BUILDINGS REGISTRATION UTILIZING DIGITAL CLOSE RANGE PHOTOGRAMMETRY AND GIS TECHNOLOGY

Abstract

Documentation and conservation of historical monuments are becoming inevitable. For a long time, photogrammetry has played a significant role in registering the cultural heritage of nations and peoples. Recent advanced technology has enhanced the use of photogrammetry as a recording tool, enabling more complex representations of objects and moving access to the procedure from the experts to the ordinary users. Nowadays, digital photogrammetric, is one of the most efficient and inexpensive ways. That is carried out to save time, money and manpower.

The main objectives of this thesis are to investigate the impact of different factors affecting the use of digital close range photogrammetry in buildings registration process, as well as to develop a comprehensive procedure for buildings registration utilizing digital close range photogrammetry and GIS technology in terms of flexibility performance, efficiency and economy. The work is divided into two stages; Investigation stage and the stage of buildings registration utilizing digital close range photogrammetry and GIS technology. In the first stage, three study areas have been examined. Several images are captured in the survey laboratory and in the field object spaces using two non-metric digital cameras with a medium resolution. These images differ in characteristics (resolution, angles ...etc). Many factors are investigated to minimize the errors and support the proposed technique. ARC/INFO GIS software package is utilized to convert acquired images into orthogonal images utilizing the coordinates of naturally signalized control points captured by theodolites. These orthogonal images are evaluated and the details are developed. (RMSEs) are calculated and an analysis is performed to test the proposed technique for buildings registration. In the second stage, three faces of Insects Building at the Faculty of Science in Cairo University are chosen to evaluate the developed technique in practice. First, three images are taken according to the investigation stage aspects.