[fprint] upektc_img: False minutiae on the border of the image

Vasily Khoruzhick anarsoul at gmail.com
Wed Sep 3 02:33:41 PDT 2014

Hi Ricardo,

On Wed, Sep 3, 2014 at 12:03 PM, Ricardo Ribalda Delgado
<ricardo.ribalda at gmail.com> wrote:
> The sensor provices a grey image of 144x384 pixels with the fingerprint
> superimposed.
> The problem is that the border betwen the grey image and the image is
> considered as minutiae my nbis (see the image at
> http://ge.tt/1sNGgJt1/v/0)
> This leads to almost impossible verification/identification. Is there
> something that I am doing wrong? Is a know issue?

Well, upektc_img works for me, at least I was able to login with
fingerprint reader into gnome session.

There's nothing I can do with a driver, because image is processed on
the hardware, so I guess it's necessary to improve
NBIS code. In theory, it won't be too hard to remove minutiaes from
the scan perimeter, but I just don't have enough spare time to
this improvement.


> Thanks!
> --
> Ricardo Ribalda
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