what is Frequency in a image

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Gova ReDDy
Gova ReDDy 2011-12-20
Applying fourier transform to a image will convert it into frequency domain and the complex values are obtained. Can anyone explain... what does the frequency in a image represent or what does the frequency in a image means.

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回答（3 个）

David Young
David Young 2011-12-20
Walter Roberson
Walter Roberson 2011-12-20
For the first half of the fft results, fft bin index N corresponds to a pattern that occurs (N-1) times across the signal, with bin index 1 corresponding to a constant offset.
So for frequency in an image, substitute the word "image" for "signal" in the above.
Image Analyst
Image Analyst 2011-12-20
  2 个评论
Gova ReDDy
Gova ReDDy 2011-12-21
Thanks.....
How to select the cutoff frequency of the high pass filter for extracting frequencies of the line contained in this image i.e., the high frequencies
http://tinypic.com/view.php?pic=2yxr9lv&s=5
Image Analyst
Image Analyst 2011-12-21
I'm done with that. We've been over this in countless postings and you know my feelings on it already. You keep trying wrong approaches with a new angle in each new posting. Sorry, but I'm finished discussing that.

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