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CLC number: TP312; TP217.4

On-line Access: 2018-09-04

Received: 2018-03-20

Revision Accepted: 2018-07-02

Crosschecked: 2018-07-13

Cited: 0

Clicked: 5552

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Xiao-long Shen

http://orcid.org/0000-0002-6481-4287

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Frontiers of Information Technology & Electronic Engineering  2018 Vol.19 No.7 P.889-904

http://doi.org/10.1631/FITEE.1800173


Distributed sparse bundle adjustment algorithm based on three-dimensional point partition and asynchronous communication


Author(s):  Xiao-long Shen, Yong Dou, Steven Mills, David M Eyers, Huan Feng, Zhiyi Huang

Affiliation(s):  College of Computer, National University of Defense Technology, Changsha 410000, China; more

Corresponding email(s):   shenxiaolong11@nudt.edu.cn, yongdou@nudt.edu.cn, steven@cs.otago.ac.nz, dme@cs.otago.ac.nz, fenghuan517@gmail.com

Key Words:  Sparse bundle adjustment, Parallel, Distributed sparse bundle adjustment, Three-dimensional reconstruction, Asynchronous


Xiao-long Shen, Yong Dou, Steven Mills, David M Eyers, Huan Feng, Zhiyi Huang. Distributed sparse bundle adjustment algorithm based on three-dimensional point partition and asynchronous communication[J]. Frontiers of Information Technology & Electronic Engineering, 2018, 19(7): 889-904.

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Abstract: 
sparse bundle adjustment (SBA) is a key but time- and memory-consuming step in three-dimensional (3D) reconstruction. In this paper, we propose a 3D point-based distributed SBA algorithm (DSBA) to improve the speed and scalability of SBA. The algorithm uses an asynchronously distributed sparse bundle adjustment (A-DSBA) to overlap data communication with equation computation. Compared with the synchronous DSBA mechanism (S-DSBA), A-DSBA reduces the running time by 46%. The experimental results on several 3D reconstruction datasets reveal that our distributed algorithm running on eight nodes is up to five times faster than that of the stand-alone parallel SBA. Furthermore, the speedup of the proposed algorithm (running on eight nodes with 48 cores) is up to 41 times that of the serial SBA (running on a single node).

一种基于3D点划分和异步通信的分布式稀疏捆绑调整算法

概要:稀疏捆绑调整(sparse bundle adjustment,SBA)是三维重建的关键步骤,但其速度慢且内存需求高。提出一种基于三维点的分布式SBA算法,以提高SBA速度和可扩展性。该算法利用异步约简通信机制(A-DSBA),将数据通信与方程组求解重叠。与同步DSBA(S-DSBA)相比,A-DSBA运行时间缩短46%。对几个三维重建数据集的实验结果表明,在8个节点上运行的分布式算法比独立并行SBA快5倍。此外,该算法在串行SBA(在单个节点上运行)上的加速比达到41。

关键词:稀疏捆绑调整;并行;分布式稀疏捆绑调整;3D重建;异步

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

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