image 2-d Fouriertransform ?

*To*: mathgroup at smc.vnet.net*Subject*: [mg21867] image 2-d Fouriertransform ?*From*: maurus <maurus at gmx.de>*Date*: Wed, 2 Feb 2000 22:54:23 -0500 (EST)*Organization*: [posted via] Leibniz-Rechenzentrum, Muenchen (Germany)*Sender*: owner-wri-mathgroup at wolfram.com

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