What is frequency in an image?

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Jim
Jim 2012-5-9
Hi,
If we apply fft to a signal,we will get the frequency domain of the signal(how the signal is changing according to frequency)
Does the image contain frequency?
What is fft of an image?
Can anybody suggest me anything about this
Thanks in advance

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回答（1 个）

Daniel Shub
Daniel Shub 2012-5-9
For a MATLAB flavored introduction I would start with Steve's blog
http://blogs.mathworks.com/steve/category/fourier-transforms/

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