Re: Measuring areas...

Posted by Rotella, Anthony M. (GRC)[] on Jun 18, 2007; 4:22pm
URL: http://imagej.273.s1.nabble.com/Measuring-areas-tp3699083p3699091.html

Silly me, I just figured it out (I think..). For some reason, areas
displayed in Black in thresholded images, actually have intensities of
255. Maybe it's some option that I have, but it's all fixed. Needless to
say, I was calculating the wrong area (but correctly!)

Tony Rotella

> _____________________________________________
> From: Rotella, Anthony M. (GRC)[]  
> Sent: Monday, June 18, 2007 11:14 AM
> To: 'ImageJ Interest Group'
> Subject: Measuring areas...
>
> Hello everyone,
>
> I was trying to write an algorithm for calculating the area of
> all the pixels in an image (8-bit thresholded) that have 0 intensity.
> I counted up the pixels that were black, but of course realized that
> this wasn't an area, since I didn't count up pixels ^ 2. I was just
> curious if anyone knows an easy way to do this, besides using the
> "Analyze Particle" feature. Thanks..
>
> Tony Rotella