprint mailing list [email protected] http://lists.reactivated.net/mailman/listinfo/fprint
