! This FUNCTION solves the finite depth dispersion relationship: ! ! k*tanh(k*h)=(Omega^2)/g ! ! for k, the wavenumber (WaveNumber) given the frequency, Omega, ! gravitational constant, g, and water depth, h, as inputs. A ! high

是一个数字图像处理的示例程序，将一个图像进行2维傅里叶变换，然后进行巴特沃斯高通和低通滤波。-Digital image processing is an example of a program, a two-dimensional Fourier transform of the image, and then Butterworth high-pass and low-pass filtering.

数字闪变仪，基于IEC模拟闪变仪而来，通过低通、高通滤波器、视感度加权滤波、平滑滤波后得到瞬时闪变视感度值。-Digital flicker meter, based on the IEC flicker meter analog, low pass, high pass filter, depending on the sensitivity weighted filtering, smoothing the instantaneous flicker sensation value.