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- W2510331996 abstract "This work proposes a trajectory clustering-based approach for segmenting flow patterns in high density crowd videos. The goal is to produce a pixel-wise segmentation of a video sequence (static camera), where each segment corresponds to a different motion pattern. Unlike previous studies that use only motion vectors, we extract full trajectories so as to capture the complete temporal evolution of each region (block) in a video sequence. The extracted trajectories are dense, complex and often overlapping. A novel clustering algorithm is developed to group these trajectories that takes into account the information about the trajectories' shape, location, and the density of trajectory patterns in a spatial neighborhood. Once the trajectories are clustered, final motion segments are obtained by grouping of the resulting trajectory clusters on the basis of their area of overlap, and average flow direction. The proposed method is validated on a set of crowd videos that are commonly used in this field. On comparison with several state-of-the-art techniques, our method achieves better overall accuracy." @default.
- W2510331996 created "2016-09-16" @default.
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- W2510331996 date "2016-09-01" @default.
- W2510331996 modified "2023-10-18" @default.
- W2510331996 title "A trajectory clustering approach to crowd flow segmentation in videos" @default.
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- W2510331996 doi "https://doi.org/10.1109/icip.2016.7532548" @default.
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