期刊名称：ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences
印刷版ISSN：2194-9042
电子版ISSN：2194-9050
出版年度：2001
卷号：XXXIV-5/C7
出版社：Copernicus Publications
摘要：It is well know that it is possible to use the vanishing point geometry to assess the orientation parameters of the photographic image. Here we propose a numerical or graphical procedure to estimate such parameters, assuming that in the imaged object are present planar surfaces, straight-line edges, and right angles. In addition, by means of the same estimated parameters, it is possible to project the same image onto a selected plane say to rectify the image. The advantages are that non-metric images, taken from archives or books also, provided a good geometry and quality, are suitable for the task. From one side the role of the classical line photogrammetry is taken more and more over by laser scanning, and on the other side, this simplified procedure enables the researcher to use photogrammetric techniques for stereoscopy and interpretation, thematic mapping, research. The convergent non- stereoscopic images rectified with digital photogrammetric techniques, are then made suitable for stereoscopy. In fact the rectification corrects for tilt displacement and not for relief displacement, but it is just relief displacement that enables stereoscopy. Some examples of stereoplotting and photo-interpretation with digitally rectified photographs are shown
