Publications [#280432] of David J. Brady

Papers Published

  1. Fang, J-S; Hao, Q; Brady, DJ; Guenther, BD; Hsu, KY, Real-time human identification using a pyroelectric infrared detector array and hidden Markov models., Optics Express, vol. 14 no. 15 (July, 2006), pp. 6643-6658, ISSN 1094-4087
    (last updated on 2019/12/11)

    Abstract:
    This paper proposes a real-time human identification system using a pyroelectric infrared (PIR) detector array and hidden Markov models (HMMs). A PIR detector array with masked Fresnel lens arrays is used to generate digital sequential data that can represent a human motion feature. HMMs are trained to statistically model the motion features of individuals through an expectation-maximization (EM) learning process. Human subjects are recognized by evaluating a set of new feature data against the trained HMMs using the maximum-likelihood (ML) criterion. We have developed a prototype system to verify the proposed method. Sensor modules with different numbers of detectors and different sampling masks were tested to maximize the identification capability of the sensor system.

    Keywords:
    biometrics (access control);expectation-maximisation algorithm;feature extraction;hidden Markov models;image motion analysis;infrared detectors;lenses;optical arrays;pyroelectric detectors;