Re: extract white object from black background

Posted by Vincenzo Della Mea on
URL: http://imagej.273.s1.nabble.com/3d-plots-for-imagej-tp3702257p3702259.html

the second possibility is the easiest one. There is a Invert item in  
the Edit menu.

Vincenzo

Il giorno 09/lug/06, alle ore 19:00, Michael Ji ha scritto:

> Hi there,
>
> I am a new comer.
>
> I'd like to identify the white object within black
> background for my photo.
>
> The function of "Analysis->Analyze Particles" works
> well to extact black object from white background. But
> I left couple of object which is within black
> background. I wonder if there is a straight way I can
> do by "Analysis->Analyze Particles"
>
> Or I can reverse my original photo, so that the black
> and while is reversed. And I extract black object,
> which is actually while in the original photo.
>
> thanks,
>
> Michael,
>
>
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* Vincenzo Della Mea
* Medical Informatics, Telemedicine and Ehealth Lab
* University od Udine, Italy
* http://mitel.dimi.uniud.it/  -  http://www.eslide.net