کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
536463 | 870529 | 2012 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Alignment of velocity fields for video surveillance Alignment of velocity fields for video surveillance](/preview/png/536463.png)
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.
► Alignment algorithm for pairs of velocity fields.
► Points and vectors are transformed in different ways.
► Parameter estimation is achieved by non-linear least squares.
► Application to surveillance using multiple cameras.
Journal: Pattern Recognition Letters - Volume 33, Issue 12, 1 September 2012, Pages 1632–1637