TY - GEN
T1 - Lens distortion correction with a calibration harp
AU - Von Gioi, R. Grompone
AU - Monasse, P.
AU - Morel, J. M.
AU - Tang, Z.
N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].
PY - 2011
Y1 - 2011
N2 - Plumb line lens distortion correction methods permit to avoid numerical compensation between the camera internal and external parameters in global calibration method. Once the distortion has been corrected by a plumb line method, the camera is ensured to transform, up to the distortion precision, 3D straight lines into 2D straight lines, and therefore becomes a pinhole camera. This paper introduces a plumb line method for correcting and evaluating camera lens distortion with high precision. The evaluation criterion is defined as the average standard deviation from straightness of a set of approximately equally spaced straight strings photographed uniformly in all directions by the camera, so that their image crosses the whole camera field. The method uses an easily built "calibration harp," namely a frame on which good quality strings have been tightly stretched to ensure a very high physical straight-ness. Real experiments confirm that our method produces high precision corrections (less than 0.05 pixel), approximating the distortion with a large number of degrees of freedom given by a polynomial model of order eleven. © 2011 IEEE.
AB - Plumb line lens distortion correction methods permit to avoid numerical compensation between the camera internal and external parameters in global calibration method. Once the distortion has been corrected by a plumb line method, the camera is ensured to transform, up to the distortion precision, 3D straight lines into 2D straight lines, and therefore becomes a pinhole camera. This paper introduces a plumb line method for correcting and evaluating camera lens distortion with high precision. The evaluation criterion is defined as the average standard deviation from straightness of a set of approximately equally spaced straight strings photographed uniformly in all directions by the camera, so that their image crosses the whole camera field. The method uses an easily built "calibration harp," namely a frame on which good quality strings have been tightly stretched to ensure a very high physical straight-ness. Real experiments confirm that our method produces high precision corrections (less than 0.05 pixel), approximating the distortion with a large number of degrees of freedom given by a polynomial model of order eleven. © 2011 IEEE.
KW - error compensation
KW - Lens distortion
KW - plumb lines
KW - polynomial model
UR - http://www.scopus.com/inward/record.url?scp=84856303731&partnerID=8YFLogxK
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-84856303731&origin=recordpage
U2 - 10.1109/ICIP.2011.6116626
DO - 10.1109/ICIP.2011.6116626
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 9781457713033
T3 - Proceedings - International Conference on Image Processing, ICIP
SP - 617
EP - 620
BT - ICIP 2011: 2011 18th IEEE International Conference on Image Processing
T2 - 2011 18th IEEE International Conference on Image Processing, ICIP 2011
Y2 - 11 September 2011 through 14 September 2011
ER -