Diferences between DFT and FFT (magnitude) results
可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I aim to get the DFT of an image in OpenCV. Using dft function, I'm able to calculate it, and then paint it by calculating its magnitude (then, apply the log and finally normalize it in order to paint values between 0 and 1). My result is, for the following image, the result I show you (with swap in order to have lower frequencies in the center of the image): However, if I compare it to the result I obtain using other tools like Halcon , It seems incorrect to my since It seems to have really "high" values (the OpenCV DFT magnitude