A calibration method for paracatadioptric camera from sphere images

	A calibration method for paracatadioptric camera from sphere images
	Duan, Huixian; Wu, Yihong
发表期刊	PATTERN RECOGNITION LETTERS
	2012-04-15
卷号	33 期号:6 页码:677-684
文章类型	Article
摘要	For paracatadioptric camera, the estimation of intrinsic parameters from sphere images is still an open and challenging problem. In this paper, we propose a calibration method for paracatadioptric camera based on sphere images, which only requires that the projected contour of parabolic mirror is visible on the image plane in one view. We have found that, under central catadioptric camera, a sphere is projected to two conics on the image plane, which are defined as a pair of antipodal sphere images. The conic that is visible on the image plane is called the sphere image, while the other invisible conic is called the antipodal sphere image. In the other aspect, according to the image formation of central cataclioptric camera, these two conics can also be considered as the projections of two parallel circles on the viewing sphere by a virtue camera. That is to say, if three pairs of antipodal sphere images are known, central catadioptric camera can be directly calibrated by the calibration method based on two parallel circles. Therefore, the problem of calibrating central catadioptric camera is transferred to the estimations of sphere images and their antipodal sphere images. Based on this idea, we first initialize the intrinsic parameters of the camera by the projected contour of parabolic mirror, and use them to initialize the antipodal sphere images. Next, we study properties of several pairs of antipodal sphere images under paracatadioptric camera. Then, these properties are used to optimize sphere images and their antipodal sphere images, so as to calibrate the paracatadioptric camera. Experimental results on both simulated and real image data have demonstrated the effectiveness of our method. (C) 2011 Elsevier B.V. All rights reserved.
关键词	Paracatadioptric Camera Calibration Sphere Images Antipodal Sphere Images
WOS标题词	Science & Technology ; Technology
收录类别	SCI
语种	英语
WOS研究方向	Computer Science
WOS类目	Computer Science, Artificial Intelligence
WOS记录号	WOS:000301999500001
引用统计	被引频次：26[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ia.ac.cn/handle/173211/2994
专题	多模态人工智能系统全国重点实验室_机器人视觉
作者单位	Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100190, Peoples R China
第一作者单位	模式识别国家重点实验室
推荐引用方式 GB/T 7714	Duan, Huixian,Wu, Yihong. A calibration method for paracatadioptric camera from sphere images[J]. PATTERN RECOGNITION LETTERS,2012,33(6):677-684.
APA	Duan, Huixian,&Wu, Yihong.(2012).A calibration method for paracatadioptric camera from sphere images.PATTERN RECOGNITION LETTERS,33(6),677-684.
MLA	Duan, Huixian,et al."A calibration method for paracatadioptric camera from sphere images".PATTERN RECOGNITION LETTERS 33.6(2012):677-684.