Image Reconstruction:Phase vs. Magnitude

18 次查看（过去 30 天）
ramdas patil
ramdas patil 2014-6-27
编辑： ramdas patil 2014-7-2
Figure 1.(c) shows the Test image reconstructed from MAGNITUDE spectrum only. We can say that the intensity values of LOW frequency pixels are comparatively more than HIGH frequency pixels. f(x,y) is image function and F(u,v) is its 2D Fourier transform
f(x,y)= ∑_(u=0)^(U-1)∑(v=0)^(V-1)\ F(u,v) exp^(1j*2Π*xu)/M) e^(1j*2Π*(vy)/N) --(1)
Figure 1.(d) shows the Test image reconstructed from PHASE spectrum only. We can say that intensity values of HIGH frequency (edges,lines) pixels are comparatively more than LOW frequency pixels.
f(x,y)= ∑_(u=0)^(U-1)∑(v=0)^(V-1)\ exp(j*angle(u,v)) exp^(1j*2Π*xu)/M) * e^(1j*2Π(vy)/N)--(2)
i want to ask that in phase only reconstruction part why do i get only edges or lines,why not low frequency components?? because from the 2nd equation i am not getting any idea that only edge like features are emphasized......
  2 个评论
ramdas patil
ramdas patil 2014-6-28
编辑：ramdas patil 2014-6-28
@Gnaneswar Nadh satapathi sir,will u tell me answer about the question..

请先登录，再进行评论。

请先登录，再回答此问题。

回答（0 个）

类别

在 Help Center 和 File Exchange 中查找有关 Fourier Analysis and Filtering 的更多信息

标签

Community Treasure Hunt

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

Start Hunting!

Translated by