Re: [otb-users] DEM file in training for classification

[Guillaume Pasero]

  
  
Hi,
In fact the DEM is not always used. It can be used if your input
  image and training vectors are not in the same projection. For
  instance, if you use a sensor image and training vectors projected
  in WGS84, the application will have to convert the polygon
  coordinates from WGS84 to your sensor frame, hence the need of a
  DEM.
Regards,
Guillaume

On 01/23/2018 03:52 PM, Hristo Nikolov
  wrote:


  Dear all,
Since while I'm wondering why DEM is needed in training for
  classification procedures. I hope I 
read the OTB documentation, but no reason was stated. Even
  the link set for the geoid file
is broken. Any idea why this is happening?


Regards.
Hristo
  
  -- 
  -- 
  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 ESPACE & GeoInformation -
  Département Payload Data & 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.

[otb-users] Re: Problem with otbcli_ExtractROI -mode.fit.vect

[remicres]

Hi César,

There is a bug with mode.fit.vect. This will be corrected very soon, but 
right now you can use this workaround:
-Use otbcli_Rasterization to generate a temporary image 
-Use ExtractROI to extract using mode.fit.im over the temporary image

Rémi


Le mercredi 24 janvier 2018 15:36:16 UTC+1, Cesar DB a écrit :
>
> Hi all,
>
> I intend to crop an image (im_large.tif) to the extent of a polygon 
> (mask.shp).
> The function otbcli_ExtractROI fails to do it.
> I tested the function to crop image_large.tif to the extent of a smaller 
> image (im_small.tif).
> This operation succeeds. 
>
> OTB="/home/dc/Documents/OTB-6.2.0-Linux64/bin"
> $OTB/otbcli_ExtractROI -in im_large.tif -mode fit -mode.fit.vect mask.shp 
> -out ./im_crop2shp.tif
> 2018-01-24 15:03:52 (FATAL): itk::ERROR: Failed to open GDALDataset file 
> im_large.tif : 
>
> $OTB/otbcli_ExtractROI -in im_large.tif -mode fit -mode.fit.im 
> im_small.tif -out ./im_crop2im.tif
> Writing ./im_crop2im.tif...: 100% 
> [**] (0.01 seconds)
> Output parameters value:
> startx: 3
> starty: 5
> sizex: 5
> sizey: 4
>
> Original images are Pléiades', mapprojected and cropped for the example 
> (EPSG:32611).
> I use the binaries of OTB downloaded from the website.
> Simple view of the images and mask is in general_view.png.
>
> Did I do something wrong?
>
> Thanks for any help!
>
> César Deschamps-Berger
>

-- 
-- 
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.