AUTOMATED 3-D MEASUREMENT USING MULTIPLE CCD CAMERA VIEWS

The goal of automated 3-D measurement of arbitrary objects using photogrammetric methods is a long way from being achieved, but significant progress is being made. However, automated measurement of small objects using inexpensive CCD cameras and frame grabbers is becoming increasingly common. A number of such systems have been developed both for commercial use and for academic research. It is within this latter context that a system to measure objects within a controlled environment has been developed at City University. The objective of the research is not only to produce a flexible measuring system for use in on-line inspection but also to address many of the fundamental problems that hinder 3-D measurement outside a controlled environment. 1. Introduction. The development of fully automated photogrammetric measurement has been a possibility from the advent of electronic camera sensors together with the direct input of image information into computers. However, while it is relatively simple to recognise and locate automatically signalised target images, the complexity of the photogrammetric measurement method and the comparative lack of computing powe