On 01/19/2014 03:44 PM, Telepinu wrote: > > Dear fellow colleagues, > I have been developing an automated image processing system for > satellite imagery. > So far I developed band registration, and gereferencing using a base > image using feature points, similar to Homologous Points Extraction. > I use OpenCV and GDAL libraries. I use SRTM DEM. > > Currently I succesfully geolocate images; but I want to *orthorectify* > images. > Unfortunately we do not have a sensor model. > I want to learn that: > > * Using Orfeo, can I produce a generic sensor model or shall I > compute them for each image? >
OTB knows about a generic RPC sensor model that can attached to any supported input file format. This is represented by the "geom" file that the "GenerateRPCSensorModel" creates. If your image is "myimage.tif", then put the geom file created by GenerateRPCSensorModel next to it, and rename it "myimage.geom". Then the OTB orthorectification application will recognize it and will be able to orthorectify your image. > * How can I embed RPC file computed by Generate a RPC sensor model? > Is is straight forward? > I assume you mean transforming the RPC coefficient in the ouput ".geom" file into standard GeoTIFF tags. This is possible of course, but there is nothing in OTB to do that right now. This would be a nice feature to add in OTB, since it would make the RPC coefficient computed with OTB available to other software in a standardized way. This shall be quite simple to implement, using the GDAL API (it would then be also available for the NITF format). If you come up with a piece of code that does the job, even a prototype, I hope you can open source it. We could then use it as a support for implementing the functionnality in OTB. On second thought, I think having this as an OTB application would be nice : from any input file in sensor model geometry, we could generate a GeoTIFF/NITF with standard RPC tags, that approximate the sensor model. Julien -- -- 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.
