Thanks for the fast answer. So I understand that: 1. Monteverdi2 Segmentation/Segmentation option Mean Shift uses all bands 2. Monteverdi2 Segmentation/Segmentation option Edison Mean Shift uses the 1st band only 3. Monteverdi2 Segmentation/Segmentation option Mean Shift is the same than Monteverdi2 Image Filtering/Mean Shift Filtering + the 3 additional steps in Monteverdi2 Segmentation
Correct? Agus On Tue, Feb 25, 2014 at 9:01 AM, Julien Michel <[email protected]> wrote: > Hi, > > Jonathan was only talking about an optimization for speed-up made in Edison > library. The plain MeanShift implementation takes into account all bands and > does not depend on the band order. > > So if you use -filter meanshift as argument to the Segmentation application, > you will get this behaviour. > > Regards, > > Julien > > Le 25/02/2014 08:57, Agustin Lobo a écrit : > >> Hi! >> How many bands are actualy being considered in the Mean Shift segmentation >> process? According to the message by Jonathan Guinet I reproduce, only >> 1 band is used, but >> I'm not sure if this is the case for all the process or just for part of >> it. >> Thanks >> Agus >> >> """""""" >> Jonathan Guinet [email protected] Unsubscribe >> >> 10/21/13 >> >> to otb-users >> Hy Eleni >> >> you underline an interesting point in a previous message : >> " >> I notice that if I change the sequence of the bands ( ie from >> RGBLIDAR to LIDARRGB ) the output clustered image is different >> Is this reasonable? >> " >> this behavior is due to a processing optimization used by default when >> wrraping EDISON (the MED_SPEEDUP algorithm) : >> The bucket mode.explained in following reference : >> >> Mean Shift Segmentation Evaluation of Optimization >> Techniques Jens N. Kaftan and Andr`e A. Bell and Til Aach >> >> To reduce exploration space a 3D hypercube is used the bucket. this >> bucket is composed of spatial ranges : X,Y (the two first >> dimensions) and dynamic range (the third dimension) i.e. the first >> band of data. thus Only the first band of data is taken into >> consideration to reduce exploration >> >> Thus the sequence of band gives differents results. >> """"" >> > > > -- > Julien MICHEL > CNES - DCT/SI/AP - BPI 1219 > 18, avenue Edouard Belin > 31401 Toulouse Cedex 09 - France > Tel: +33 561 282 894 - Fax: +33 561 283 109 > > -- > -- > 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/groups/opt_out. -- -- 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/groups/opt_out.
