Re: Disjoint ROI selection using macro language

Posted by Michael Schmid on
URL: http://imagej.273.s1.nabble.com/Disjoint-ROI-selection-using-macro-language-tp3692854p3692870.html

Hi Ben,

just a short remark:
If you want to combine particles closer than a given distance, create  
a mask and dilate it. If you use the Process>Filters>Maximum for  
dilating, it won't be a square but a circular kernel.

For large distances, thresholding the distance map of the inverted  
mask will be faster than 'max'. Set the threshold range to 0...radius.

Michael
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On 17 Apr 2009, at 15:02, Ben Tupper wrote:

> In case you are interested, I want to determine the smallest  
> distance between particle perimeters - if two or more are close  
> enough then I want to consider them a single object (like a chain  
> of pearls).  I think this macro ...