Structure and motion of nonrigid object under perspective projection
文献类型：期刊论文
| 作者 | Wang, Guanghui; Tsui, Hung-Tat; Hu, Zhanyi
|
| 刊名 | PATTERN RECOGNITION LETTERS
 |
| 出版日期 | 2007-03-01 |
| 卷号 | 28期号:4页码:507-515 |
| 关键词 | structure from motion nonrigid object perspective projection weak perspective projection singular value decomposition geometrical optimization |
| 英文摘要 | 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. |
| WOS标题词 | Science & Technology ; Technology |
| 类目[WOS] | Computer Science, Artificial Intelligence |
| 研究领域[WOS] | Computer Science |
| 关键词[WOS] | FACTORIZATION METHOD ; MOVING-OBJECTS ; SHAPE ; RECONSTRUCTION ; CALIBRATION ; RECOVERY |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000243625400012 |
| 公开日期 | 2015-12-24 |
| 源URL | [http://ir.ia.ac.cn/handle/173211/9491]  |
| 专题 | 自动化研究所_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. |
入库方式： OAI收割
来源：自动化研究所
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