4 ms·
Why would you need a Fourier transformation to apply a filter?
by mbrock 12y ago
Why would you need a Fourier transformation to apply a filter?
- thisjepisje 12y agoBecause then you'd actually be low-passing the frequencies present in the image, instead of some random bits.
- mbrock 12y agoHuh? If you can apply an FFT and apply a filter in the frequency domain, what's preventing you from applying the convolution in the spatial domain?
- boomlinde 12y agoThe filters used in the article are meant to be applied on linear sample streams. A RAW image is not a linear sample stream. Re-encoding the image into a linear sample stream, applying the effect and then decoding the resulting signal to a RAW image again could be truer to the idea of "Paris with an echo".