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Fingerprint enhancement using gabor filter using c

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bibhukalyan

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Hi everyone,
I want to use gabor filter for enhancement of fingerprint image.For this i am referring this.
I know how to calculate the orientation of fingerprint.But i am not able to understand how to calculate the other parameter.
Can anyone explain me how to calculate the required parameters so that i can built a c code for it ?
or Explain me the gabor filter so that i am able to create a c code for it.(input is a fingerprint image and i know the pixel values)

thanks
bibhu.
 

I want to convert the below equation into a c code.
gabor eq:

G(x,y,theta,T) = exp{-0.5 (x'^2 / sigma_x^2 + y'^2 / sigma_y^2)}cos(2*pi*x'/T).

x' = x cos(theta) + y sin(theta);
y' = -x sin(theta) + y cos(theta);
sigma = standard deviation
T is the period of the sinusoidal plane wave

Here i know the theta - orientation of fingerprint image.

but for an image what is x,y,T,sigma_x and sigma_y and how i will calculate it.
please help me to calculate these things for fingerprint image.



thanks.
 

Hi,

I kindly ask your help with some information of Enhancement for fingerprint using Gabor filter by Matlab...Actually I just start my project with this and I need some keys to go with this way as I believe that you have an experience with this....please send me any information/papers that you thing will help me.


your help is highly appreciated
 

Use complex lib in header reference. you can try
 

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    FULTON

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Hi phongphan,

Thank you for your reply! I've seen ur files, it's very useful but I'm using Matlab not C++ .....one more request! do you have any papers/thesis/links about Fingerprint enhancement using gabor filter as I need it for my upcoming presentation....

Thanks & Regards
 

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