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. 2010 Jun 18;10(6):6092–6114. doi: 10.3390/s100606092

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© 2010 by the authors; licensee MDPI, Basel, Switzerland.

This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).

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Figure 2. — Foreground detection from independent components using the estimation E(ϒ) and current image I_t. In (a) the unmixed space as orthogonal components resulted from the pdfs of U₁ and U₂; the main component represents background information (vertical component) and the second component represents foreground objects; In (b) the pdf of estimated $I_{i}^{*}$ after removing background data. The global maxima correspond to background data, and second maxima (right side) correspond to objects with motion.