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|Title: ||Alignment of velocity fields for video surveillance|
|Authors: ||Marques, Jorge S.|
Lemos, João M.
|Issue Date: ||May-2012|
|Citation: ||J. S. Marques, M. Barão, J. M. Lemos, "Alignment of velocity fields for video surveillance", Pattern Recognition Letters, no. 33, pp. 1632–1637, 2012.|
|Abstract: ||Velocity fields play an important role in surveillance since they describe typical motion behaviors of video objects (e.g., pedestrians) in the scene. This paper presents an algorithm for the alignment of velocity fields acquired by different cameras, at different time intervals, from different viewpoints. Velocity fields are aligned using a warping function which maps corresponding points and vectors in both fields. The warping parameters are estimated by minimizing a non-linear least squares energy. Experimental tests show that the proposed model is able to compensate significant misalignments, including translation, rotation and scaling.|
|Appears in Collections:||INF - Artigos em Livros de Actas/Proceedings|
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