how to threshold amplitude of all frequencies of an image ?

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S. Sal
S. Sal am 11 Dez. 2016
Bearbeitet: S. Sal am 11 Dez. 2016
I need to implement the following line. Need code for any (gray scale) image:
Amplitude of each frequency component in the image (in frequency domain) must be higher than a threshold. e.g. If G is the image in the frequency domain then every element in G must be greater than a threshold.
Any Help would be great. Thanks in Advance

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