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Optical Engineering

Learning-based appearance model for probabilistic visual tracking
Author(s): Anping Li; Zhongliang Jing; Shi Qiang Hu
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Paper Abstract

In visual tracking, the object's appearance may change over time due to illumination changes, pose variations, and partial or full occlusions. This variability makes tracking difficult. This paper proposes an adaptive appearance model for visual tracking. The model can adapt to changes in object appearance over time. The value of each pixel is modeled by a Gaussian mixture distribution. A novel update scheme based on the expectation maximization algorithm is developed to update the appearance model parameters. In designing the tracking algorithm, the observation model is based on the adaptive appearance model, and a particle filter is employed. Outlier pixels and occlusions are handled using a robust-statistics technique. Numerous experimental results demonstrate that the proposed algorithm can track objects well under illumination changes, large pose variations, and partial or full occlusions.

Paper Details

Date Published: 1 July 2006
PDF: 9 pages
Opt. Eng. 45(7) 077204 doi: 10.1117/1.2227276
Published in: Optical Engineering Volume 45, Issue 7
Show Author Affiliations
Anping Li, Shanghai Jiao Tong Univ. (China)
Zhongliang Jing, Shanghai Jiao Tong Univ. (China)
Shi Qiang Hu, Shanghai Jiao Tong Univ. (China)

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