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Computation time significantly differs for 2D, 3D array indexing when solving the same problem. Best approach to address performance?
I wrote a simple code that calculates the covariance of images along different directions and lag spacings and returns a 2D map ...
1 year 前 | 1 个回答 | 1
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Fourier Transform: Inverse FFT of Positive Definite Power Spectrum Not Giving Positive Definite Function
Hello there, I am attempting to write a Fourier transform "round trip" in 2D to obtain a real, positive definite covariance fun...
6 years 前 | 0 个回答 | 0
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Fourier Transform: IFFT Not Giving Original Image -- All Values Off By Same Constant
I am attempting to write a 2D FFT "round trip" algorithm for a real-valued, symmetric Covariance function (hence, why there is n...
6 years 前 | 1 个回答 | 0
