| 基于核密度估计尺度空间的目标跟踪算法 |
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| 引用本文： | 贾静平,张飞舟,柴艳妹. 基于核密度估计尺度空间的目标跟踪算法[J]. 清华大学学报(自然科学版), 2009, 49(4): 595-598 |
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| 作者姓名： | 贾静平 张飞舟 柴艳妹 |
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| 作者单位： | 北京大学,地空学院遥感与地理信息系统研究所,北京,100871;清华大学计算机科学与技术系,北京,100084 |
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| 基金项目： | 国家“八六三”高技术项目(2004AA13020);;中国博士后科学基金项目(20080440262,20080440381) |
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| 摘 要： | 为能够准确表示目标颜色分布、适应目标尺寸连续变化,提出了一种新的序列图像目标跟踪算法。该算法首先计算目标区域颜色概率分布的核密度估计函数,然后通过规整化每一帧输入图像像素在此函数上的取值生成目标概率分布图。最后通过检测多尺度规范化Laplacian滤波的极值,实现目标的定位和尺寸描述。与基于直方图的算法比较并结合大量真实序列图像上的实验验证表明,该算法更好地描述了目标颜色特征,提高了跟踪算法的精度。
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| 关 键 词： | 图像跟踪 多变量核密度估计 尺度空间 |
Object tracking using the trust-region method in scale-space with probability distribution images generated by kernel density estimation |
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| JIA Jingping,ZHANG Feizhou,CHAI Yanmei. Object tracking using the trust-region method in scale-space with probability distribution images generated by kernel density estimation[J]. Journal of Tsinghua University(Science and Technology), 2009, 49(4): 595-598 |
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| Authors: | JIA Jingping ZHANG Feizhou CHAI Yanmei |
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| Affiliation: | 1.Institute of Remote Sensing & Geographic Information System;Peking University;Beijing 100871;China;2.Department of Computer Science and Technology;Tsinghua University;Beijing 100084;China |
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| Abstract: | In the widely used mean shift-based tracking algorithms,targets are described by color histograms with their size determined using predefined parameters.However histograms affect the precision of the target's color description and it's impossible to precisely describe a target's size with discrete parameters.This paper presents a new approach for tracking objects in image sequences which precisely tracks the constant changes of the target's size.A reference image gives the kernel density estimate(KDE) of th... |
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| Keywords: | image tracking multi-variant kernel density estimation scale-space |
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