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Fingerprint biometrics systems project

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Re: Fingerprint matching

sindbad said:
could any body help me in changing the image into its orientation field
Click to expand...

You can refer to Raymond Thai paper about the orientation computation.
Try to look at the link below:
**broken link removed**

There will be some matlab code which may be able to help you in orientation field computation.
 

Re: Fingerprint matching

thank you so much you are so kind that makes me ask another question>>>> guys, when I wanna read an image in matlab I use (imread()) command but if I wanna read more than an image ,,,,500 images or the whole folder for example how can i do it:?:>>>>>>>any help plz

best regards,
sindbad
 

Fingerprint matching

If there are 500 images, you may try to create a loop to run the imread command 500 times. For my case, I just read 50 images, I type 50 imread command. The problem when doing looping is just how to change the filename after every loop, as filename is text but not integer.

Anybody expert in matlab can help on this?
 
Re: Fingerprint matching

leekk8 said:
If there are 500 images, you may try to create a loop to run the imread command 500 times. For my case, I just read 50 images, I type 50 imread command. The problem when doing looping is just how to change the filename after every loop, as filename is text but not integer.

Anybody expert in matlab can help on this?
Click to expand...
I tried a loop for importing the extinction (*.data) but unfortunately it didn't work with the images (i.e. *.tif,,,*.jpeg,,,,,*.gif,,,,etc..) actually it imports them but didn't display them and gives an error. However, I found another and better solution by saving them in 3 diminutions array, which worked better……I will post it very soon. :|

Added after 28 minutes:

here the code is attached.......


%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
but plz note that you have to rename your images as numbers (e.g. 1.tif .....22.tif....45.jpeg...etc).........resave the file as an m file and don't forget to put the images in your directory......for any further help i will be more than happy

good luck
sindbad
 
Re: Fingerprint matching

here are links to two fingerprint recognition projects that might help.....


h**p://sourceforge.net/projects/ffpis/

h**p://sourceforge.net/projects/fvs/
 

Re: Fingerprint matching

hi again
Guys could any body help me shifting the fingerprint to the middle of the image then rotate it and what do you know about:
-principle components
-cropping

Best regards,

sindbad
 

Fingerprint matching

Sindbad,

What you mean by shifting the fingerprint to the middle of the image?
If you want to rotate an image, try looking at Matlab Help, there is a command that can do that.

I know nothing about principle components. About cropping, it's a mechanism to focus on a particular area and remove the other area. Cropping is usually used to make an image smaller by just remaining the useful part. For cropping, there is a command in Matlab doing this as well.
 

Fingerprint matching

leek,
I mean moving the fingerprint to the middle of the image so that when i match the matrices they are at a unique position, and about the rotation by what angle should I rotate it? How can I find it, I know it depends on the fingerprint itself but is there a way to find how much this finger print should be rotated, then it’s automatically adjusted.

Merry Christmas
 

Fingerprint matching

Sindbad,

I understand your meaning now. As I know, there is no way you can move the fingerprint to a unique position and determine what angle you should rotate the image.

The solution for this should be, you have to look for some matching methods which can recognize the fingerprint image although there are translation and rotation. In my case, I extract the core point of the fingerprint, so this solve my translation problem. I use neural network as the recognizer, and this solve the rotation problem. User can stamp the fingerprint in any way and any angle, it's quite hard to compute a system to move the image to a unique position and exact angle.
 

Fingerprint matching

leekk,
you are right, I tried many methods some worked but not for all fingerprints, tell me please what you know about neural network cuz i really don't have enough time, i read about it but understood nothing.

thanks alot
 

Fingerprint matching

sindbad,

Sorry for the late reply...Taiwan earthquake make internet life suffer...many website can't be accessed or the speed is very slow...

Did you solve your problem? If you want to know about neural network, you must read some books about the basic concept of neural network. There're a lot of algorithms, and I'm only familiar with backpropagation. As I know, another neural network called radial basis function network also work well in fingerprint recognition...

Try to understand the concept of neural network, if you have question in backpropagation, you can ask me...
 

Re: Fingerprint matching

Hi all,

I am trying to get an image from a MBF200 fingerprint sensor by means of a Spartan3 FPGA. Using the same .bit file on the FPGA I sometimes get a good fingerprint image and other times the image is fuzzy. Does anyone have any VHDL code I can use?

Thanks a lot for your help

Maitane
 

Re: Fingerprint matching

Does anyone know about the gabor filter.. it is implement by Raymond Thai.. is it a low pass filter? Can anyone explain some of the matching technique eg. alignment-based mtaching approach.

Thanks in advance..
 

Re: Fingerprint matching

Check www.dsp-bg.info

There are lot of good stuff about Biometrics

Regards
dpenev
 

Fingerprint matching

hi guyz..im so thankful i made a glimpse of this thread..i actually have the same problem ryt now ...im into doing an offline fingerprint verification system..can u help me on this???tnx and more power..

Added after 4 minutes:

we are implementing it by using matlab and correlation-based method...
 

Re: Fingerprint matching

if you can convert it to C you could use it as base to write it to verrilog and can convert verilog to vhdl by xhdl (of course you can use verrilog directly)
if you want use xhdl send me a mail and i send it to you
 

Re: Fingerprint matching

hi! I am doin a project in fingerprint recognition.am using an mbf200 sensor..
i have tried testing the sensor using 8051.it sort of works(jst tried a few basic tests like reading registers,checking interupt when the finger is placed).However finally i need to use the arm microcontroller.the sensor is not responding with the arm microcontroller.If anyone has used the sensor plz guide me.also i have written a c code for ridge detection..have jst use the simple logic of checking the number of like neighbours.if it is 1 i store the coordinated in an array..however it is showing wrong locations for the row.if someone has a code wid similar logic plz post it...
thanx
 

Fingerprint matching

Have a look at this MATLAB code ...
this will help you to develope the software part of your project



h**p://software.techrepublic.com.com/download.aspx?docid=210769
 

Fingerprint matching

Hi, All
I m fianl year electrical student. I hav chosen "Thumb recogintion and application Spartan 3e FPGA" as my final year project. I need stuff relating my project. if anybody already hav worked plz do help me.
my e-mail add. is
durrani_uet@yahoo.com
 

Re: Fingerprint matching

Im planning to do the same work, would you be so kind to share your files to me.
Pls email it to phyton_gil@yahoo.com
thanks,
gillert
durrani_uet said:
Hi, All
I m fianl year electrical student. I hav chosen "Thumb recogintion and application Spartan 3e FPGA" as my final year project. I need stuff relating my project. if anybody already hav worked plz do help me.
my e-mail add. is
durrani_uet(at)yahoo.com
Click to expand...
 

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