Re: Binary dilation instead erosion

Posted by Volker Baecker on Mar 18, 2010; 12:57pm
URL: http://imagej.273.s1.nabble.com/Decimal-Fractions-in-ResultsTable-tp3688918p3688926.html

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Hello,
could it be possible that in one case "Black Background" is selected in
Process>Binary>Options and in the other not?
Best regards,
Volker

Norbert Vischer wrote:

> I have a strange behaviour that only appears on one of my computers.
> If I run the macro below, only a few of the larger spots will survive erosion - this is what I expect.
>
> However, on one computer (OS X, 32 or 64 bit), the spots are dilated, not eroded. This happens even if I trash ImageJ and install a completely new version 1.43, without  custom plugins.
>
>
> In all cases, spots are black(=0) on white background(=255).
>
> Anyone who can explain this?
>
> Norbert
>
>
> run("Cell Colony (31K)");
> run("Duplicate...", "title=tmp");
> setThreshold(0, 180);
> run("Make Binary", "thresholded remaining black");
> run("Erode");
> run("Erode");
> run("Erode");
> run("Erode");
>

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