CUDA image upsampling with FFT method
I’m trying to do image upsampling with FFT in CUDA. I first do forward FFT on the image, then I pad the result with 0 as shown below:
Implement low pass filter using cufft
I’m having an issue with a very simple image processing exercise, applying a low-pass filter to an image using cuFFT in CUDA. After performing the inverse FFT, I get negative values in the output, which shouldn’t be the case for an image processing task. Here is my code: