TY - JOUR
T1 - Distorted pinhole camera modeling and calibration
AU - Juarez-Salazar, Rigoberto
AU - Zheng, Juan
AU - Diaz-Ramirez, Victor H.
N1 - Publisher Copyright:
© 2020 Optical Society of America
PY - 2020/12/20
Y1 - 2020/12/20
N2 - Camera modeling and calibration are essential tasks in modern optics. Conventionally, the pinhole model is adopted with a further extension for lens distortion. However, pinhole and distortion models are mutually dependent; thus, the standard approach induces systematic camera calibration errors. This research presents a unifying distorted pinhole camera model that includes a telecentric, distortion-free pinhole, and radial lens distortion as particular cases. An iterative calibration method based on the derived distorted pinhole model is proposed, and experimental evaluation by calibrating a camera with high radial distortion is performed. The calibration results are compared with the standard and fisheye models using a well-known commercial camera calibrator software. The proposed method outperforms the standard model and achieves accuracy comparable to the fisheye model, and the proposed approach is a versatile and accurate tool for diverse optical metrology applications.
AB - Camera modeling and calibration are essential tasks in modern optics. Conventionally, the pinhole model is adopted with a further extension for lens distortion. However, pinhole and distortion models are mutually dependent; thus, the standard approach induces systematic camera calibration errors. This research presents a unifying distorted pinhole camera model that includes a telecentric, distortion-free pinhole, and radial lens distortion as particular cases. An iterative calibration method based on the derived distorted pinhole model is proposed, and experimental evaluation by calibrating a camera with high radial distortion is performed. The calibration results are compared with the standard and fisheye models using a well-known commercial camera calibrator software. The proposed method outperforms the standard model and achieves accuracy comparable to the fisheye model, and the proposed approach is a versatile and accurate tool for diverse optical metrology applications.
UR - http://www.scopus.com/inward/record.url?scp=85098185661&partnerID=8YFLogxK
U2 - 10.1364/AO.412159
DO - 10.1364/AO.412159
M3 - Artículo
C2 - 33362054
AN - SCOPUS:85098185661
SN - 1559-128X
VL - 59
SP - 11310
EP - 11318
JO - Applied Optics
JF - Applied Optics
IS - 36
ER -