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magnitude in images

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munch kitty
munch kitty 2012-2-27
i just calculate the magnitude from the abs value of images.but it returns the large matrix having abs values value.but i want the one magnitude value for the whole images?. i used max function.is it correct?
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munch kitty
munch kitty 2012-2-28
color images sir.no formulas sir.simply we calculate abs for given image sir.how to get a single mag for a whole image?
Walter Roberson
Walter Roberson 2012-2-28
Based upon the information you have provided, the required outcome is undefined, so you might as well use _any_ magnitude between the minimum and maximum value.

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回答（2 个）

Walter Roberson
Walter Roberson 2012-2-27
There are multiple ways of defining the "magnitude from the abs value of images", and using max() is one of the ways. It does not appear to be a common way, but whether it is right or wrong depends upon your needs.
Rajesh Kumar
Rajesh Kumar 2012-2-27
lets say A is an 2dim matrix.. max(A) gives a row matrix with elements as maximums in each column.
>> A= [1 3 5;2 6 7;9 7 2]
then, max(A)=[9 7 7]
and then max(max(A))=9
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munch kitty
munch kitty 2012-2-28
i know this. i jst ask whether its correct or not for magnitude calculation us my question?

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