Please use this identifier to cite or link to this item: doi:10.22028/D291-26355
Title: Robust automated multiple view inspection
Author(s): Pizarro, Luis
Mery, Domingo
Delpiano, Rafael
Carrasco, Miguel
Language: English
Year of Publication: 2007
Free key words: uncalibrated images
images matching
sequence tracking
DDC notations: 510 Mathematics
Publikation type: Other
Abstract: Recently, Automated Multiple View Inspection (AMVI) has been developed for automated defect detection of manufactured objects. That framework was successfully implemented for calibrated image sequences. However, it is not easy to implement in industrial environments because the calibration is a difficult and unstable process. To overcome these disadvantages, we propose the robust AMVI strategy which assumes that an unknown affine transformation exists between each pair of uncalibrated images. This transformation is estimated using two complementary robust procedures: a global approximation of the affine mapping is computed by creating candidate correspondences via B-splines and selecting those which better satisfy the epipolar constraint for uncalibrated images. Then, we use this approximation as initial estimate of a robust intensity-based matching approach, which is applied locally on each potential defect. The result that false alarms are discarded, and the defects of an industrial object are actually tracked along the uncalibrated image sequence. The method is successful as shown in our experiments on aluminum die castings.
Link to this record: urn:nbn:de:bsz:291-scidok-47236
Series name: Preprint / Fachrichtung Mathematik, Universität des Saarlandes
Series volume: 192
Date of registration: 15-Mar-2012
Faculty: MI - Fakultät für Mathematik und Informatik
Department: MI - Mathematik
Collections:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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