Re: [GRASS-user] Using GRASS to ortho-rectify satellite imagery
On Wed, Jul 1, 2009 at 8:10 PM, Mike Williswilli...@gmail.com wrote: Hi can anyone quickly tell me if it is possible to orthorectify satellite imagery using GRASS? It is not yet possible but an Italian researcher is luckily working on that: http://lists.osgeo.org/pipermail/grass-dev/2009-June/044422.html Markus ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Using GRASS to ortho-rectify satellite imagery
Mike Willis wrote: Hi can anyone quickly tell me if it is possible to orthorectify satellite imagery using GRASS? Cheers! Mike Willis what about i.rectify - Rectifies an image by computing a coordinate transformation for each pixel in the image based on the control points. ? http://grass.osgeo.org/grass64/manuals/html64_user/i.rectify.html best regards helli Maybe - but my real purpose is to remove distortions caused by topography. Plain rectification will not achieve that. I looked at orthophoto but a camera model is required (air photos). I am needing to do satellite images (usually, but not always ASTER). Mike Maybe this info will help http://josef.fsv.cvut.cz/WIKI/grass-osgeo/index.php/Image_processing Alex ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
Re: [GRASS-user] Using GRASS to ortho-rectify satellite imagery
I looked in there for i.topo On Wed, Jul 1, 2009 at 3:06 PM, Alex Mandeltech_...@wildintellect.com wrote: Mike Willis wrote: Hi can anyone quickly tell me if it is possible to orthorectify satellite imagery using GRASS? Cheers! Mike Willis what about i.rectify - Rectifies an image by computing a coordinate transformation for each pixel in the image based on the control points. ? http://grass.osgeo.org/grass64/manuals/html64_user/i.rectify.html best regards helli Maybe - but my real purpose is to remove distortions caused by topography. Plain rectification will not achieve that. I looked at orthophoto but a camera model is required (air photos). I am needing to do satellite images (usually, but not always ASTER). Mike Maybe this info will help http://josef.fsv.cvut.cz/WIKI/grass-osgeo/index.php/Image_processing Alex I looked further from the line Minnaert or other corrections with i.topo.corr (from GRASS AddOns) but couldn't see any further reference to i.topo.corr (or rectify3) etc. Mike ___ grass-user mailing list grass-user@lists.osgeo.org http://lists.osgeo.org/mailman/listinfo/grass-user
