3D data, extracted from stereoscopic images, are considered as the main input for
digital modeling and GIS database construction. These data are usually collected by using
professional software. This kind of tools, is difficult to use by the non-sp
ecialists.
In this study, we propose to use the free academic photogrammetric softwares that
are available in the internet, to achieve interior and exterior orientations of images. But,
before this step, these softwares must be evaluated. In our research, we applied a software
developed by an academic photogrammetric society. The software was applied to calculate
the orientation parameters of a stereoscopic pair of aerial photos taken for an urban area.
After that, the results were evaluated by the help of a professional photogrammetric
software. Finally, a group of stereoscopic analysis was done by using the academic
software. Again, the results were evaluated by the help of a professional software.
