File list (Check if you may need any files):
Mat\FaceMat.mat
...\LowDimFaces.mat
...\PCA.mat
PCA\approx.m
...\displayImage.m
...\Display_image.m
...\fastPCA.m
...\visualize_pc.m
main.m
ReadFaces.m
Data\ORL\s1\1.pgm
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