Add naive detection of image encryption: if stddev between two
adjacent rows is higher than threshold assume that image is encrypted
and decrypt it.
Fixes fd.o bug 88945
Use fpi_mean_sq_diff_norm() for blank line detection and
fpi_mean_sq_diff_norm() for duplicate line detection.
Fixes finger presence and removal detection.
The code was indented, but only the first call was actually in the
conditional, which meant that initialisation carried on as normal on top
of a failed USB device. Exit early and remove the conditional to fix
this.
https://bugzilla.gnome.org/show_bug.cgi?id=98594
The code was indented, but only the first call was actually in the
conditional, which meant that initialisation carried on as normal on top
of a failed USB device. Exit early and remove the conditional to fix
this.
The device is already supported by the vfs5011 driver and non-
blacklisted, so will show up in the udev rules, but for ease of
backporting to older versions, add it to the whitelist anyway.
https://bugzilla.redhat.com/show_bug.cgi?id=1173367
It seems that on faster devices, the driver can get more duplicate lines.
Without this change scan looks too stretched.
Suggested by: Thomas Rinsma <thomasrinsma@gmail.com>
Smart sensors like Upek TouchChip Coprocessor can provide scan status instead
of image, as result we need to report such status as "short scan" or "finger not centered"
from within the driver, since it's not a session error.
Sensor width seems to be only 128 pixels and that's not enough
for scanning whole finger surface. Lower bz3_threshold to 25,
since for wrong finger score never goes above 10, but sometimes
for right finger score is below 40.
Sensor width seems to be only 128 pixels and that's not enough
for scanning whole finger surface. Lower bz3_threshold to 20,
since for wrong fingerprint score never goes above 10, but sometimes
for right finger score is below 40.
New driver for VFS5011 138a:0011 and 138a:0018
https://bugs.freedesktop.org/show_bug.cgi?id=61692
[vasilykh]:
- use g_get_real_time() instead of non-portable time()
- use g_free() instead of free()
- comment out "RECV(VFS5011_IN_ENDPOINT_CTRL2, 8)"
Some scanners provide hardware assistance in frame assemling, i.e.
horizontal and vertical offset to previous frame is provided. This
commit improves code to utilise that assistance. Sensors without
hardware assistance will use software algorithm, which was also
improved to do search in horizontal direction.
