| Creating an ordered 'blob' ROI from a messy 'criss-crossed' ROI.... [message #75945] |
Thu, 05 May 2011 08:45 |
George Millward
Messages: 29
Registered: February 2000
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Junior Member |
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Hi there,
I'm working on a project which involves creating several ROIs on a
number of images. The functionality is based
on xROI.pro (but diverged from there a long time ago).
Anyhow, what I want to achieve is for the program operator to be able
to define an ROI by shift-clicking to create
a number of points in [x,y]. Fine, I have this - but for the ROI code
to work, the operator must click in an 'ordered manner' around the
edge (ie, progressing either clockwise or anticlockwise around the
ROI). For the program to be truly 'bomb proof' I need to build it
such that if an operator clicks around the ROI in a 'non-ordered'
fashion - then the resulting 'criss-crossed' ROI can be re-interpreted
as a single ordered solid ROI.
Does this make sense ? Considering that ROIs in general are such a
big deal in IDL this issue/dilemma must have been addressed
before........
I guess simply my question can be rephrased as "How do I convert a
messy 'criss-crossed' ROI into a consistent 'blob' ROI".
Any help, as ever, much appreciated.
Cheers
George.
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