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Groups of pedestrians like family members and friends normally move slower than others and therefore act as a virtual barrier and slow down the crowd. In this paper we present our variation of least effort cellular automata algorithm which also considers the effect of pedestrian groups on crowd movement. The algorithm has been used in small scale movement layer of our multi-agent crowd simulation...
A new geomagnetic navigation positioning system is proposed in this paper. Unlike those existing algorithms which rely on the anomaly magnetic field, the method presented in this paper selects the main magnetic field as navigation reference, thus is more adaptive. Meanwhile, it has the advantages of fast calculation, high accuracy as well as low storage requirement, which are theoretically verified...
According to the problem that perpendicular impact on the ground stationary target was required for some guided weapons, the adaptive proportional guidance law with terminal angular constraint was derived, which didnpsilat need range information. On analyzing the longitudinal plane motion equation and lateral plane motion equation in guided phase, the guidance logic for perpendicular impact task was...
In order to estimate the approach angle and relative height of Unmanned Aircraft Vehicle (UAV) which lands autonomously, a combinational approach of monocular vision and stereo vision is presented. From monocular sequences, vanishing line is extracted by Hough transform and RANSAC algorithm, and then approach angle of UAV is calculated through vanishing line geometry. From stereo sequences, feature-based...
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