View source for FFT Cuda

=== Input ===
* Image is presented in TIFF file structure
* Array of, FFT of kernels (64x64)

=== Todo ===
* Take a windows 128x128, step by 32 pixels
* Make a FFT (DFT_2D)
* Get nth-kernel, pad 32px zero's to each side
* Multiply FFT with kernel
* Inverse FFT of the result
* Save 128x128 window to the n'th position in the TIFF