Commit graph

204 commits

Author SHA1 Message Date
Daniel Drake
b8dc77b56e Fix verify/identify error handling
If verify_start failed, we need to run verify_stop. Same for
identification.
2008-02-18 17:55:35 +00:00
Daniel Drake
866dd941cc Add timing and polling infrastructure
Add timeout mechanism as an asynchronous equivalent of sleeping (uru4000
needs this).

Start implementing polling infrastructure which also accounts for pending
timeouts. We don't expose file descriptors yet, but this is a start.
2008-02-16 12:50:01 +00:00
Daniel Drake
eff26bf0be aes2501: port to asynchronous model 2008-02-16 12:49:58 +00:00
Daniel Drake
0aaffcee33 Allow jumping to arbitrary state in a SSM
This is looking less and less like a simple state machine now, but it's
proving a useful model!
2008-02-16 12:49:37 +00:00
Daniel Drake
77b5dab04b aeslib: introduce user_data for write registers callback
aes2501 needs this for state tracking
2008-02-16 12:49:27 +00:00
Daniel Drake
6f08a3666d aeslib: fix register write boundaries 2008-02-16 12:49:20 +00:00
Daniel Drake
d914712437 aes4000: port to asynchronous model 2008-02-16 12:49:17 +00:00
Daniel Drake
d731d5f3a3 aeslib: port to asynchronous model 2008-02-16 12:49:02 +00:00
Daniel Drake
3048b37176 Port imaging layer to asynchronous model 2008-02-16 12:48:44 +00:00
Daniel Drake
aeeec97fb2 upekts: port to asynchronous model 2008-02-16 12:48:25 +00:00
Daniel Drake
5b1f6a0df7 Port primitive driver layer to asynchronous model 2008-02-16 12:47:56 +00:00
Daniel Drake
69760547df Disable all drivers while internal API is being reworked 2008-01-30 14:17:08 +00:00
Daniel Drake
bf7093d607 Port to libusb-0.9.0 (synchronous I/O)
Straightforward port to libusb-0.9.0 sync I/O functions, to give libusb-1.0
a bit of a test drive and to create a reference point for later.
2008-01-30 14:16:35 +00:00
Gustavo Chain
6f456f399d Add Secugen FDU2000 driver
[dsd@gentoo.org: some trivial changes:
fixed some warnings
fixed fp_img memory leak on error
renamed endpoint constants (calling a bulk endpoint 'ctrl' is confusing,
as a control endpoint is something different)
]
2007-12-27 01:09:32 +00:00
Daniel Drake
659d8346be Compiler flags update
Dropped -Wextra as it is not that useful.
Set compiler flags to be more like the kernel's.
Set std=gnu99
Fixed some warnings.
2007-12-27 01:06:55 +00:00
Daniel Drake
c8aa33da0b v0.0.5 release 2007-12-07 15:07:07 +00:00
Daniel Drake
642010643d uru4000: Add support for Microsoft Fingerprint Reader v2
After lot 713, Microsoft fingerprint readers changed. The new version
comes with a new USB product ID and a challenge-response authentication
scheme where the device challenges the authenticity of the driver.

An independent third party produced documentation on the computations
needed to convert a challenge into the correct response, and I then used
this documentation to produce a clean-room reimplementation of the
authentication scheme.
2007-12-07 15:05:16 +00:00
Daniel Drake
474da5f2c7 Add a disclaimer for the university 2007-12-07 15:05:13 +00:00
Daniel Drake
c1f8581ec9 Cleanup discover_device in examples
Andrei Tchijov pointed out that the discover_device() function is written
in a strange way.
2007-12-01 13:00:33 +00:00
Daniel Drake
3479dee0e4 aeslib: image assembly
All 3 authentec drivers now use a shared image assembly function.
2007-11-26 23:28:14 +00:00
Daniel Drake
e228f2c7da Introduce shared functions for authentec drivers
Currently provides register writing functionality only, more common ground
will be moved here soon.
2007-11-26 22:53:41 +00:00
Anthony Bretaudeau
8e0e8e4386 aes1610: imaging improvements
bz threshold is now 10 (instead of 15). I think it is ok for the moment.
If we manage to get higher image quality in the future, we'll change that.

max_frame is set to 350. 150 was too low => incomplete fingerprints

the driver was designed to stop the acquisition as soon as it gets a blank
frame (=> incomplete fingerprints). Now it waits to have at least 50 blank
frames before stopping.
2007-11-26 17:51:31 +00:00
Daniel Drake
4e2be56db7 v0.0.4 release 2007-11-22 18:00:15 +00:00
Daniel Drake
1ee6210be3 Hookup AES1610 driver
An oversight pointed out by Michele B.
2007-11-22 17:25:27 +00:00
Daniel Drake
69700855e2 Implement identification for imaging devices 2007-11-21 00:30:00 +00:00
Daniel Drake
3f70d6f794 Identification infrastructure 2007-11-20 22:12:24 +00:00
Daniel Drake
dbcd293ab3 v0.0.3 release 2007-11-19 18:41:03 +00:00
Anthony Bretaudeau
c5a550e42c Add Authentec AES1610 driver
This is an active capacitance swipe-type device similar to but smaller
than the AES2501.

Image processing performance is good but matching performance is not so
good. The bozorth3 matcher needs tweaking in order to better cope with
small sets of minutiae.

