Juan,
The Nyquist cut-off frequency is just the highest spatial frequency an image can contain i.e. 1 cycle per 2 pixels. e.g. if you happen to have 1mm pixels then the Nyquist frequency will be 0.5/mm.
Michael
Michael Wilson Ph.D.
Principal Physicist
Nuclear Medicine Dept.
Queen Elizabeth Hospital
Birmingham
B15 2TH
UK
0121 627 2389
-----Original Message-----
From: ImageJ Interest Group [mailto:
[hidden email]] On Behalf Of Juan Francisco
Sent: 10 April 2007 10:24
To:
[hidden email]
Subject: On Nyquist theorem and ImageJ
Dear all:
does anyone how to calculate the cuttof frecuency according Nyquist theorem using ImageJ?
Thank you very much!!!
Juan Francisco
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