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摘要:
The mean-shift algorithm is generally used in tracking system, which is based on non-parametric density estimation method and produces less computational loads. The traditional mean-shift algorithm cannot effectively handle inadequate representation of target's color distribution, invariable target model and occlusion. Aiming to resolve these problems, an adaptive multi-feature mean-shift algorithm is proposed. In this algorithm, an improved kernel function is obtained by combining the silhouette of the target. This method could eliminate the influence of the background, various illuminations and other related limitations. Furthermore, the color-texture histogram is extracted to achieve target model effectively. A selective update strategy is proposed to adaptively update the target model. The update scheme could not only eliminate the accumulated error, but also avoid drifting away. At last, extend Kalman filter (EKF) is used to estimate the person's motion between consecutive frames. Compared with the traditional algorithm, the presented algorithm could track the target successfully when the background has similar color and texture. In addition, the average tracking time is 140 ms/frame, which satisfied the requirements of real-time target tracking. Experimental results show that the proposed algorithm is robust against similarity distraction and occlusion.
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来源 :
Journal of Optoelectronics Laser
ISSN: 1005-0086
年份: 2014
期: 10
卷: 25
页码: 2018-2024
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