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Posted by Florian Ulrich on Jul 14, 2005; 8:55pm
URL: http://imagej.273.s1.nabble.com/AND-function-tp3705233p3705242.html

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Date: Thu, 14 Jul 2005 21:40:44 +0200 (MEST)
Subject: Re: AND function
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Tnx for the answer. My wrong assumption in the beginning is another good
demonstration that what one spontaneously regards as being logical has
nothing to do with mathematical logics...

Best,

Florian

> Florian Ulrich wrote:
>> Ups, thanks,
>>
>> just discovered that myself as well... now, I am curious: on which type
>> of
>> images and for which kind of analysis would you then use the AND
>> function?
>> What is the significance of the AND function to your images?
>
> Masking off lower bits while leaving the upper bits unchanged.
> This could be used to blank background noise below a certain
> threshold w/o modifying brighter image structures.
>
> There are other clever uses for AND and OR as well.
>
> Ray
>
>