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Joint Random Field Model for All-Weather Moving Vehicle Detection

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1 Author(s)
Yang Wang ; Neville Roach Laboratory, National ICT Australia, School of Computer Science and Engineering, University of New South Wales, Kensington, Australia

This paper proposes a joint random field (JRF) model for moving vehicle detection in video sequences. The JRF model extends the conditional random field (CRF) by introducing auxiliary latent variables to characterize the structure and evolution of visual scene. Hence, detection labels (e.g., vehicle/roadway) and hidden variables (e.g., pixel intensity under shadow) are jointly estimated to enhance vehicle segmentation in video sequences. Data-dependent contextual constraints among both detection labels and latent variables are integrated during the detection process. The proposed method handles both moving cast shadows/lights and various weather conditions. Computationally efficient algorithm has been developed for real-time vehicle detection in video streams. Experimental results show that the approach effectively deals with various illumination conditions and robustly detects moving vehicles even in grayscale video.

Published in:

IEEE Transactions on Image Processing  (Volume:19 ,  Issue: 9 )