3-DIMENSIONAL COMPUTER GRAPHIC MODELS BY ANALYTICAL PHOTOGRAMMETRY

This paper indicates the advantages afforded when an analytical plotter is interfaced with a three dimensional CAD system. Problems associated with combining various data sources (ground survey, aerial and close range photography) of differing quality will be discussed, together with compromises required to idealize the geometry of the real would enforced by a CAD system. The paper is illustrated by some of the commercial projects undertaken by the Engineering Photogrammetry Unit at City University. Applications of particular financial significance include modelling of petro-chemical plant for different purposes and to various levels of derail and accuracy.