Institutional Repository of Chinese Acad Sci, Inst Automat, Natl Lab Pattern Recognit, Beijing 100190, Peoples R China
Euclidean upgrading from segment lengths: DLT-like algorithm and its variants | |
Shi, Kunfeng; Dong, Qiulei; Wu, Fuchao | |
发表期刊 | IMAGE AND VISION COMPUTING |
2014-02-01 | |
卷号 | 32期号:2页码:155-168 |
文章类型 | Article |
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. |
关键词 | Dlt-like Algorithm Euclidean Upgrading Multi-camera Calibration Segment Lengths Weighted Dlt-like Algorithm |
WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
关键词[WOS] | CAMERA CALIBRATION ; SELF-CALIBRATION ; AUTOCALIBRATION ; OBJECTS |
收录类别 | SCI |
语种 | 英语 |
WOS研究方向 | Computer Science ; Engineering ; Optics |
WOS类目 | Computer Science, Artificial Intelligence ; Computer Science, Software Engineering ; Computer Science, Theory & Methods ; Engineering, Electrical & Electronic ; Optics |
WOS记录号 | WOS:000332905300005 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ia.ac.cn/handle/173211/2983 |
专题 | 模式识别国家重点实验室_机器人视觉 |
通讯作者 | Shi, Kunfeng |
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 |
通讯作者单位 | 模式识别国家重点实验室 |
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. |
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