Publications by David J. Brady.

Papers Published

  1. Zheng, Yunhui and Brady, David J. and Sullivan, Michaell E. and Guenther, Bob D., Fiber-optic localization by geometric space coding with a two-dimensional gray code, Applied Optics, vol. 44 no. 20 (2005), pp. 4306 - 4314 [AO.44.004306] .
    (last updated on 2007/04/11)

    Abstract:
    With the objective of monitoring motion within a room, we segment the two-dimensional (2D) floor space into discrete cells and encode each cell with a binary code word generated by a fiber. We design a set of k-neighbor-local codes to localize an extended object and, particularly when k = 2, employ a 2D gray code to localize a human by tracking his or her footsteps. Methode for implementing the codes in a fiber web are discussed, and we demonstrate the experimental result with the fiber mat. The observed system performance confirms the theoretical analysis. The space coding technique is a promising low-cost candidate not only for human tracking but also for other applications such as human gait analysis. © 2005 Optical Society of America.

    Keywords:
    Fiber optics;Image coding;Computational geometry;Binary codes;Cost effectiveness;Data communication equipment;