how can i calculate -3dB of given picture?

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Mohammad Khishe
Mohammad Khishe 2012-9-21
how can i calculate -3dB of given picture?
http://kmu.site40.net/images/19d3c9e40467.jpg

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回答（2 个）

Honglei Chen
Honglei Chen 2012-9-21
You could do 3dB in U and V direction separately along 2D cut.
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Walter Roberson
Walter Roberson 2012-9-21
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Walter Roberson
Walter Roberson 2012-9-21
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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