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palm

I am trying to figure out a way to find out the vein pattern in the hand.. Please could someone suggest ways to do the same.? I know first i would need to find the ROI in the image and perform further processing .. Can gabor filter be used as one of the steps ?

Thanks

Community
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vini
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  • See related question on SO: http://stackoverflow.com/questions/8694534/iphone-camera-application – Paul R Jan 19 '12 at 15:35
  • my question is what is the programming languge for those code becuse i try to apply that on MATLAB but it dos'nt work and if there any equivelant code in MATLAB. thanks zainab –  Jun 12 '13 at 09:59

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Ridge filtering seems like a possible processing. I have not tried to clean up the non-veins ridges; perhaps there would not be need for that step in more constrained acquisition conditions.

In Mathematica:

img = ColorConvert[Import["https://i.stack.imgur.com/5og5Z.jpg"], "Grayscale"];
r = RidgeFilter[ColorNegate@img, 3];
Binarize[ImageAdjust@r, .03] // Thinning

enter image description here

Matthias Odisio
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  • is there an implementation of ridge filtering in MATLAB? – vini Jan 18 '12 at 16:24
  • There does not seem to be any implementation shipping with matlab. However, Google reveals user contributions to the matlab central exchange. According to the Mathematica documentation (http://reference.wolfram.com/mathematica/ref/RidgeFilter.html), ones needs to compute "the main principal curvature orthogonal to a ridge as given by the main negative eigenvalue of the Hessian matrix." – Matthias Odisio Jan 18 '12 at 16:54
  • I find this concept a little hard to grasp ! – vini Jan 18 '12 at 17:30
  • One reference would be "Front-End Vision and Multi-Scale Image Analysis", by Bart M. Haar Romeny – Matthias Odisio Jan 18 '12 at 17:47
  • will search and let u knw :) – vini Jan 18 '12 at 18:08
  • Ridge filter as you suggested has been used in finger print detection etc but i am not able to find a code the description given in the mathematica website seems very trivial any other that i can find? – vini Jan 21 '12 at 15:52
  • The book I referenced in my previous comment describes ridge filtering non-trivially. I would think there are other descriptions available online, but I have not searched for any. – Matthias Odisio Jan 25 '12 at 20:18