error result for circular gabor filter code

hi,

I want to ask about circular gabor filter, I write a code in matlab but it doesn't give me correct output I think there is mistake but I don’t know where

here is the code NOTE sigma is the standard deviation of gaussian and fc is the central frequency of circular gabor

for x = -fix(sigma):fix(sigma)

for y = -fix(sigma):fix(sigma)

G(fix(sigma)+x+1,fix(sigma)+y+1) = exp(-.5*((x/sigma)^2+(y/sigma)^2))* cos(2*pi*fc*(sqrt((x)^2+(y)^2)));

end end

please if you could, help me

thank you and I appreciate your time

Answer 1

[hind]

please any one my help me,

[chitresh]

i thing you write some thing wrong in the code... gb=exp(-0.5(x_theta.^2/sigma_x^2+y_theta.^2/sigma_y^2)).*cos(2*pi/lambda*x_theta+psi);