Vanishing Point Geometry The Vanishing Point Geometry is a powerful tool. + one Vanishing Point With one Vanishing Point only: the image can be rectified: the ratio base/height is not correct two Vanishing Points With two Vanishing Points (one horizontal, one vertical): the image can be rectified: the ratio base/height is not correct three Vanishing Points With three Vanishing Points: the image can be rectified, the ratio base/height is correct, the orientation can be assessed, both for the original and the rectified image, apart from one unknown scale factor - Camera axis must be very inclined Only WA are suitable
PhotoModeler PhotoModeler by Eos Systems - Canada A project: The inverse camera : from the pictures to the recostruction of the 3-D model Determination camera parameters Low-cost software 1000 $ 8)
PhotoModeler : utilized by non-specialised operators very powerful Very good interface Many options 3D modeling VRML export Rectification Non-metric images Control informations No need to supply approximate value Only one control information is missing: the camera station coordinates
ARPENTEURARPENTEUR by Pierre Drap – Pierre Grussenmeyer (ARchitectural PhotogrammEtry Network Tool for EdUcation and Research). Designed in 1998 by two research teams (GAMSAU-CNRS and ENSAIS-LERGEC) Mainly for Education 9)
The running from the net Thus it can be easily and freely used –from anywhere, by anybody all over the world and –with whatever operating system. www.arpenteur.net. Dedicated to architectural photogrammetry and close range terrestrial photogrammetry, but aerial images (limited to a few Mb) can be also handled.
Photos from a wide range of calibrated cameras –metric –non-metric camera, –digital amateur camera ARPENTEUR permits a better knowledge of basic photogrammetric techniques stereoplotting, image correlation, architectural photogrammetry architectural modelling Output results can then be viewed as text-file, DGN, DXF, VRML file for a further processing with Internet or CAD systems (e.g.: MicroStation, AutoCad).
There are today on the market many good products for any purpose and for any pocket The quality of a system is based not only in the accuracy but anso in the efficiency Photointerpretation Orthophoto Conclusions:
Acknowledgements Thanks to my students who helped me, part of this material is their graduation thesis: Matteo Cinti, Marco Battistelli Paolo Clini Gianluca Gagliardini Stefano Benassi Paolo Margione Loretta Alessandroni Ivan Catini Floriano Capponi Ingrid Luciani