With a lowered threshold, matching performance is good enough for now.
2007-11-19 18:39:03 +00:00
Daniel Drake
6245acea84 Add API to delete enroll data 2007-11-19 18:29:26 +00:00
Daniel Drake
887e0e6acf Add API to access minutiae 2007-11-19 00:27:27 +00:00
Daniel Drake
fa742a2142 Use G_N_ELEMENTS macro 2007-11-17 23:47:06 +00:00
Daniel Drake
af945b2738 Version 0.0.2 2007-11-17 13:17:15 +00:00
Daniel Drake
fa24d51304 Fix variable get_img_width/height return value
Fix the functions to conform to the documentation: -1 means non-imaging
device, 0 means variable. Internally, -1 is used to represent variable
height (to be noticably different from the memset-imposed default of zero).
2007-11-17 13:17:15 +00:00
Daniel Drake
ba24c0884a Rework some image handling; add public binarization API
I want to offer the ability for an application to view a binarized
version of a scanned print. This lead onto a few changes:

 1. Store minutiae and binarized data inside fp_img
 2. Move resize code to the capture path, it previously happened much
    later.
 3. Add fp_img_binarize() to return a new image in binarized form.
 4. Add a BINARIZED_FORM flag to prevent an image being binarized again.

In future, it would be nice to be able to binarize without detecting
minutiae, but this involves some work on the NBIS interaction.
2007-11-17 12:51:28 +00:00
Jan-Michael Brummer
72c304999a Add UPEK TouchChip driver
The UPEK TouchChip is an active capacitance imaging device with a
press-type sensor. It also has image storage capabilities which will
hopefully be accessible through libfprint in the near future.

This device can be found in the Samsung P35 laptop.
2007-11-17 12:51:20 +00:00
Daniel Drake
791eeab859 aes2501: restore default bozorth3 match threshold
With the multiple register writing code, the image quality is much
better. It's trivially easy to get a match score of 100, and 200 is
possible with a little effort. Remove the lowered match threshold.
2007-11-16 15:44:39 +00:00
Daniel Drake
be0e9debd9 aes2501: write multiple registers simultaneously
Instead of writing each register in a separate USB transaction, we now
write up to 16 at once.

This drastically improves scan image quality due to reducing the amount of
time needed per iteration of the sampling loop (sending 1 USB transaction
per iteration instead of 7).
2007-11-16 15:35:48 +00:00
Daniel Drake
bfc55c4f0f Use older ImageMagick API
Debian ship an ImageMagick that is more than 2 years old. Switch to using
older APIs so that we have compatibility all-round.
2007-11-16 14:24:04 +00:00
Daniel Drake
3fa3c0daf7 Initialize enrolled image pointer to NULL
Currently this is a dangling pointer if the image capture fails, and then
we try to standardize an invalid pointer --> crash
2007-11-16 13:14:30 +00:00
Daniel Drake
069b4a30eb Doc and build updates
Add ChangeLog generation makefile target.
Group all copyright notices in AUTHORS.
Update some doxygen comments, and allow fp_dev_close(NULL)
2007-11-15 23:00:04 +00:00
Vasily Khoruzhick
06e8040956 aes2501: Detect reversed scans
aes2501 can be mounted 180 degrees rotated (this happens on most part of
laptops), so driver should detect whether sensor is 180degrees rotated
and assemble frames in right order.
2007-11-15 16:21:03 +00:00
Daniel Drake
6866ea626e v0.0.1 release 2007-11-15 09:56:47 +00:00
Daniel Drake
2ad14c0212 Add AES2501 driver
This driver works quite nicely. Seems a little too sensitive though (too
much black in the standardized image, not enough ridge gap definition).

Processing results are quite good, but you need a good enrollment image
(i.e. long!). It's best to get such images by pressing harder than you
might think necessary and swiping slowly.
2007-11-15 09:54:39 +00:00
Daniel Drake
5485f8031d Return images through enroll/verify path
Added new API functions to obtain images, even when scans are bad, perhaps
a useful way to show the user just how good/bad the scan actually was.

Drivers and examples updated accordingly.
2007-11-15 09:54:39 +00:00
Daniel Drake
a86cd51959 Clean up on exit, and convert to singly-linked-lists
This adds fp_exit() to the public API, intended to be called while the
driving app is shutting down.
2007-11-15 09:54:38 +00:00
Daniel Drake
a76f55db0d upekts relicensing
Pavel Machek and Timo Hoenig agreed to relicense their work. Thanks guys,
I look forward to working together.
2007-11-15 09:54:35 +00:00
Daniel Drake
71e4bb39ec Allow drivers to specify custom bz3 match threshold
aes4000 detects fewer minutiae and hence returns lower scores.
2007-11-12 23:28:46 +00:00
Daniel Drake
e3451158e9 Custom image resizing
mindtct appears to completely ignore the pixels-per-mm input parameter
(ippmm). When processing AES4000 images, the binarized image is
completely mangled and a lot of ridge information is lost.

Resizing the AES4000's small images results in a huge imaging performance
gain.

We use imagemagick for the resizing, as it's resizing code resamples the
image too (smoothing it out), which further improves performance.
2007-11-12 23:28:46 +00:00
Daniel Drake
a73cbc10fb aes4000: image quality improvements
The windows driver takes one sample at the previous register settings
and then changes some registers before resamping (and getting much better
images). The exact changes that it makes seem to vary, perhaps based on
the histogram.

Anyway, this is an approximation of the settings used for the 2nd sample
which should help matching results.
2007-11-12 23:28:46 +00:00
Daniel Drake
b9238e8b8a Support images with variable dimensions
For example, AES2501 returns images that vary in height.
2007-11-12 23:28:45 +00:00