Selection brush tool usage

Posted by PEARSON Matthew on
URL: http://imagej.273.s1.nabble.com/Selection-brush-tool-usage-tp5017711.html

Hi all,

I'm trying to figure out the ways to query if a selection is say an oval, rectangle or composite in a macro?  I know i can do ROIManager>More>List to find out what Type each selection is but is the only way to extract this info through renaming the overlay elements table to "Results" then using getResultString on the Type column?  If it is a composite i will then split this selection so i can process each area separately.

But perhaps there is an alternative for what i want to do.  I want to mark several selections on an image and add them to the manager using a tool that has a defined initial size but can be expanded freehand if necessary by left clicking and moving the mouse hence using the selection brush but the issue with it is it can produce composite or a single selection depending on if the user holds the shift key or not.  So if the user has pressed shift i need to know that the selection is a composite and then split into separate selections for processing.  If they have not held shift then the selection will be just one single marked area but the macro doesn't know which they've done unless i extract the overlay elements info.

A paintbrush type tool which allows you to add multiple separate selections to the ROI manager would be useful if it doesn't somehow exist already?

Thanks for the advice,

Matt


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Matt Pearson
Microscopy Facility
MRC Human Genetics Unit
Institute of Genetics and Molecular Medicine (IGMM)
University of Edinburgh
Crewe Road
EH4 2XU





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