I am very new to the Orfeo Toolbox and am having trouble deciphering how to
successfully segment a multispectral image.have all the tools loaded into
QGIS 2.18 and have evaluated them in the Monteverdi application as well.
I also have the OTB cookbook up and have read up on the Segmentation
application in chapter 4 page 32 which doesn't indicate what values are
appropriate to enter into the Parameters window to get a valid segmentation
output either in raster or vector format.
(using mean shift here)
1. What are the numerical parameters that are recommended for a MS image
with a 4 band spectral range (to make it simple).
a) Spatial Radius is default 5_how would I know what to enter without
seeing the range radius and how to change it to the appropriate numeric
value?
b) Mode convergence threshold is 0.1000000 What does this apply to?
How should I amend it?
c) Maximum numbers of iterations (100) this is clear
d) Minimum region size (100) this seems like a very important component
parameter but if I am working with a 10 m pixel res I was thinking this
would be a good way to start and have gotten a black image as an end
product.
2. Is there a way to see the segmentation process as it is being applied
when instituting these parameters?
Again_I'm new to the OTB and am anxious to learn so if anyone has some good
information to pass along, I would welcome it.
I'm trying to learn some code along the way and this is a good platform to
realize it.
Thanks for any information.
~Natasha
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