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Problem with double precision and smartpointer in ITK

The problem I have is that I open an Image from a GUI using Qt (through the class I createdImageFrame, this class has defined the PixelType as follows:[详细]

2023-03-17 21:53 分类：问答
Improving FFT performance in Python

What is the fastest FFT implementation in Python? It seems nump开发者_JAVA技巧y.fft and scipy.fftpack both are based on fftpack, and not FFTW. Is fftpack as fast as FFTW? What about using multithread[详细]

2023-03-13 12:26 分类：问答
Audio Spectrum using JACK and fftw in C/C++

I am in need of assistance (documentation, sample code, etc.) in how to develop a audio spectrum using JACK and fft开发者_JAVA百科w in C/C++. I am developing on Mac OS X (10.6+). Any help will be much[详细]

2023-03-12 07:56 分类：问答
Problem with FFTW2 routine in C

I\'m currently working with the FFTW2 (Fastest Fourier Transform in the West) library, and after writing a successful routine in Fortran, I am moving on to C.However, I\'m having some trouble with dat[详细]

2023-03-04 19:59 分类：问答
computing fft and ifft with fftw.h in C

Hi all I am using the fftw C libraries to compute the frequency spectrum for some signal processing applications on embedded systems. However, in my project I have run into a slight hinderence.[详细]

2023-03-01 12:32 分类：问答
Computing FFT and IFFT with FFTW library C++

I am trying to compute the FFT and then the IFFT just to try out if I can get the same signal back but I am not really sure how to accomplish it.This is how I do the FFT:[详细]

2023-02-25 01:22 分类：问答
fftwpp creates a zero filled array after a convolution

I use fftwpp to transform both my data and my convolution kernel into the fourier space, multiply them together like in a scalar prod开发者_JAVA百科uct and convert them back to the real space. When I[详细]

2023-02-19 11:09 分类：问答
Linking FFTW into Matlab Mex file

I am trying to run FFTW code in a mex file.This is strictly for the purpose of development and testing.After some googling, I see that oth开发者_如何转开发ers have tried to do something similar and ha[详细]

2023-02-19 06:38 分类：问答
How do you use the batch mode of CUFFT?

I am trying to figure out how to use the batch mode offered in the CUFFT library. I basically have an image that is 5300 pixels wide and 3500 tall. Currently this means I am running 3500 1D FFT\'s on[详细]

2023-02-16 00:58 分类：问答
Differences between FFTW and CUFFT output

In the char I have posted below, I am comparing the results from an IFFT run in FFTW and CUFFT. What are the possible reasons this is coming out different? Is it really THAT much round off error?[详细]

2023-02-15 23:58 分类：问答