fftshift in frequency filtering

10 次查看（过去 30 天）
Gova ReDDy
Gova ReDDy 2012-5-25
Does it mandatory to shift the frequency components using fftshift for a fourier transformed image before applying lowpass or gaussian LPF?
Cant we directly perform frequency filtering without using fftshift of fft image.
can anyone explain me the difference? thanks in advance

请先登录，再回答此问题。

回答（1 个）

Stephen
Stephen 2012-5-25
I would imagine that you could directly apply low pass, but I don't really know. This is an interesting question. What happened when you tried doing it?

类别

在 Help Center 和 File Exchange 中查找有关 Frequency Transformations 的更多信息

标签

产品

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by