分别设计理想低通滤波器、巴特沃思滤波器、指数滤波器、梯形低通滤波器,并对含高斯噪声的图像进行低通滤波，截止频率自选，观察不同的截止频率,不同的滤波器的滤波效果。-Were designed for the ideal low pass filter, Butterworth filter, exponential filter, ladder low-pass filter, and Gaussian noise images with low-pass filter cutoff freque

三维数字滤波器中的梯形理想低通和高通滤波器的matlab仿真及其结果-3 d digital filters of the trapezoidal ideal low pass and high-pass filter matlab simulation and the result

地震资料数据处理中所需的低通、高通、带通以及梯形滤波器，对信号在频率域进行相应处理-Seismic data, data processing required in the low-pass, high pass, band-pass ladder filters, signal in the frequency domain