Gabor filter implementation

asked 2013-04-21 03:38:24 -0500

Milanista gravatar image

Hi!

I'm asking for a little help with implementing Gabor filter on fingerprint image. I'm computing the kernel in similar function like this. Than I'm applying it to smaller blocks of picture made with ROI and using the orientation in blocks as "theta" parameter and using the kernel with filter2D when visualizing it. So my question is: Can I somehow apply it to the whole picture pixel-by-pixel with theta parameter as orientation of pixel? I hope my question is clear :) Thank you!

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Comments

Maybe I haven't understood it, but I thought that theta is a value the user just sets and doesn't depend on the orientation of the underlying blocks/pixels...

Guanta gravatar imageGuanta ( 2013-04-21 14:02:15 -0500 )edit

Yes, it can be a constant value, but that's not good for me. In my case it is the angle of fingerprint ridges.

Milanista gravatar imageMilanista ( 2013-04-22 00:35:07 -0500 )edit

Interesting, thx for your comment!

Guanta gravatar imageGuanta ( 2013-04-22 02:41:54 -0500 )edit

hi. I'm also interested in this work. I should estimate ridges orientation before I implement gabor filtering? thanks.

galimjan gravatar imagegalimjan ( 2013-12-22 20:43:23 -0500 )edit