Function for performing non-maxima suppression on an image

基于小波变换模极大值用于检测信号突变点，非原创，测试可用-Based on wavelet transform modulus maxima for point mutation detection signal, non-original, test available

Wavelet analysis is used as a pre processor for a back-propagation neural network with conjugate gradient learning. The inputs to the neural network are the wavelet maxima neighborhood coefficients of face images at a particular scale. The output of