Re: Area measurement

Posted by fra-off on Sep 07, 2009; 4:59pm
URL: http://imagej.273.s1.nabble.com/Area-measurement-tp3691257p3691259.html

Thank you for your quick response!

unfortunately I still have the problem beacause a lot of structures in the full picture have values around 112 and furthermore I have more than 1300 slices for sample....and every slice have little different value for the "bands". You can find for example  99, 103, 112........

Francesco

Gluender-3 wrote

Francesco,

for a first try I've applied two times "Process>Noise>Despeckle" to
your JPG-sample. Then I've chosen a threshold at value 112. With this
setting a separation is possible but of course you will have to set
the correct threshold for every image by hand.

Furthermore, you will have to close the ends of your "bands of
interest" by hand and then apply the wand tool.

>Dear experts
>
>I have a big image sequence coming from micro-tomografy analysis. I need to
>calculate the area of some structures that have a gery value very similar to
>other structures (see the picture, I need the thin layer between arrows). So
>when I spotlight this structures by Histogram and Thereshold, I can not
>separate it from other parts that have similar grey values. Finally the
>measurament is terribly overstimate.
>Do you know some trick to resolve my problem?
>
>Thank you
>
>Francesco
>http://n2.nabble.com/file/n3598079/mct_fra.jpg mct_fra.jpg
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HTH
--

                   Herbie

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