基于InfiniBand集群并行全景图拼接系统设计  

Design of parallel panoramic stitching system based on InfiniBand cluster

作　　者：陆应通 李文强[1] 吴志红[1] LU Ying-Tong LI Wen-Qiang WU Zhi-Hong(National Key Laboratory of Fundamental Science on Synthetic Vision, College of Computer Science, Sichuan University, Chengdu 610065, China)

机构地区：[1]四川大学计算机学院视觉合成图形图像国防重点学科实验室,成都610065

出　　处：《四川大学学报（自然科学版）》2016年第6期1247-1254,共8页Journal of Sichuan University(Natural Science Edition)

基　　金：国家高技术研究发展计划(2015AA016405);国家自然科学基金(61472261)

摘　　要：全景图拼接是通过对序列图像进行拼接,从而实现对场景全方位环视的技术,是计算机视觉和图像处理的研究热点.针对大规模高分辨率的序列图像拼接,单计算机的拼接效率已经难以满足实际应用需求的问题,提出了一种基于InfiniBand高速网络通信的多机并行架构实现全景图并行拼接的解决方案.首先,对全景图拼接的关键步骤进行并行性分析,将全景图拼接尽可能划分成细粒度和高并行度的子任务;然后,通过并行架构中的控制节点和计算节点进行任务的分配和执行;最后,针对随着图像数据量增大,采用传统的TCP/IP网络传输,计算节点间的数据传输速率低下的问题,设计了基于InfiniBand与TCP/IP结合的高速网络传输模块,有效地提高节点间的传输速率.实验结果表明,在此并行架构上实现的分布式计算,能够有效地提升全景图拼接效率,有明显的实际应用价值.Panoramic stitching is a technology to achieve all-round look of the scene by stitching image sequence. It is a research hotspot of Computer Vision and Image Processing. For large-scale and high- resolution image sequence stitching, stitching efficiency of single computer is hard to meet the needs of the practical application. A new solution for panorama parallel stitching based on a multi-machine paral- lel architecture with high-speed network InfiniBand was proposed. At first, do the parallelism analysis for the key steps of panoramic stitching and divide into fine-grained and high degree of parallelism sub- tasks; Secondly assign and execute the tasks through the control node and the compute nodes in the par- allel architecture~ Finally, in order to solve the problem that the rate of the data transmission between the computer nodes using the traditional TCP/IP network is low with the amount of image data increas- ing, the authors designed a high-speed network transmission module based on InfiniBand and TCP/IP which can effectively improve the transmission rate. The experimental results proved that the distributed computing on this parallel, architecture can effectively improve the panorama stitching efficiency with a significant practical value.

关 键 词：全景图拼接 并行架构 并行性分析 INFINIBAND 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]