On 07/27/2009 06:06 AM, Guido Grazioli wrote:
Hello all, i'm new to this list;
I have a somewhat working aes1610 driver for libfprint-0.1.0-pre2,
based on the aes2501 driver and aes1610 driver from 0.0.6
I need some help in testing, as even if acquired fingerprint scans
look good in fprint_demo, i cannot get any matches
The driver also randomly crashes when swiping the finger
too slowly in the reader.
Good news everyone.
I found the missing parameter that allows matching with the AES1610 -
borrowed from the old aes1610 driver. I enrolled my right index and
verified it successfully several times.
You'll find the patch against your source attached.
The crash is in nbis/mindtct/dft.c:188 and I couldn't trace down what
was causing it but it may be a bug in libfprint and not the driver. I
was not able to reproduce it after applying my patch though.
Thanks for pursuing this. Looks like my original patch was futile. :)
--- aes1610.c.ggraz 2009-07-29 07:28:09.000000000 -0500
+++ aes1610.c 2009-07-30 20:24:39.153864245 -0500
@@ -955,6 +955,12 @@
.img_height = -1,
.img_width = 128,
+ /* temporarily lowered until we sort out image processing code
+ * binarized scan quality is good, minutiae detection is accurate,
+ * it's just that we get fewer minutiae than other scanners (less scanning
+ * area) */
+ .bz3_threshold = 10,
+
.open = dev_init,
.close = dev_deinit,
.activate = dev_activate,
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