Geometric calibration of full spherical panoramic ricoh-theta camera

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dc.identifier.uri Aghayari, S. Saadatseresht, Mohammad Omidalizarandi, Mohammad Neumann, Ingo 2019-08-15T09:06:59Z 2019-08-15T09:06:59Z 2017
dc.identifier.citation Aghayari, S.; Saadatseresht, Mohammad; Omidalizarandi, Mohammad; Neumann, Ingo: Geometric calibration of full spherical panoramic ricoh-theta camera. In: ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences IV-1/W1 (2017), S. 237-245. DOI:
dc.description.abstract A novel calibration process of RICOH-THETA, full-view fisheye camera, is proposed which has numerous applications as a low cost sensor in different disciplines such as photogrammetry, robotic and machine vision and so on. Ricoh Company developed this camera in 2014 that consists of two lenses and is able to capture the whole surrounding environment in one shot. In this research, each lens is calibrated separately and interior/relative orientation parameters (IOPs and ROPs) of the camera are determined on the basis of designed calibration network on the central and side images captured by the aforementioned lenses. Accordingly, designed calibration network is considered as a free distortion grid and applied to the measured control points in the image space as correction terms by means of bilinear interpolation. By performing corresponding corrections, image coordinates are transformed to the unit sphere as an intermediate space between object space and image space in the form of spherical coordinates. Afterwards, IOPs and EOPs of each lens are determined separately through statistical bundle adjustment procedure based on collinearity condition equations. Subsequently, ROPs of two lenses is computed from both EOPs. Our experiments show that by applying 3*3 free distortion grid, image measurements residuals diminish from 1.5 to 0.25 degrees on aforementioned unit sphere. eng
dc.language.iso eng
dc.publisher Göttingen : Copernicus GmbH
dc.relation.ispartofseries ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences IV-1/W1 (2017)
dc.rights CC BY 3.0 Unported
dc.subject Photogrammetry eng
dc.subject Optics eng
dc.subject Artificial intelligence eng
dc.subject Bundle adjustment eng
dc.subject Lens (optics) eng
dc.subject Pinhole camera model eng
dc.subject Bilinear interpolation eng
dc.subject Omnidirectional camera eng
dc.subject Fisheye lens eng
dc.subject Computer vision eng
dc.subject Mathematics eng
dc.subject Camera auto-calibration eng
dc.subject.classification Konferenzschrift ger
dc.subject.ddc 550 | Geowissenschaften ger
dc.title Geometric calibration of full spherical panoramic ricoh-theta camera eng
dc.type Article
dc.type Text
dc.relation.issn 2194-9050
dc.bibliographicCitation.volume IV-1/W1
dc.bibliographicCitation.firstPage 237
dc.bibliographicCitation.lastPage 245
dc.description.version publishedVersion
tib.accessRights frei zug�nglich

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