ďobo-CADzone, true men don't kill coyotes and use AutoCAD…

I wrote a short item about raster rectification issues a month ago. The projective method mentioned at the very end of the article was designated as problematic in Autodesk Raster Design environment so I took some time to clear theoretical things behind that (since I work with Agisoft Photoscan for some time). Well, the Brown’s distortion model clears it all – link on Wikipedia, link on his famous article in 1966.