Accurate tracking of multiple targets in UAV formation video sequences: Aiming at the requirement of accurate tracking of multiple targets in UAV formation video sequences, the STK (satellitetooolkit) 3D modeling software is used to simulate the UAV (unmanned aerial vehicle) formation flight video. The motion region in the image is determined by double difference image operation and multi-resolution connected branch labeling algorithm. An improved greedy algorithm is proposed, which uses the determined rectangular motion region as the initial contour to achieve accurate contour extraction of UAV targets. With the center position of the motion region as input, an online Kalman filter group is established to track multiple targets, and a method for determining and segmenting the occlusion problem in multiple targets is proposed. Simulation experiments verify the proposed method. Keywords: UAV formation; greedy algorithm; contour extraction; multiple target tracking; target occlusion
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