Hello Pat,
To apply Gabor filters to a fingerprint image, first load the image. Then, create a set of Gabor filters tailored to the specific orientations you desire, utilizing MATLAB’s 'gabor' function from the Image Processing Toolbox. Next, convolve each Gabor filter with the fingerprint image to extract texture details.
% Read and convert the fingerprint image to grayscale
fingerprintImage = imread('fingerprint.png'); % Replace with your image file
fingerprintImage = im2gray(fingerprintImage);
% Define Gabor filter parameters
wavelength = 4; % Example wavelength
aspectRatio = 0.5; % Example aspect ratio
orientations = [0, 22.5, 45, 67.5, 90, 112.5, 135, 157.5];
% Apply Gabor filters and display results
figure;
subplot(3, 3, 1); imshow(fingerprintImage); title('Original Image');
for i = 1:length(orientations)
gaborFilter = gabor(wavelength, orientations(i), 'SpatialAspectRatio', aspectRatio);
filteredImage = imgaborfilt(fingerprintImage, gaborFilter);
subplot(3, 3, i+1); imshow(filteredImage, []); title([num2str(orientations(i)), '°']);
end
Hope this helps!
