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Moving objects detection and tracking is the first and enabling step for many high-level UAV surveillance tasks, including cooperative UAV path planning, navigation control, and automated information analysis. In this work, we develop a low-complexity and reliable moving object detection algorithm by exploring the ideas of uncertainty analysis and spatiotemporal activity clustering. More specifically, the authors develop a fast and efficient algorithm to estimate the global vehicle-camera motion. Image regions (blocks) with local motion was detected using statistical hypothesis testing. Using spatiotemporal clustering, the authors group these moving blocks into moving objects with physical meanings, such as moving vehicles or persons. Our extensive experimental results demonstrate the efficiency of the proposed algorithm.
Date of Conference: 27-30 May 2007