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Discussion Groups | Matlab DSP | FFT and IFFT
Technical discussion about Matlab and issues related to Digital Signal Processing.
FFT and IFFT - eddylamhk - Oct 28 6:50:00 2003
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Hi, I want to ask if I FFT an image, how can I recover the image using IFFT. I try to use it directly, but turn out some a totally bright picture. However, when i change the image to a very simple one, say only black and whit region, ifft can receover the image. I find out from textbk that there should a (-1)^n be multiplied in the transformation. But how should I do. Anyone can help me, thx a lot. Eddy |
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