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IMAGEJ archives -- July 2004 (#16)

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            <[log in to unmask]>
Content-Type: text/plain; charset="us-ascii"; format=flowed
Message-ID:  <[log in to unmask]>
Date:         Fri, 2 Jul 2004 08:13:04 -0500
Reply-To:     ImageJ Interest Group <[log in to unmask]>
Sender:       ImageJ Interest Group <[log in to unmask]>
From:         Martin du Saire <[log in to unmask]>
Subject:      Re: Masks for ROI (Re: "find similar" or equivalent)
In-Reply-To:  <[log in to unmask]>

Quite right, that is why I specified "well behaved" particles
etc.  Unfortunately I don't have the coding expertise to generate the
plugin myself (yet), but I wondered if the procedure would work.   Where in
the code does the Wand function detect the <SHIFT> key, and composite the
ROI's?  Would it be possible to "hardcode" that into the plugin so that it
continues adding regions until it runs out of centroids?

I still think a "select by color" would be the safest way to convert binary
to selection, but I am not quite sure how to go about it.  Any ideas?

Later.

Martin

At 10:43 AM 7/2/2004 +0100, you wrote:
>On Thursday 01 July 2004 18:07, Martin duSaire wrote:
> > I could also use a masktoROI function.  Is this any different than a
> > selection by color (GIMP)? I have a few questions:
> >
> > If the particles and other portions of the thresholded image are well
> > behaved, could we use the centroid values from the Analyze Particles as
> > seeds for the Wand function, and composite the the Wand results?  Or better
> > yet, use the outlines generated by Analyze Particles?
> >
>
>If you want the procedure to be bullet-proof, only the StartX and StartY
>pixels is guaranteed to be in the particle. Centroid and Centre of mass can
>be outside or in a hole.
>
>Cheers,
>
>Gabriel

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