Low rank approximation of grayscale image based on SVD
Eckhart, University of Chicago
See
svd_eckhart_a.m
and
svd_eckhart_b.m
for the detail.
Original RGB Image
Original Image and Approximations
Original Grayscale Image A=A(480)
480 by 640 matrix, rank(A)=480
A(20): the best approximation by matirices of rank 20
A(50): the best approximation by matirices of rank 50
A(80): the best approximation by matirices of rank 80