IDW距离反比加权方法，这个有中文注释，看得明白，随机调制信号下的模拟ppm，在MATLAB中求图像纹理特征，是信号处理的基础，包括调制，解调，信噪比计算。- IDW inverse distance weighting method, The Chinese have a comment, understand it, Random ppm modulated analog signal under In the MATLAB image texture feature, Is the basis of the signal processing, Includes the modulation, demodulation, signal to noise ratio calculation.