Title: Real-time distributed vision-based network system for logistics applications

Authors: C.H. Wu, W.H. Ip, C.Y. Chan

Addresses: Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong. ' Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong. ' Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hung Hom, Hong Kong

Abstract: The communication network providing real-time image sharing between the planning office and the warehouse for supply chain management is presented in this paper. Middleware plays a major role in developing distributed system efficiently for communication between image capturing devices (Vision Node) and image processing node as well as the distributed nodes. The image distribution over the network in real-time manner is useful to numerous logistic applications, such as quality control of pick-and-pack service, planning of cargo and pallet loading, and vehicles tracking. A detail construction of the vision-based network system both with respect to image capturing devices and data transmission has been announced. A gigabit Ethernet network is acting as a backbone of the whole system. The employment of the Network Data Distribution Service (NDDS) for the real-time distributed vision-based network system is discussed and experimental result of the real-time and delay time properties in each part on the network were considered and presented in this paper. Test results show that NDDS is capable of supporting a distributed logistics vision system.

Keywords: machine vision; RTPS model; real time publish-subscribe model; UDP/IP; user datagram protocol; internet protocol; distributed networks; image sharing; supply chain management; SCM; middleware; image capture; image processing; logistics vision systems; data transmission; Ethernet networks.

DOI: 10.1504/IJISTA.2009.024260

International Journal of Intelligent Systems Technologies and Applications, 2009 Vol.6 No.3/4, pp.309 - 322

Available online: 30 Mar 2009 *

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