A Direct Method to Self-Calibrate a Surveillance Camera by Observing a Walking Pedestrian
A Direct Method to Self-Calibrate a Surveillance Camera by Observing a Walking Pedestrian
复制标题
通过观察步行行人来自校准监控摄像头的直接方法
DOI:
10.1109/dicta.2009.49
复制
发表时间:
2009
期刊:
影响因子:
--
通讯作者:
Jian Zhang
中科院分区:
文献类型:
--
作者:
Worapan Kusakunniran;Hongdong Li;Jian Zhang
Recent efforts show that it is possible to calibrate a surveillance camera simply from observing a walking human. This procedure can be seen as a special application of the camera self-calibration technique. Several methods have been proposed along this line, but most of them have certain restrictions, such as require the human walking at a constant speed, or require two orthogonal lines marked on the ground, etc. This has hindered their applicability. In this paper we propose a new method that removes most of these restrictions. By clever uses of the cross-ratio relationship in projective geometry, our method shows it is possible to directly estimate a full 3x4 camera projection matrix without first decomposing it into physical parameters like focal-length, optical center, etc. Extensive experiments on real data show our algorithm performs well in real situations.
DOI:
--
发表时间:
1998
期刊:
--
影响因子:
--
作者:
E. Trucco;A. Verri
通讯作者:
E. Trucco;A. Verri
DOI:
10.1109/34.888718
发表时间:
2000-11-01
影响因子:
23.6
作者:
Zhang, ZY
通讯作者:
Zhang, ZY
DOI:
10.1109/jra.1987.1087109
发表时间:
1987-08-01
期刊:
IEEE JOURNAL OF ROBOTICS AND AUTOMATION
影响因子:
--
作者:
TSAI, RY
通讯作者:
TSAI, RY