Indoor 3D Virtual World Representation for Multi-user Tracking System on Mobile Device

Boon Giin Lee, Kyeong-Hoon Do, Hoon-Jae Lee

Research output: Chapter in Book/Conference proceedingConference contributionpeer-review


The encroachment of wireless mobile technology had led to the advancement of tracking system through the mobile device. This paper concentrate on delivering the indoor tracking system that utilized the 3D virtual world as the representation of indoor sensing information. (Virtual Reality Modeling Language) VRML is powerful 3D modeling software that suitable to build the virtual map for visualization on the PDA. Moreover, culling algorithm is integrated to decrease the rendering time of VRML files on the PDA. In case of the tracking approach, Received Signal Strength Indication (RSSI) provides the low-cost implementation to locate multi-target user in indoor environment. A feasible accuracy refinement algorithm is proposed to cater the low accuracy position estimation by the unstable RSSI signals caused by the indoor environmental factors. Lastly, the enrollment of digital magnetic compass indicates the user current viewpoint; dynamically update the 3D map on the PDA, synchronized to the physical world.
Original languageEnglish
Title of host publicationProceedings Of 2009 International Conference On Machine Learning And Computing (iacsit Icmlc 2009)
EditorsV Mahadevan, W Yu, J Zhou
Number of pages5
Publication statusPublished - 2009


  • RSSI
  • VRML
  • Accuracy refinement algorithm
  • Culling algorithm
  • Digital magnetic compass


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