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Re: Pixel modification after classification [message #78159]

Tue, 01 November 2011 05:21

David Fanning
Messages: 11724
Registered: August 2001

Senior Member

Steffen Reich writes:

> I programmed a decission tree with IDL and now I`m at the point that I
> want to eliminate all areas of class below a specific value. For example
> all areas less than 20Pixels. I want use the region_grow function to
> calculate those areas and then change those pixels of the area since the
> result of the region_grow function is a vector of array indices. But
> perhaps I`m on a wrong or circuitous way, therefore I want to ask you
> what do you think about it and if you have any hints for me.

This sounds more like a job for Label_Region, rather than
Region_Grow. My blob analysis tools have a feature that
will allow you to exclude "blobs" below a certain size
from further analysis.

http://www.idlcoyote.com/ip_tips/blobanalysis.html

Cheers,

David

--
David Fanning, Ph.D.
Fanning Software Consulting, Inc.
Coyote's Guide to IDL Programming: http://www.idlcoyote.com/
Sepore ma de ni thui. ("Perhaps thou speakest truth.")

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		Re: Pixel modification after classification By: David Fanning on Tue, 01 November 2011 05:21
		Re: Pixel modification after classification By: Steffen Reich on Wed, 02 November 2011 04:15

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