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Movement Detection Based on Dense Optical Flow for Unmanned Aerial Vehicles

机译:基于密集光流的无人机运动检测

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In this paper we present a novel computer vision-based movement detection algorithm which can be used for applications, such as human detection with unmanned aerial vehicles. The algorithm uses the deviation of all pixels from the anticipated geometry between 2 or more succeeding images to distinguish between moving and static scenes. This assumption is valid because only pixels which correspond to moving objects can violate the epipolar geometry. For the estimation of the fundamental matrix we present a new method for rejecting outliers which has, contrary to RANSAC, a predictable runtime and still delivers reliable results. To determine movement, especially in difficult areas, we introduce a novel local adaptive threshold method, a combined temporal smoothing strategy and further outlier elimination techniques. All this leads to promising results where more than 60% of all moving persons in our own recorded test set have been detected.
机译:在本文中,我们提出了一种新颖的基于计算机视觉的运动检测算法,该算法可用于各种应用,例如无人驾驶飞机的人体检测。该算法使用2个或更多后续图像之间所有像素与预期几何形状的偏差来区分运动场景和静态场景。该假设是有效的,因为只有与移动物体相对应的像素才可能违反对极几何形状。为了估计基本矩阵,我们提出了一种排除异常值的新方法,该方法与RANSAC相反,具有可预测的运行时间,并且仍然可以提供可靠的结果。为了确定运动,特别是在困难区域中的运动,我们引入了一种新颖的局部自适应阈值方法,一种组合的时间平滑策略以及其他离群值消除技术。所有这些都带来了令人鼓舞的结果,在我们自己记录的测试集中,超过60%的移动人员被检测到。

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