Modelling Extreme Wide-Angle Lens Cameras

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dc.contributor.authorLichti, Derek D
dc.contributor.authorTredoux, Wynand
dc.contributor.authorMaalek, Reza
dc.contributor.authorHelmholz, Petra
dc.contributor.authorRadovanovic, Robert
dc.date.accessioned2022-02-03T21:03:54Z
dc.date.available2022-02-03T21:03:54Z
dc.date.issued2021-12-01
dc.description.abstractThe use of consumer cameras fitted with extreme wide angle (EWA) lenses for photogrammetric measurement is increasing. Conventional modelling of EWA systems relies on the pinhole camera model and up to five radial lens distortion terms. Aiming to reduce model complexity, this paper reports an investigation into an alternate approach using fisheye lens models for EWA systems, despite them not falling strictly into to the fisheye category. Four fisheye models were tested on four different cameras under laboratory conditions. The self-calibration results show superior model fit for all fisheye models over the pinhole plus radial model in terms of residual RMS. The number radial distortion of terms required for the fisheye models was lower in all cases, so model complexity was reduced. Independent assessment revealed very similar 3D reconstruction accuracy for all models. The results suggest that fisheye modelling is an advantageous alternative for EWA lens systems.en_US
dc.description.grantingagencyNatural Sciences and Engineering Research Council (NSERC)en_US
dc.identifier.citationLichti, D. D., Tredoux, W., Maalek, R., Helmholz, P., and Radovanovic, R. (2021). Modelling extreme wide-angle lens cameras. Photogrammetric Record, 36(176), 360-380. https://doi.org/10.1111/phor.12389en_US
dc.identifier.doihttps://doi.org/10.1111/phor.12389en_US
dc.identifier.grantnumberCRDPJ 505367-16 and RGPIN/03775-2018en_US
dc.identifier.issn0031-868X
dc.identifier.issn1477-9730
dc.identifier.urihttp://hdl.handle.net/1880/114377
dc.identifier.urihttps://doi.org/10.11575/PRISM/46010
dc.language.isoengen_US
dc.publisherWileyen_US
dc.publisher.departmentGeomatics Engineeringen_US
dc.publisher.facultySchulich School of Engineeringen_US
dc.publisher.hasversionacceptedVersionen_US
dc.publisher.institutionUniversity of Calgaryen_US
dc.publisher.institutionKarlsruhe Institute of Technologyen_US
dc.publisher.institutionCurtin Universityen_US
dc.publisher.policyhttps://authorservices.wiley.com/author-resources/Journal-Authors/licensing/self-archiving.htmlen_US
dc.rightsUnless otherwise indicated, this material is protected by copyright and has been made available with authorization from the copyright owner. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.en_US
dc.subjectCamera calibrationen_US
dc.subjectExtreme wide-angle lensesen_US
dc.subjectFisheye lensesen_US
dc.subjectRadial lens distortionen_US
dc.subjectBarrel distortionen_US
dc.titleModelling Extreme Wide-Angle Lens Camerasen_US
dc.typejournal articleen_US
ucalgary.item.requestcopytrueen_US
ucalgary.scholar.levelFacultyen_US
ucalgary.scholar.levelUndergraduateen_US
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