Euclidean upgrading from segment lengths: DLT-like algorithm and its variants
文献类型：期刊论文
| 作者 | Shi, Kunfeng; Dong, Qiulei ; Wu, Fuchao
|
| 刊名 | IMAGE AND VISION COMPUTING
 |
| 出版日期 | 2014-02-01 |
| 卷号 | 32期号:2页码:155-168 |
| 关键词 | DLT-like algorithm Euclidean upgrading Multi-camera calibration Segment lengths Weighted DLT-like algorithm |
| 英文摘要 | In this paper, how to calibrate a fixed multi-camera system and simultaneously achieve a Euclidean reconstruction from a set of segments is addressed. It is well known that only a projective reconstruction could be achieved without any prior information. Here, the known segment lengths are exploited to upgrade the projective reconstruction to a Euclidean reconstruction and simultaneously calibrate the intrinsic and extrinsic camera parameters. At first, a DLT(Direct Linear Transformation)-like algorithm for the Euclidean upgrading from segment lengths is derived in a very simple way. Although the intermediate results in the DLT-like algorithm are essentially equivalent to the quadric of segments (QoS), the DLT-like algorithm is of higher accuracy than the existing linear algorithms derived from the QoS because of a more accurate way to extract the plane at infinity from the intermediate results. Then, to further improve the accuracy of Euclidean upgrading, two weighted DLT-like algorithms are presented by weighting the linear constraint equations in the original DLT-like algorithm. Finally, using the results of these linear algorithms as the initial values, a new weighted nonlinear algorithm for Euclidean upgrading is explored to recover the Euclidean structure more accurately. Extensive experimental results on both the synthetic data and the real image data demonstrate the effectiveness of our proposed algorithms in Euclidean upgrading and multi-camera calibration. (C) 2014 Elsevier B.V. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Computer Science, Artificial Intelligence ; Computer Science, Software Engineering ; Computer Science, Theory & Methods ; Engineering, Electrical & Electronic ; Optics |
| 研究领域[WOS] | Computer Science ; Engineering ; Optics |
| 关键词[WOS] | CAMERA CALIBRATION ; SELF-CALIBRATION ; AUTOCALIBRATION ; OBJECTS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000332905300005 |
| 源URL | [http://ir.ia.ac.cn/handle/173211/2983]  |
| 专题 | 自动化研究所_模式识别国家重点实验室_机器人视觉团队 |
| 作者单位 | Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100190, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shi, Kunfeng,Dong, Qiulei,Wu, Fuchao. Euclidean upgrading from segment lengths: DLT-like algorithm and its variants[J]. IMAGE AND VISION COMPUTING,2014,32(2):155-168. |
| APA | Shi, Kunfeng,Dong, Qiulei,&Wu, Fuchao.(2014).Euclidean upgrading from segment lengths: DLT-like algorithm and its variants.IMAGE AND VISION COMPUTING,32(2),155-168. |
| MLA | Shi, Kunfeng,et al."Euclidean upgrading from segment lengths: DLT-like algorithm and its variants".IMAGE AND VISION COMPUTING 32.2(2014):155-168. |
入库方式： OAI收割
来源：自动化研究所
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