fea_gabor_brodatz.m

用gabor变换算法提取图像的纹理特征(用matlab编写)

% -----------------------------------------------------------------
% This function compute the image features for each Gabor filter
% output, it is used for PAMI paper.
% -----------------------------------------------------------------

function F = Fea_Gabor_brodatz(img,GW,N,stage,orientation)

A = fft2(img);

F = [];
z = zeros(1,2);

for s = 1:stage,
    for n = 1:orientation, 
        D = abs(ifft2(A.*GW(N*(s-1)+1:N*s,N*(n-1)+1:N*n)));
        z(1,1) = mean(mean(D));
        z(1,2) = sqrt(mean(mean((D-z(1,1)*ones(128,128)).^2))); 
        F((s-1)*orientation+n,1:2) = z;
    end;
end;