Fig. 1. The Harr wavelet and the Mexican hat wavelets for different scales and translation. (a) The Harr wavelet for scale = 1 (solid line) and 0.5 (dashed line); (b) the Mexican hat wavelets for scale = 1 (solid line) and 0.5 (dashed line); (c) the Harr wavelets for location = 0 (solid line) and 2 (dashed line); and (d) the Mexican hat wavelets for location = 0 (solid line) and 4 (dashed line).