CONICS-BASED STEREO, MOTION ESTIMATION, AND POSE DETERMINATION

CASIA OpenIR > 09年以前成果

	CONICS-BASED STEREO, MOTION ESTIMATION, AND POSE DETERMINATION
	SONG, DM
发表期刊	INTERNATIONAL JOURNAL OF COMPUTER VISION
	1993-02-01
卷号	10 期号:1 页码:7-25
文章类型	Article
摘要	Stereo vision, motion and structure parameter estimation, and pose determination are three important problems in 3-D computer vision. The first step in all of these problems is to choose and to extract primitives and their features in images. In most of the previous work, people usually use edge points or straight line segments as primitives and their local properties as features. Few methods have been presented in the literature using more compact primitives and their global features. This article presents an approach using conics as primitives. For stereo vision, a closed-form solution is provided for both establishing the correspondence of conics in images and the reconstruction of conics in space. With this method, the correspondence is uniquely determined and the reconstruction is global. It is shown that the method can be extended for higher degree (degree greater-than-or-equal-to 3) planar curves. For motion and structure parameter estimation, it is shown that, in general, two sequential images of at least three conics are needed in order to determine the camera motion. A complicated nonlinear system must be solved in this case. In particular, if we are given two images of a pair of coplanar conics, a closed-form solution of camera motion is presented. In a CAD-based vision system, the object models are available, and this makes it possible to recognize 3-D objects and to determine their poses from a single image. For pose determination, it is shown that if there exist two conics on the surface of an object, the object's pose can be determined by an efficient one-dimensional search. In particular, if two conics are coplanar, a closed-form solution of the object's pose is presented.
WOS标题词	Science & Technology ; Technology
关键词[WOS]	RIGID PLANAR PATCH ; LINE CORRESPONDENCES ; 3-D OBJECTS ; PARAMETERS ; ALGORITHM ; VISION ; REPRESENTATIONS ; UNIQUENESS ; SURFACES ; CURVES
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:A1993LP38400001
引用统计	被引频次：19[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/173211/21880
专题	09年以前成果
作者单位	CHINESE ACAD SCI,INST AUTOMAT,NATL PATTERN RECOGNIT LAB,BEIJING 100080,PEOPLES R CHINA
推荐引用方式 GB/T 7714	SONG, DM. CONICS-BASED STEREO, MOTION ESTIMATION, AND POSE DETERMINATION[J]. INTERNATIONAL JOURNAL OF COMPUTER VISION,1993,10(1):7-25.
APA	SONG, DM.(1993).CONICS-BASED STEREO, MOTION ESTIMATION, AND POSE DETERMINATION.INTERNATIONAL JOURNAL OF COMPUTER VISION,10(1),7-25.
MLA	SONG, DM."CONICS-BASED STEREO, MOTION ESTIMATION, AND POSE DETERMINATION".INTERNATIONAL JOURNAL OF COMPUTER VISION 10.1(1993):7-25.