[fprint] Enroll and verify fingerprint images

Igor Filatov ia.filatov at gmail.com
Tue Jun 19 16:16:00 UTC 2018

Not sure I understand what you're trying to do, but if you want a cli tool
to compare fingerprint images, you could write one using some functions in
img.c. But you might need to normalize your images first.

On Tue, 19 Jun 2018, 16:08 Bastien Nocera, <hadess at hadess.net> wrote:

> On Tue, 2018-06-19 at 12:49 +0200, Péter Gönczöl wrote:
> > Hi,
> >
> > Is it possible to enroll and verify fingerprint images (bmp format,
> > grayscale) with libfprint?
> > I've been reading the API docs and fprint.h but every functionality
> > I'd need appears to be hidden from the applications.
> >
> > It seems to me that the only option is to use the lib internal
> > functionality like fp_async_verify_start() and do it manually. Did I
> > miss something? Could you help me on how I should get started?
> >
> > Sorry if this is an amateur question, I'm new to native development.
> > Thanks in advance!
> We don't support it, we only support enrollment and verification from
> an actual physical device.
> If you really wanted the feature (it would be good to explain why
> though), you could create a driver that can take images from the disk,
> to enroll them.
> This might be helpful, although the patch needs updating:
> https://gitlab.freedesktop.org/libfprint/libfprint/issues/44
> Cheers
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