Here we show a grayscale image given by a 596 by 794 matrix, and its approxamated pictures of level l = 1,2,3,4,5 of the multi-resolution analysis based on the Haar wavelet, which is also called the Daubechies 1 avelet and the simplest wavelet function. The level l approximation is a 596 times 2^{-l} by 796 times 2^{-l} matrix.