[問題] fft和ifft已回收
剛剛做了一個小測試,如下所示:
clear all
pic=[30 55 60;
20 48 76;
87 39 57];%原影像
imwrite(uint8(pic),'original.gif');%以uint8格式儲存,存成不壓縮的gif格式
,不要存成jpg
imshow('original.gif')
Fpic = fftshift(fft2(pic));
pic1=ifft(Fpic);
imshow(pic1)
為什麼ifft轉換回來之後不等於原圖呢??
問題到底出在哪?
希望有高手能指點我一下>"<
感激不盡~~
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