3d convolution in C ++

Question

I am looking for some source code that implements 3d convolution. Ideally, I need C ++ code or CUDA code. I would appreciate if anyone could point me to a good and quick implementation :-)

Greetings

Answer 1

Do you realize that convolution is usually done with fft? see for example http://en.wikipedia.org/wiki/Convolution

so you need fft library.

The fastest way to calculate convolution is offered at http://www.fftw.org/ (for a traditional central processing unit).

cuda, cufft - http://www.gsic.titech.ac.jp/~ccwww/tebiki/tesla_e/tesla6_e.html

Answer 2

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Answer 3

Intel has a very good example - using SSE + OpenMP and its serial version. This code is mainly intended for profiling a sequential and parallel approach, but this is done in a glorious way. http://software.intel.com/en-us/articles/16bit-3d-convolution-sse4openmp-implementation-on-penryn-cpu/