how can i calculate -3dB of given picture?

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M. Khishe
M. Khishe am 21 Sep. 2012
how can i calculate -3dB of given picture?
http://kmu.site40.net/images/19d3c9e40467.jpg

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Honglei Chen
Honglei Chen am 21 Sep. 2012
You could do 3dB in U and V direction separately along 2D cut.
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M. Khishe
M. Khishe am 21 Sep. 2012
could you write code for this goal?
Walter Roberson
Walter Roberson am 21 Sep. 2012
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Walter Roberson
Walter Roberson am 21 Sep. 2012
You cannot calculate -3dB of an image. You need to calculate -3dB of the data that was used to construct the image.

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