Structure and motion of nonrigid object under perspective projection

CASIA OpenIR > 09年以前成果

	Structure and motion of nonrigid object under perspective projection
	Wang, Guanghui ; Tsui, Hung-Tat ; Hu, Zhanyi
发表期刊	PATTERN RECOGNITION LETTERS
	2007-03-01
卷号	28 期号:4 页码:507-515
文章类型	Article
摘要	The paper focuses on the problem of structure and motion of nonrigid object from image sequence under perspective projection. Many previous methods on this problem utilize the extension technique of SVD factorization based on rank constraint to the tracking matrix, where the 3D shape of nonrigid object is expressed as a weighted combination of a set of shape bases. All these solutions are based on the assumption of Affine camera model. This assumption will become invalid and cause large reconstruction errors when the object is close to the camera. In this paper, we propose two algorithms, namely the linear recursive estimation and the nonlinear optimization, to extend these methods to general perspective camera model. Both algorithms are based on the shape and motion of weak perspective projection. The former one updates the solutions from weak perspective to perspective projection by refining the scalars corresponding to the projective depths recursively. The latter one is based on nonlinear optimization by minimizing the perspective reprojection residuals. Extensive experiments on simulated data and real image sequences are performed to validate the effectiveness of our new algorithms and noticeable improvements over the previous solutions are observed. (c) 2006 Elsevier B.V. All rights reserved.
关键词	Structure From Motion Nonrigid Object Perspective Projection Weak Perspective Projection Singular Value Decomposition Geometrical Optimization
WOS标题词	Science & Technology ; Technology
关键词[WOS]	FACTORIZATION METHOD ; MOVING-OBJECTS ; SHAPE ; RECONSTRUCTION ; CALIBRATION ; RECOVERY
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:000243625400012
引用统计	被引频次：11[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/173211/9491
专题	09年以前成果
作者单位	1.Aviat Univ Airforce, Dept Control Engn, Changchun 130022, Peoples R China 2.Chinese Univ Hong Kong, Dept Elect Engn, Shatin, Hong Kong, Peoples R China 3.Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100080, Peoples R China
推荐引用方式 GB/T 7714	Wang, Guanghui,Tsui, Hung-Tat,Hu, Zhanyi. Structure and motion of nonrigid object under perspective projection[J]. PATTERN RECOGNITION LETTERS,2007,28(4):507-515.
APA	Wang, Guanghui,Tsui, Hung-Tat,&Hu, Zhanyi.(2007).Structure and motion of nonrigid object under perspective projection.PATTERN RECOGNITION LETTERS,28(4),507-515.
MLA	Wang, Guanghui,et al."Structure and motion of nonrigid object under perspective projection".PATTERN RECOGNITION LETTERS 28.4(2007):507-515.