Rapid 3D measurement using digital video cameras

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dc.contributor.advisorSchreve, K.
dc.contributor.authorVan der Merwe, Willem Johannesen_ZA
dc.contributor.otherUniversity of Stellenbosch. Faculty of Engineering. Dept. of Mechanical and Mechatronic Engineering.
dc.date.accessioned2008-06-23T13:54:26Zen_ZA
dc.date.accessioned2010-06-01T08:29:55Z
dc.date.available2008-06-23T13:54:26Zen_ZA
dc.date.available2010-06-01T08:29:55Z
dc.date.issued2008-03en_ZA
dc.descriptionThesis (MScEng (Mechanical and Mechatronic Engineering))--University of Stellenbosch, 2008.
dc.description.abstractA rapid measurement system is implemented using two digital video cameras, presenting a faster and less expensive solution to certain metrology problems. The cameras are calibrated from one stereo image-pair of a 3D calibration grid that allows an immediate assessment of the achievable metric accuracy of the system. Three different methods, using either laser tracking or structured light patterns, were developed and employed to solve the coordinate extraction and correspondence matching problems. Different image processing techniques were used to speed up the entire measurement process. All software development was accomplished using only freely distributed software packages. The system achieves calibration in less than a minute and accumulates point correspondences at 12 frames per second. Accuracies of greater than 0.4 mm are achieved for a 235 x 190 x 95 mm measurement volume using a single pair of images with 640 x 480 pixel resolution each.en_ZA
dc.identifier.urihttp://hdl.handle.net/10019.1/1658
dc.language.isoenen_ZA
dc.publisherStellenbosch : University of Stellenbosch
dc.rights.holderUniversity of Stellenbosch
dc.subjectStereo-visionen_ZA
dc.subjectMetrologyen_ZA
dc.subjectRapiden_ZA
dc.subjectDigital video-camerasen_ZA
dc.subjectDissertations -- Mechatronic engineeringen
dc.subjectTheses -- Mechatronic engineeringen
dc.subjectOptical measurementsen
dc.subjectDigital video tape recorders -- Calibrationen
dc.titleRapid 3D measurement using digital video camerasen_ZA
dc.typeThesisen_ZA
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