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I'm trying generate the FFT of a Gaussian kernel to use in later filtering. My understanding is...
I'm using OpenCV 3.2.0 to do some Fourier space calculations. To obtain a phase image after an...
I'm trying to find the matching score between the boundary of shapes that do not exactly match. I...
Using open cv, I am able to gleaning heavily from the example here. And given the input image...
I am trying to compute and plot Fourier coefficients for some signal and I am getting the following...
I have the solution of an equation (analytic solution) in frequency domain; How to go back in time...
The documentation says that np.fft.fft does this: Compute the one-dimensional discrete Fourier...
ฮ—ello! I hope this is an acceptable sort of question. Going through some code used for signal...
i am working on a pulse sensor project. I get data from the sensor like this: Now i would like to...
Here is what I am trying to do: I would like to take a WAV file (for example, let's say...
Suppose, I have a Spatial kernel function ๐‘“(๐‘ฅ, ๐‘ฆ), and an image ๐ผ(๐‘ฅ, ๐‘ฆ) of...
Suppose I have a unit circle centered at the coordinate system and I perform filtered back...
According to the documentation of scipy.signal.resample, the speed should vary according to the...
I have a vector of size M (say 500), which I up-sample by a factor of MM=500, so that my new vector...
I'm writing a function that takes in a time-varying signal and returns the FFT. It follows the...
I want to combine phase spectrum of one image and magnitude spectrum of different image into one...
I want to recognize voices using a neural network, to do that I need to first get a good input for...
I would like to implement multiplication of polynomials using NTT. I followed Number-theoretic...
I wonder how to do something like Shift zero-frequency component to center of spectrum (matlab...
Applying opencv dft on a real 1-channel Mat, I can use DFT_COMPLEX_OUTPUT flag to control whether...
I work with vibration, and I am trying to get the following information from a FFT...
Say we have a 2D complex-to-complex FFT implemented. How we can now use it to implement 3D FFT - is...
So I try to read this code. And judging from Texture2D<float2>...
I have a problem with calculating fft for a signal which is stored in a matrix using matlab. I am...
I found a very interesting paper about bit-reversal algorithm suitable for in-place FFT: "A simple...
So I am trying, like many others before me, to sift through all the celestial alignments of phase...
I have been trying to write a simple program to perform an fft on a 1D input array using fftw3....
I would like to remove vertical line from an image (an example). I took a 2D FFT and try to apply a...
I have the data that has equivalent intervals and corresponding measurements at relevant points. As...
I generate the an audio file SingleTone.wav using the following sox command. sox -n SingleTone.wav...