caa a22 4500 467915040 CHVBK 20180406152859.0 cr unu---uuuuu 170328e20060701xx s 000 0 eng 10.1007/s11263-006-5168-1 doi (NATIONALLICENCE)springer-10.1007/s11263-006-5168-1 Gennery Donald 1881 Alpha Road #17, 91208, Glendale, CA, USA aut Generalized Camera Calibration Including Fish-Eye Lenses [Elektronische Daten] [Donald Gennery] A method is described for accurately calibrating cameras including radial lens distortion, by using known points such as those measured from a calibration fixture. Both the intrinsic and extrinsic parameters are calibrated in a single least-squares adjustment, but provision is made for including old values of the intrinsic parameters in the adjustment. The distortion terms are relative to the optical axis, which is included in the model so that it does not have to be orthogonal to the image sensor plane. These distortion terms represent corrections to the basic lens model, which is a generalization that includes the perspective projection and the ideal fish-eye lens as special cases. The position of the entrance pupil point as a function of off-axis angle also is included in the model. (The complete camera model including all of these effects often is called CAHVORE.) A way of adding decentering distortion also is described. A priori standard deviations can be used to apply weight to given initial approximations (which can be zero) for the distortion terms, for the difference between the optical axis and the perpendicular to the sensor plane, and for the terms representing movement of the entrance pupil, so that the solution for these is well determined when there is insufficient information in the calibration data. For the other parameters, initial approximations needed for the nonlinear least-squares adjustment are obtained in a simple manner from the calibration data and other known information. (Weight can be given to these also, if desired.) Outliers among the calibration points that disagree excessively with the other data are removed by means of automatic editing based on analysis of the residuals. The use of the camera model also is described, including partial derivatives for propagating both from object space to image space and vice versa. These methods were used to calibrate the cameras on the Mars Exploration Rovers. Springer Science + Business Media, LLC, 2006 camera calibration nationallicence lens distortion nationallicence fish-eye lens nationallicence entrance pupil nationallicence camera model nationallicence CAHVOR nationallicence CAHVORE nationallicence Mars rovers nationallicence International Journal of Computer Vision Kluwer Academic Publishers 68/3(2006-07-01), 239-266 0920-5691 68:3<239 2006 68 11263 https://doi.org/10.1007/s11263-006-5168-1 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s11263-006-5168-1 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Gennery Donald 1881 Alpha Road #17, 91208, Glendale, CA, USA aut NATIONALLICENCE 773 0- International Journal of Computer Vision Kluwer Academic Publishers 68/3(2006-07-01), 239-266 0920-5691 68:3<239 2006 68 11263 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer