[GRASS-user] rectifying digital images

[Markus Neteler]

On Jan 5, 2008 1:35 PM, Markus Metz <markus_metz at gmx.de> 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.

Markus