Re: [otb-users] How to use the vector from segmentation to classify an image?

[Guillaume Pasero]

Hi Patricia, If I understand right, you want to perform object-based classification. In OTB-5.6.1 there is the application TrainVectorClassifier to train a classifier based on input geometries. You have to set several fields in the geometries you want to use for training : - one field to indicate the class of the geometry - several numeric fields to store the features attached to geometries. The fields can be extracted from a raster with LSMSVectorization and modified with QGis. After the training, you can either apply the model on the full set of geometries (with OGRLayerClassifier), or try to apply it on a raster (with ImageClassifier, but more difficult). Regards, Guillaume On 11/24/2016 02:09 PM, Patricia Lourenco wrote: Dear all, I am new with OTB-Monteverdi 5-6-1. I want to classify an image based on the segments created in the LSMVSVectorization (step 4 of the segmentation)using OTB/Monteverdi versions 5.6.1. However, I am not being able to do it. My questions are: 1. Which are the steps that I should take to do a classification based on segmentation? 2. Which OTB-Application should I use to select the segments for my classes? Thank you, in advance, for your help. Sincerely, Patricia -- -- 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 otb-users@googlegroups.com To unsubscribe from this group, send email to otb-users+unsubscr...@googlegroups.com 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 otb-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout. -- Guillaume PASERO Responsable technique Business Unit E-SPACE & Geo Information - Département Image & Applications CS Systèmes d'Information Parc de la Grande Plaine - 5, Rue Brindejonc des Moulinais - BP 15872 31506 Toulouse Cedex 05 - FRANCE +33 561 17 64 21 - guillaume.pas...@c-s.fr -- -- 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 otb-users@googlegroups.com To unsubscribe from this group, send email to otb-users+unsubscr...@googlegroups.com 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 otb-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.