the geoid file can be download here: https://git.orfeo-toolbox.org/otb-data.git/blob/HEAD:/Input/DEM/egm96.grd
<https://git.orfeo-toolbox.org/otb-data.git/blob/HEAD:/Input/DEM/egm96.grd> You need also the .hdr file: https://git.orfeo-toolbox.org/otb-data.git/blob/HEAD:/Input/DEM/egm96.grd.hdr The URL you've got point to the mercurial repository which is not available anymore. Let me know if you find this adresse in the OTB documentation or website, in this case it should be updated. Regards, 2017-09-12 12:56 GMT+02:00 preet.balaji20 <[email protected]>: > Hi Julien, > > Thanks very much for your suggestions. I am trying to download geoid > files, do you know from where I can download the files? I tried this - > http://hg.orfeo-toolbox.org/OTB-Data/raw-file/ > 404aa6e4b3e0/Input/DEM/egm96.grd, but the page is not working. > > Thanks and Regards > Preethi > > > On Tuesday, September 12, 2017 at 10:17:33 AM UTC+1, Julien Michel wrote: > >> Also note that you should change the default -opt.gridspacing value (in >> meters) to something like twice the resolution of your DEM or so >> (otherwise ortho-recitification will take forever to complete). >> >> Regards, >> >> Julien >> >> Le 12/09/2017 à 11:08, Julien Michel a écrit : >> > Hi Preethi, >> > >> > First of all, you do not need to use the DEMConvert application >> > anymore. Simply put DEM.tif in a directory and set it as -elev.dem >> > parameter. Second, depending on your DEM convention, you also need to >> > set a geoid file to get accurate results. >> > >> > Last, the output image is not supposed to be in the same SRS as the >> > DEM. In fact the output SRS is tuned with the -map parameter. By >> > default it will use the closest UTM zone. If you want to use a >> > specific SRS, you can set it by its EPSG code : -map epsg -map.epsg >> 2157 >> > >> > Hope that helps, >> > >> > Regards, >> > >> > Julien >> > >> > >> > Le 12/09/2017 à 11:08, preet.balaji20 a écrit : >> >> >> >> >> >> Dear all, >> >> >> >> I am trying to orthorectify Sentinel-1 GRD Radiometric calibrated >> >> C-band SAR image using EU digital elevation model of 30m resolution >> >> using the command in Linux terminal >> >> >> >> *otbcli_OrthoRectification -io.in SARimage.tif -io.out >> >> outputimage.tif -elev.dem /DEMdirectory. * >> >> >> >> The DEM used was reprojected to Irish Transverse Mercator – epsg:2157. >> >> >> >> The DEM.tif file was converted to general raster file compatible with >> >> the OTB DEM handling using the DEMconvert option. Three files with >> >> the extensions .ras, .geom and .omd were saved in the dem directory - >> >> this directory was given as input for orthorectification >> >> >> >> >> >> *DEM file information:* >> >> >> >> Size is 9663, 7541 >> >> >> >> Coordinate System is: >> >> >> >> PROJCS["IRENET95 / Irish Transverse Mercator", >> >> >> >> GEOGCS["IRENET95", >> >> >> >> DATUM["IRENET95", >> >> >> >> SPHEROID["GRS 1980",6378137,298.2572221010002, >> >> >> >> AUTHORITY["EPSG","7019"]], >> >> >> >> TOWGS84[0,0,0,0,0,0,0], >> >> >> >> AUTHORITY["EPSG","6173"]], >> >> >> >> PRIMEM["Greenwich",0], >> >> >> >> UNIT["degree",0.0174532925199433], >> >> >> >> AUTHORITY["EPSG","4173"]], >> >> >> >> PROJECTION["Transverse_Mercator"], >> >> >> >> PARAMETER["latitude_of_origin",53.5], >> >> >> >> PARAMETER["central_meridian",-8], >> >> >> >> PARAMETER["scale_factor",0.99982], >> >> >> >> PARAMETER["false_easting",600000], >> >> >> >> PARAMETER["false_northing",750000], >> >> >> >> UNIT["metre",1, >> >> >> >> AUTHORITY["EPSG","9001"]], >> >> >> >> AUTHORITY["EPSG","2157"]] >> >> >> >> Origin = (419504.356750835664570,709074.848424524534494) >> >> >> >> Pixel Size = (25.288322889600000,-25.288322889600000) >> >> >> >> Metadata: >> >> >> >> AREA_OR_POINT=Area >> >> >> >> Image Structure Metadata: >> >> >> >> INTERLEAVE=BAND >> >> >> >> Corner Coordinates: >> >> >> >> Upper Left ( 419504.357, 709074.848) ( 10d41'44.00"W, 53d 6' 6.05"N) >> >> >> >> Lower Left ( 419504.357, 518375.606) ( 10d35'37.23"W, 51d23'21.80"N) >> >> >> >> Upper Right ( 663865.421, 709074.848) ( 7d 2'44.58"W, 53d 7'42.18"N) >> >> >> >> Lower Right ( 663865.421, 518375.606) ( 7d 4'54.58"W, 51d24'52.20"N) >> >> >> >> Center ( 541684.889, 613725.227) ( 8d51'16.06"W, 52d16'19.64"N) >> >> >> >> Band 1 Block=9663x1 Type=Float32, ColorInterp=Gray >> >> >> >> NoData Value=0 >> >> >> >> >> >> It seems that the DEM is not being considered as an input here. The >> >> ouput image has the default projection – UTM zone 29. But it is >> >> supposed to consider the projection of the input DEM which is ITM >> >> (2157). Please find the attached orthorectified image obtained using >> >> the DEM files. >> >> >> >> The Orthorectification application in OTB version 6.0.0 was also >> >> tried which did not give the desired result. >> >> >> >> Can somebody please help me in understanding what is it that I'm >> >> missing/doing wrong? >> >> >> >> I really appreciate the help. >> >> >> >> Thanks in advance >> >> Preethi >> >> >> >> -- >> >> -- >> >> 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] >> >> <mailto:[email protected]>. >> >> For more options, visit https://groups.google.com/d/optout. >> > >> > >> >> >> -- >> Julien MICHEL >> CNES - DSO/SI/2A >> >> -- > -- > 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. > -- Manuel Grizonnet -- -- 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.
