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长春光学精密机械与物... [1]
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会议论文 [1]
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2006 [1]
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发表日期:2006
专题:长春光学精密机械与物理研究所
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Target track system design based on circular projection (EI CONFERENCE)
会议论文
ICO20: Optical Information Processing, August 21, 2005 - August 26, 2005, Changchun, China
Song H.-J.
;
Zhu M.
;
Hu S.
;
Shen M.-L.
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浏览/下载:14/0
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提交时间:2013/03/25
Template matching is the process of searching the present and the location of a reference image or an object in a scene image. Template matching is a classical problem in a scene analysis: given a reference image of an object
decide whether that object exists in a scene image under analysis
and find its location if it does. The template matching process involves cross-correlating the template with the scene image and computing a measure of similarity between them to determine the displacement. The conventional matching method used the spatial cross-correlation process which is computationally expensive. Some algorithms are proposed for this speed problem
such as pyramid algorithm
but it still can't reach the real-time for bigger model image. Moreover
the cross-correlation algorithm can't be effective when the object in the image is rotated. Therefore
the conventional algorithms can't be used for practical purpose. In this paper
an algorithm for a rotation invariant template matching method based on different value circular projection target tracking algorithm is proposed. This algorithm projects the model image as circular and gets the radius and the sum of the same radius pixel value. The sum of the same radius pixel value is invariable for the same image and the any rotated angle image. Therefore
this algorithm has the rotation invariant property. In order to improve the matching speed and get the illumination invariance
the different value method is combined with circular projection algorithm. This method computes the different value between model image radius pixel sum and the scene image radius pixel sum so that it gets the matching result. The pyramid algorithm also is been applied in order to improve the matching speed. The high speed hardware system also is been design in order to meet the real time requirement of target tracking system. The results show that this system has the good rotate invariance and real-time property.
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