Calibration of an active stereoscopic imaging system

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)


This paper describes the use of a photogrammetric technique for the calibration of a coordinate imaging system based on stereoscopic TV cameras and structured lighting. Experiments with this system showed that the generated 3-D coordinate images were prone to inaccuracies caused by optical distortions in lenses and also by general geometrical distortions due to positioning of the components of the vision system in three-dimensional space. This necessitated the use of a powerful calibration method which took account of all potential sources of error. A particular photogrammetric technique known as direct linear transformation was used for this purpose, resulting in a worst case accuracy of about 4 mm at a range of 1.8 - 2.2 meters. A discussion justifying this choice of calibration technique is presented together with the complete procedure used. The results obtained are analyzed and possible methods for further improvements in the accuracy of the coordinate data are discussed.

Original languageEnglish
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsDonald J. Svetkoff
PublisherPubl by Int Soc for Optical Engineering
Number of pages13
ISBN (Print)0819407518
Publication statusPublished - 1992
EventOptics, Illumination, and Image Sensing for Machine Vision VI - Boston, MA, USA
Duration: 14 Nov 199115 Nov 1991


ConferenceOptics, Illumination, and Image Sensing for Machine Vision VI
CityBoston, MA, USA


Dive into the research topics of 'Calibration of an active stereoscopic imaging system'. Together they form a unique fingerprint.

Cite this