Hi, I would go for GeoTiffs. Store the GCPs inside the Geotiffs (via for example gdal_translate -gcp ...) and when needed, perform the warping (gdalwarp ...).
I've no idea other tools support this gcp feature. Kris -------- Original-Nachricht -------- > Datum: Mon, 11 Jul 2011 23:27:14 -0700 > Von: Alex Mandel <[email protected]> > An: [email protected] > Betreff: Re: [Qgis-user] use raster + GCP points + ?? as data > On 07/11/2011 10:30 PM, Richard Duivenvoorde wrote: > > Hi all, > > > > I have these pile of scanned old maps and can georeference them with the > > good working georeferencer plugin in qgis. > > > > But do NOT want to really warp the image. Why should we want to store > > TWO huge rasters, maybe loosing 'data' contained in the 'original'? > > > > So my question: is it possible (for Qgis, but preferebly also with other > > tools (wms's) to load data from the original raster, probably > > accompanied with a txt file with GCP points (or maybe some other format > > containing both gcp points and projection/transformation information)? > > > > Is there some 'common' way for the the world of gis? > > > > Thanks for any thoughts, > > > > Richard Duivenvoorde > > > A world file is the common way. It describes the coordinates of the > corners, how many units per pixel and what skew if any. See the > wikipedia page for details. > > I believe the georef plugin can save the a world file for you. > > Thanks, > Alex > > _______________________________________________ > Qgis-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/qgis-user -- Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de _______________________________________________ Qgis-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/qgis-user
