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Re: Segmentation in ENVI [message #62507 is a reply to message #62422]

Thu, 11 September 2008 08:26

guillermo.castilla.ca is currently offline

guillermo.castilla.ca
Messages: 27
Registered: September 2008

Junior Member

Hi Mort,

> I wonder if we're talking about the same function. There are two
> "Segmentation Image" commands in the ENVI main menu. The one I mean is
>
> "Classification/Post Classification/Segmentation Image"

Sorry, I wasn't aware that there was 'another' segmentation image tool
under 'post-classification'. You are right, if you select all classes
then a single segment is returned, not very useful indeed... My
suspicion is that the two 'segmentation image' tools are one and the
same. In the case of classified images, I think that the tool operates
in a binary image where pixels belonging to the selected classes are 1
and the rest are 0. This must be so, because in the ENVI help for this
item it says 'All the selected classes are combined before
segmenting'. To me this doesn't make sense either. Maybe you could
send ITTVIS an email reporting this, so that in future versions they
correct it.

Cheers

G

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[Message index]

		Re: Segmentation in ENVI By: Mort Canty on Thu, 11 September 2008 00:30
		Re: Segmentation in ENVI By: guillermo.castilla.ca on Wed, 10 September 2008 13:36
		Re: Segmentation in ENVI By: Mort Canty on Wed, 10 September 2008 11:51
		Re: Segmentation in ENVI By: guillermo.castilla.ca on Wed, 10 September 2008 09:46
		Re: Segmentation in ENVI By: Mort Canty on Wed, 10 September 2008 01:52
		Re: Segmentation in ENVI By: Tal on Tue, 09 September 2008 23:19
		Re: Segmentation in ENVI By: guillermo.castilla.ca on Thu, 11 September 2008 08:26

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