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Present an anti-geometric attacks video watermarking scheme based on normalization of pseudo-Zernike moment. Employing the RST invariant property of improved Pseudo-Zernike moment magnitudes, the watermark image is embedded into the centre circle area of I frame in the spatial domain after reconstruction. Because of much high similarity between video frames, an optimal moment set is selected on the...
This paper discusses the vision-based UAV formation flight methods, describes the critical section-formation guidance, moving object extracting, object tracking in detail. At the same time, we propose a real-time video drawing method to apply to flying vehicle object extracting, and introduce the unscented Kalman filtering(UKF) into object tracking to improve the often-used extended Kalman filtering(EKF)...
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