一种从法相到高度的全局算法，fc算法，从图像法相恢复图像高度信息-From the law to a high degree of overall algorithm, fc algorithm method to restore images from the image height information

计算声发射时域信号特征值：裕值，振幅因子FK、fc，峭度，-Calculation of acoustic emission time-domain signal characteristic values: margin value, the amplitude factor FK, fc, kurtosis,