Create a Gabor filter by applying Gabor equation using matlab

Question

I tried to create a Gabor Filter. We all know that this kind of filter is more complex than any other filters because it is characterized by more complex features such as ha

Answer 1

You can now create a Gabor filter bank using the gabor function in the image processing toolbox, and you can apply it to an image using imgaborfilt.

Answer 2

Replace below line in your code:

gb= exp(-.5*(x_theta.^2/sigma_x^2+y_theta.^2/sigma_y^2)).*cos(2*pi/lambda*x_theta+psi);

I replace the cos with sin in above matlab code.

Answer 3

The formula is exp(-(...) / (2*sigma^2) ). Isn't it? So 1/2 = 0.5 = .5