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image 2-d Fouriertransform ?


Hello,

sorry for this question but ..

i have a 2-d image with 8 bit grey level.
Now i make a 2-d-Fouriertransform of the image (in  Mathematica)
The result is a Picture with 4 quadrants, were the signals are
significant.

Now my questions:
I think, only the first quadrant ist important ? Rest ist random ?
What does the axis, the results  means ?



If someone canl help me, i can send an example for better understanding.

In this case, the Helpfunktion in Mathematica ist not to good.

Thanks in advance

Maurus



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