The paper focuses on the problem of vision-based obstacle detection and
tracking for unmanned aerial vehicle navigation. A real-time object
localization and tracking strategy from monocular image sequences is developed
by effectively integrating the object detection and tracking into a dynamic
Kalman model. At the detection stage, the object of interest is automatically
detected and localized from a saliency map computed via the image background
connectivity cue at each frame; at the tracking stage, a Kalman filter is
employed to provide a coarse prediction of the object state, which is further
refined via a local detector incorporating the saliency map and the temporal
information between two consecutive frames. Compared to existing methods, the
proposed approach does not require any manual initialization for tracking, runs
much faster than the state-of-the-art trackers of its kind, and achieves
competitive tracking performance on a large number of image sequences.
Extensive experiments demonstrate the effectiveness and superior performance of
the proposed approach.

文章研究了无人机导航中基于视觉的障碍物检测和跟踪问题，提出了一种实时的对象定位和跟踪策略，将对象检测和跟踪有效地集成到动态卡尔曼模型中，并使用卡尔曼滤波提供对象状态的粗略预测，而无需对其进行手动初始化，具有比同类技术更快的运行速度和竞争性的跟踪性能。