是matlab里的函数吧？在matlab的help文档里搜fspecial这个函数的加高斯噪声的说明，具体的原文说明如下：h = fspecial('gaussian', hsize, sigma) returns a rotationally symmetric Gaussian lowpass filter of size hsize with standard deviation sigma (positive). hsize can be a vector specifying the...
sigma)returnsarotationallysymmetricGaussianlowpassfilterofsizehsizewithstandarddeviationsigma(positive).hsize...
是因为matlab函数库中没有lpfilter这个函数，你要自己建立一个function，再调用这个函数。下面是lpfilter的函数定义，这个lp函数里面的dftuv函数也是需要自己去定义的，上百度找定义dftuv函数的代码吧 function H= lpfilter( type,M,N,D0,n )LPFILTER creates the transfer function of a lowpass filter.Det...
can be obtained by multiplying a lowpass filter with a highpass filter where the lowpass filter has a higher cut off frquency than the high pass filter. Usage GAUSSIANBPF(I,DO,D1) Example ima = imread('grass.jpg'); ima = rgb2gray(ima); filtered_image = gaussianbpf(ima,30,120); ...
Our findings demonstrate that the Savitzky-Golay smoothing filter outperforms the others in smoothing data and computing derivatives of noisy data, despite its limitations in suppressing noise at higher frequencies. On the other hand, the adaptive Gaussian and Mittag-Leffler filters excel in n...
Moving average (MA) filter is a simple Low Pass FIR filter commonly used for smoothing an array of sampled data. Understand & simulate in Python/Matlab.
Pre-modulation Gaussian Low Pass Filter Quadrature implementation of GMSK modulator GMSK spectra GMSK demodulator Performance Frequency Shift Keying (FSK) Binary-FSK (BFSK) Orthogonality condition for non-coherent BFSK detection Orthogonality condition for coherent BFSK Modulator Coherent Demodulator Non-coher...
It can be rendered approximately Gaussian by passing it through a single-pole lowpass filter with a cut-off frequency of fc/n. Now, due to the heavy filtering, the rarer longer runs of 0 s and 1 s have a chance to build up to larger peaks, compared with the lower amplitude of ...
I think the error you get is due to the nature of the sample you use, maybe its RGB image, if so you need to change it to grayscale image or process each channel individually, try this as first attempt :
how do I pass a time dependent function to Level parameters instead of constant? any examples? obj = hwv(0.2, 0.1, 0.05) % (Speed, Level, Sigma) 댓글 수: 0 댓글을 달려면 로그인하십시오. 이 질문에 답변하려면 로그인하십...