Fusion of multiple trackers in video networks

Abstract

In this paper, we address the camera selection problem by fusing the performance of multiple trackers. Currently, all the camera selection/hand-off approaches largely depend on the performance of the tracker deployed to decide when to hand-off from one camera to another. However, a slight inaccuracy of the tracker may pass the wrong information to the system such that the wrong camera may be selected and error may be propagated. We present a novel approach to use multiple state-of-the-art trackers based on different features and principles to generate multiple hypotheses and fuse the performance of multiple trackers for camera selection. The proposed approach has very low computational overhead and can achieve real-time performance. We perform experiments with different numbers of cameras and persons on different datasets to show the superior results of the proposed approach. We also compare results with a single tracker to show the merits of integrating results from multiple trackers.