Speeded Up Surround Extrema Feature Detector and Descr iptor for Realtime Applications

用c语言编写了matlab中的extrema函数~ 功能 输出一个离散信号的极大值，极小值及其他们的位置~-C language extrema in matlab function to function great value, minimum value of output a discrete signal their location ~

The current MATLAB program of HHT includes the following modules: 1) eemd.m. The module that performs EMD/EEMD 2) ifndq.m. The module that calculates an instantaneous frequency for a given IMF and 3) extrema.m. A

emd算法中的边界条件函数 %BOUNDARY_CONDITIONS_EMD extends an extrema set to limit edge effects on the interpolations(% [TMIN,TMAX,ZMIN,ZMAX] = BOUNDARY_CONDITIONS_EMD(INDMIN,INDMAX,T,X,Z,NBSYM) % % inputs: % - INDMIN, INDMAX: indices of minima and maxima