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2017-06-27 17:26:12 -0500 received badge  Nice Question (source)
2014-12-07 07:22:03 -0500 asked a question Best feature matcher for iris pictures

I want to write some code to perform an iris recognition. I've already had a iris pictures which is normalized to cartesian coordinates. I've try to match theese pics using Gabor filter and Hamming distance, but without a success.

So now I'm wondering if in openCV exists a matcher which will be good to provide this kind of recognition? I know there is some predefined matchers, but which one will be the best for very similar pictures? Let me also add that my application should decide if given iris exist already in database or not.

I'm using Java version of openCV

2014-12-06 17:35:22 -0500 asked a question Which feature matcher will be the best for iris recognition

Hi guys, I'm new in biometrics, but I must to write an application for iris recognition. I have already my iris image normalized to cartesian coordinates, and I want to have a database (or just a folder in my local disc) with iris codes.

Now, I'm just wondering which matcher should I choose. Which one is the best for detection a small differences in images?

I've already try to detect features with Gabor filter and then compare it with hamming dystanse, but my results wouldn't be satisfying.

Thanks for any help.

2014-11-21 09:50:47 -0500 asked a question OpenCV Mat object serialization in java

I've tried to serialize a map of pairs and obtained an exception as below: org.opencv.core.Mat

Is there some kind of way to serialize this?

stackoverflow link:

2014-11-17 12:05:23 -0500 commented answer how to extract gabor feature using opencv?

@berak in the begining, I want to apologize for disturbing you, but I have a question - It will be okay if I just replace your square grid to rectangular one? For example 16x8? I really don't get it. :(

2014-11-17 11:51:15 -0500 commented question Gabor kernel parameters in OpenCV

Yes, forum is bugged. For example I must write a comment to see yours

2014-11-17 11:48:16 -0500 commented answer how to extract gabor feature using opencv?

@berak thank you very much for your respone. Really appreciate it.

2014-11-16 11:27:45 -0500 received badge  Student (source)
2014-11-16 09:58:48 -0500 commented answer how to extract gabor feature using opencv?

@berak could you post somewhere a piece of code with getting lpb histograms? I don't know how to connect gaborFilter output with features extraction...

2014-11-16 02:57:57 -0500 asked a question Gabor kernel parameters in OpenCV

I must use Gabor filter in my application, but I have no clue about this OpenCV methods parameters values. I want to encoding an iris. Start of Gabor filter and get features (I want to do this for 12 sets of Gabor parameters values). Then I want to count a Hamming dystans and do authentication.

If someone could write here params ranges, or way how to calculate it in function:

Imgproc.getGaborKernel(new Size(kSize[j], kSize[j]), sigma, theta, lambda, gamma); I'll be very grateful. Of course I have tried to assign it myself, but without success.

Example file:

normalized iris