[Insight-users] Watershed Segmentation of 3D RGB Image (user-to-user)

[Atwood, Robert C]

I read in the documentation somewhere that the watershed needs a floating-point data type as input , and programmed my use of this filter accordingly.
 
In any case, for the watershed algorithm  itself to make sense, you would need a data type on which you could define ordering (greater than, less than, equal to) ... which is not true for RGB data. I cast my (integer value) data to a float before using watershed on it and it works fine except for that bug I mentioned a while ago. In principle you should be able to watershed the red value, or the intensity, or any other scalar-valued feature of the rgb image; I expect that filters to extract these are already available. 
 
Robert
 
 

	-----Original Message----- 
	From: insight-users-bounces at itk.org on behalf of Kevin H. Hobbs 
	Sent: Mon 03/01/2005 16:26 
	To: Insight Users List 
	Cc: 
	Subject: [Insight-users] Watershed Segmentation of 3D RGB Image
	
	
	 

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