全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

基于空间共线点的单光心反射折射摄像机标定

DOI: 10.3724/SP.J.1004.2011.01296, PP. 1296-1305

Keywords: 单光心反射折射摄像机,摄像机标定,摄像机内参数,球成像模型

Full-Text   Cite this paper   Add to My Lib

Abstract:

?一条空间直线的单光心反射折射图像是一个二次曲线段,大多数利用直线进行单光心反射折射摄像机标定的方法都需要对直线的像进行二次曲线拟合,曲线拟合的精度严重影响着标定的精度.然而,一条空间直线的像仅占整个二次曲线的一小段,这使得曲线拟合的效果非常差.本文利用空间三个共线点的反射折射投影给出了摄像机内参数的一个非线性约束.当反射镜面为抛物面时,在主点已知的情况下,该约束变为线性约束.如其他参数已知,该约束变为关于有效焦距的多项式约束.由此,本文提出了三种不同条件下的标定算法,算法中无需对直线的像进行二次曲线拟合,无需场景的任何信息,标定精度较高.实验验证了算法的有效性.

References

[1]  Swaminathan R, Grossberg M D, Nayar S. Non-single viewpoint catadioptric cameras: geometry and analysis. International Journal of Computer Vision, 2006, 66(3): 211-229
[2]  Geyer C, Daniilidis K. Catadioptric projective geometry. International Journal of Computer Vision, 2001, 45(3): 223-243
[3]  Scaramuzza D, Martinelli A, Siegwart R. A flexible technique for accurate omnidirectional camera calibration and structure from motion. In: Proceedings of the IEEE International Conference on Computer Vision Systems. Washington D.C., USA: IEEE, 2006. 45-45
[4]  Sturm P, Ramalingam S. A generic concept for camera calibration. In: Proceedings of the European Conference on Computer Vision. Prague, Czech Republic: Springer, 2004. 1-13
[5]  Kang S B. Catadioptric self-calibration. In: Proceedings of the IEEE Conference on Computer Vision and Pattern Recognition. Hilton Head Island, USA: IEEE, 2000. 201-207
[6]  Geyer C, Daniilidis K. Catadioptric camera calibration. In: Proceedings of the IEEE International Conference on Computer Vision. Kerkyra, Greece: IEEE, 1999. 398-404
[7]  Ying X H, Hu Z Y. Catadioptric camera calibration using geometric invariants, IEEE Transactions on Pattern Analysis and Machine Intelligence, 2004, 26(10): 1260-1271
[8]  Ying X H, Zha H B. Identical projective geometric properties of central catadioptric line images and sphere images with applications to calibration. International Journal of Computer Vision, 2008, 78(1): 89-105
[9]  Deng Xiao-Ming, Wu Fu-Chao, Wu Yi-Hong. An easy calibration method for central catadioptric cameras. Acta Automatica Sinica, 2007, 33(8): 801-808
[10]  Wu Y H, Li Y F, Hu Z Y, Easy calibration for para-catadioptric-like camera. In: Proceedings of the IEEE/RSJ International Conference on Intelligent Robots and Systems. Beijing, China: IEEE, 2006. 5719-5724
[11]  Sturm P, Cheng Z L, Chen P C Y, Poo A N. Focal length calibration from two views: method and analysis of singular cases. Computer Vision and Image Understanding, 2005, 99(1): 58-95
[12]  Yagi Y, Yachida M. Real-time omnidirectional image sensors. International Journal of Computer Vision, 2004, 58(3): 173-207
[13]  Baker S, Nayer S. A theory of single-viewpoint catadioptric image formation. International Journal of Computer Vision, 1999, 35(2): 175-196
[14]  Wu Y H, Hu Z Y. Geometric invariants and applications under catadioptric camera model. In: Proceedings of the 10th IEEE International Conference on Computer Vision. Beijing, China: IEEE, 2005. 1547-1554
[15]  Gasparini S, Sturm P, Barreto J. Plane-based calibration of central catadioptric cameras. In: Proceedings of the 12th IEEE International Conference on Computer Vision. Kyoto, Japan: IEEE, 2009. 1195-1202
[16]  Ramalingam S, Sturm P, Lodha S K. Towards generic self-calibration of central cameras. In: Proceedings of the 6th Workshop on Omnidirectional Vision Camera Networks and Nonclassical Cameras. Beijing, China: IEEE, 2005. 20-27
[17]  Barreto J P, Araujo H. Geometric properties of central catadioptric line images and their application in calibration. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2005, 27(8): 1327-1333
[18]  Geyer C, Daniilidis K. Para catadioptric camera calibration. IEEE Transactions on Pattern Analysis and Machine Intelligence, 2002, 24(5): 687-695
[19]  Wu F C, Duan F Q, Hu Z Y, Wu Y H. A new linear algorithm for calibrating central catadioptric cameras. Pattern Recognition, 2008, 41(10): 3166-3172
[20]  Duan F Q, Wu F C, Hu Z Y. Pose determination and plane measurement using a trapezium. Pattern Recognition Letters, 2008, 29(3): 223-231
[21]  Barreto J P, Araujo H. Fitting conics to paracatadioptric projection of lines. Computer Vision and Image Understanding, 2006, 101(3): 151-165
[22]  Ying X H, Zha H B. Simultaneously calibrating catadioptric camera and detecting line features using Hough transform. In: Proceedings of the IEEE/RSJ International Conference on Intelligent Robots and Systems. Edmonton, Canada: IEEE, 2005. 412-417
[23]  Fitzgibbon A, Pilu M, Fisher R B. Direct least square fitting of ellipses. IEEE Transactions on Pattern Analysis and Machine Intelligence, 1999, 21(5): 476-480

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133