| 引用本文: | 傅 惠,徐建闽.基于动态时间弯曲的多模板匹配车型分类[J].控制理论与应用,2008,25(3):529~532.[点击复制] |
| FU Hui,XU Jian-min.Multiple templates matching for vehicle’s classification based on dynamic time warping[J].Control Theory and Technology,2008,25(3):529~532.[点击复制] |
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| 基于动态时间弯曲的多模板匹配车型分类 |
| Multiple templates matching for vehicle’s classification based on dynamic time warping |
| 摘要点击 1708 全文点击 1567 投稿时间：2006-01-12 修订日期：2007-04-04 |
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| DOI编号 10.7641/j.issn.1000-8152.2008.3.026 |
| 2008,25(3):529-532 |
| 中文关键词 动态时间弯曲 多模板匹配 车型分类 感应线圈 信息熵 |
| 英文关键词 DTW(dynamic time warping) multiple templates matching vehicle’s classification inductive loop information entropy |
| 基金项目 国家高技术研究发展计划(863计划)资助项目(2006AA11Z211); 国家自然科学基金资助项目(50578064). |
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| 中文摘要 |
| 感应线圈采集到的频率变化曲线, 取决于车速、车辆自身结构及其通过感应线圈时的相对位置. 针对同类车辆的频率变化曲线存在伸长或压缩情况, 研究一种基于动态时间弯曲(DTW)的车型分类新方法. 首先对采集到的车辆频率变化数据序列进行预处理; 其次, 结合DTW方法和最优聚类分析原理, 选取同类车型的多个频率变化特征曲线作为分类模板, 以改善单模板匹配方法的分类正确率; 再次, 确定同类车型的局部区分度指标, 并优化调整局部区分度指标范围; 最后对考察车辆的采样曲线进行多模板匹配分析, 得出车型分类结论. 仿真实验分析了本文方法与其他方法比较存在的优势. |
| 英文摘要 |
| A vehicle’s frequency-response curve is determined by its velocity, structural framework and the relative location to an inductive coil detector. As the frequency-response curves of vehicles of the same type are varied in length, a novel classification method based on the dynamic-time-warping (DTW) algorithm is proposed. After a pretreatment on the obtained frequency-response curves, multiple curves are selected as vehicle classification-templates for DTW algorithm and the optimal clustering method. This will improve the classification properties of the single-template matching method. Next, we determine the dissimilarity-indices and their ranges for the vehicles of the same type. Finally, the classification result is obtained by matching the sample curve to the multiple templates using DTW algorithm. A simulation is given to illustrate the advantage of the method. |
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