Hi all, I´d like to ask two clarifications about the mean shift segmentation implemented in OTB. I was not able to find these in the doc.
1 - What distance metric does the range radius parameter uses when working with multiple bands? Is it euclidean distance by default? So to further clarify how this works, if I have the following three pixels with associated values. | band | Pixel 1 | Pixel 2 | Pixel 3 | | band1 | 50 | 55 | 100 | | band2 | 34 | 30 | 35 | | band3 | 60 | 56 | 60 | The euclidean distance between the pairs is the following. | Pair | Distance | | 1-2 | 7.5 | | 1-3 | 50 | | 2-3 | 45 | If I set a range radius of let's say 15, which is <<45 and >>7.5, does that mean that Pixels 1 and 2 will be made the same value and Pixel 3 will be another value (assuming they are all within the same spatial radius). 2 - My second question. What is the unit of the spatial radius? I'm assuming pixels, but I'd appreciate confirmation. The reason I am using the segmentation is that I'm trying to delineate areas of similar land use history using time-series of Landsat vegetation indices as input. Thanks in advance for your help, Cheers, --- Loïc Dutrieux Wageningen University The Netherlands -- -- Check the OTB FAQ at http://www.orfeo-toolbox.org/FAQ.html You received this message because you are subscribed to the Google Groups "otb-users" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/otb-users?hl=en --- You received this message because you are subscribed to the Google Groups "otb-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
