Salamat! Never expected such quick replies!
A few more details: Camera: Kodak Pro DCS 14N digital SLR camera using a 19-35mm Tamron zoom lens set at 19mm focal length, 13.5 megapixel resolution (4,500 x 3,000 pixels). Images are in Kodak DCR format. Converting to tif before export to GRASS more than double the size. I have the following parameters for each image: FILENAME IMAGE NUMBER DATE TIME GPS STATUS LATITUDE LONGITUDE ALTITUDE ISO SPEED APERTURE SHUTTER FOCAL LENGTH > unless you use a brute force approach with > the orthorectified Quickbird imagery, i.e. at least 100 control points > per image and the strongest rubbersheeting method available. I think I'd go this route as a last resort, I have approximately 800 images to rectify. > > http://grass.gdf-hannover.de/wiki/Orthorectification_digital_camera Thanks for this one >> http://ojs.info.gscc.osaka-cu.ac.jp/IJG/index.php/IJG/article/view/103/42 and this one! We'll keep you posted as I do this. maning On Sat, 2008-01-05 at 14:44 +0100, Vincent BAIN wrote: > Merci ! > I'll try it soon... > > > Le samedi 05 janvier 2008 à 14:21 +0100, Markus Neteler a écrit : > > On Jan 5, 2008 1:56 PM, Vincent BAIN <[EMAIL PROTECTED]> wrote: > > > > > > 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 ? > > > > OK, I have added my draft recipe here: > > http://grass.gdf-hannover.de/wiki/Orthorectification_digital_camera > > > > Feel free to improve the page. > > > > 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
