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THE PHOTO‐RADIATION METHOD OF TERRESTRIAL PHOTOGRAMMETRY: SOURCES OF ERROR, ACCURACIES AND APPLICATIONS
Author(s) -
Collins B. J.,
Madge B.
Publication year - 1984
Publication title -
the photogrammetric record
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.638
H-Index - 51
eISSN - 1477-9730
pISSN - 0031-868X
DOI - 10.1111/j.1477-9730.1984.tb00483.x
Subject(s) - photogrammetry , levelling , remote sensing , process (computing) , computer science , photography , field (mathematics) , geodetic datum , satellite , geology , geodesy , environmental science , engineering , aerospace engineering , mathematics , art , pure mathematics , visual arts , operating system
This paper analyses the factors affecting the accuracy of the photo‐radiation method of terrestrial photogrammetry which was devised and developed by the outhors whilst engaged in monitoring movement of material on beaches in South Wales . After a brief description of the process, a report is presented on the results of field tests in which distances and differences in level obtained by photo‐radiation, electromagnetic distancing, catenary taping and precise levelling are compared in an attempt to assess the accuracy obtainable using the photogrammetric technique . Thereafter, the field control, the photography and the restitution procedure are in turn examined to identify the chief sources of error . Indications are given of the possible further development of photo‐radiation, especially in the improvement of the restitution necessary to extend the application of the method for such purposes as the monitoring of ground movements and of structural deformations.