Le samedi 05 janvier 2008 à 13:44 +0100, Markus Neteler a écrit : > On Jan 5, 2008 1:35 PM, Markus Metz <[EMAIL PROTECTED]> wrote: > ... > > Anyway, digital cameras are apparently not supported in i.ortho.photo. > > Why this? I did so, using a handheld digital camera: > > M. Neteler, D. Grasso, I. Michelazzi, L. Miori, S. Merler, and > C. Furlanello, 2005. An integrated toolbox for image registration, fusion > and classification. International Journal of Geoinformatics. Special Issue > on FOSS/GRASS 2004 & GIS-IDEAS 2004, 1(1), pp. 51-61, March 2005. > PDF: > http://ojs.info.gscc.osaka-cu.ac.jp/IJG/index.php/IJG/article/view/103/42 > > > I heard of some tools that can add fiducial marks to digital photographs > > You can use the photo corners and calculate things yourself using > "jhead" or other tools.
You mean pointing corners of the image as four fiducials, then assigning them the dimensions of the sensor, in a coordinate system centered on the estimated principal point ? If you do that with i.ortho.photo what value would you give to the focal length, the one provided by the exif ? Vincent > > Markus > _______________________________________________ > grass-user mailing list > [email protected] > http://lists.osgeo.org/mailman/listinfo/grass-user > _______________________________________________ grass-user mailing list [email protected] http://lists.osgeo.org/mailman/listinfo/grass-user
