The performance of visual object detection, tracking, and recognition algorithms significantly degrade under low-light environments. To address this problem, we propose a simple yet effective approach for visual tracking under low-light environments. First, we detect and enhance low light images using Retinex technology, which boosts the contrast of the images to facilitate our algorithms to extract visual features for tracking. Then, we apply the kernelized correlation Filter (KCF) to track the object and refine the tracking performance by instance segmentation and bounding box optimization using Mask R-CNN. At last, we introduce re-detection into the proposed algorithm to enable the tracker to catch the object while it appears again after heavy occlusion or out-of-view motion. Consequently, the proposed algorithm is suitable for long-term tracking. Experiments on VOT2016, OTB50, and UAV20L show that the proposed algorithm largely improves the tracking success rate and precision, and the running time meets the need for real-time applications.
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