改進(jìn)的運(yùn)動目標(biāo)檢測與跟蹤算法在嵌入式平臺上的研究
[Abstract]:In recent years, with the rapid development of computer vision technology, embedded technology and communication technology, intelligent video surveillance technology has been more and more widely used in many fields of society. Moving target detection and tracking is one of the core technologies of intelligent video surveillance technology, and it is also the basis of intelligent video surveillance application. At present, moving target detection and tracking is moving towards the integration of embedded technology and wireless communication network technology. The research and development of intelligent video surveillance system based on embedded platform has become a hot topic for many researchers because it has a good prospect in both scientific research and practical application. In this paper, the technology of moving target detection and tracking in static scene is studied deeply, and an improved moving target detection and tracking algorithm is designed for the problems existing in traditional algorithms. The main research work of this paper is as follows: in the aspect of moving target detection, firstly, three commonly used moving target detection methods: optical flow method, background difference method and inter-frame difference method, are briefly analyzed. The advantages and disadvantages of the inter-frame difference method and the background difference method are discussed, and then the two algorithms are improved, and the edge detection operator is introduced to evaluate their selection objectively. A moving target detection algorithm based on five frame difference and background edge detection difference is designed. Finally, the experimental results show that the proposed algorithm can not only quickly extract the complete and accurate contour of moving objects, but also eliminate the shadow and void phenomena, and lay the foundation for the follow-up tracking of moving targets. In the aspect of moving target tracking, different moving target tracking algorithms are introduced, and the theory and principle of the traditional mean drift motion tracking algorithm are studied. Secondly, aiming at the two shortcomings of the traditional mean shift tracking algorithm: tracking fast moving target and losing the target easily when there is serious occlusion, the change of target centroid is determined and the change of pasteurian coefficient is monitored. A moving target tracking algorithm based on Kalman filter and mean drift tracking algorithm is designed to solve the above problems. Finally, it is proved by experiments that the accuracy and stability of the algorithm is significantly improved than that of the traditional mean shift tracking algorithm. In the aspect of system function realization, the embedded operating system, computer open source vision library OpenCV and graphical interface library Qt are transplanted in the development board first, and then the modular software design of the algorithm implementation is carried out. The detection and tracking of moving targets are realized on the embedded platform through the programming of related programs. The experimental results show that the improved algorithm of moving target detection and tracking in this paper improves the adaptability of the algorithm in complex environment, and can achieve fast, accurate detection and stable tracking of moving targets, and has a wide application prospect.
【學(xué)位授予單位】:江西理工大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2012
【分類號】:TP391.41;TP368.1
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