| 机械式冲床停上死点位置的控制策略设计与实现 |
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| 引用本文： | 秦文强,何通能,陈德富,李华楠.机械式冲床停上死点位置的控制策略设计与实现[J].应用声学,2016,24(4):98-100. |
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| 作者姓名： | 秦文强 何通能 陈德富 李华楠 |
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| 作者单位： | 浙江工业大学计算机学院 杭州 310023,浙江工业大学计算机学院 杭州 310023,浙江工业大学计算机学院 杭州 310023,浙江工业大学计算机学院 杭州 310023,浙江工业大学计算机学院 杭州 310023 |
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| 基金项目： | 国家自然科学基金资助项目（C12412135, 61402410），浙江省自然科学基金资助项目（LY13F020029, LQ14F020004） |
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| 摘 要： | 车牌定位是车牌自动识别的第一步,而如何考虑当照影响是车牌定位是否成功的关键。本文提出了一种考虑不同光照条件的车牌定位方法,首先,针对不同光照条件下采集到的车牌图像明暗度的不同,利用多阈值处理方法得到车牌信息不丢失的、最佳的二值图像,然后,在其二值图像中首先利用灰度跳变定位车牌的上下边界,接着对字符垂直投影后的宽度进行统一的调整并以固定的字符间隔特征定位车牌的左右边界,从而完成车牌定位。最后,通过实验验证了该方法的有效性。
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| 关 键 词： | 车牌定位 多阈值二值化 灰度跳变 投影调整 |
| 收稿时间： | 2015/11/6 0:00:00 |
| 修稿时间： | 2015/11/27 0:00:00 |
Design and Realization of Control Strategy of Mechanical Punch Stop Top Dead Center Position |
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| He Tongneng,Chen Defu and Li Huanan.Design and Realization of Control Strategy of Mechanical Punch Stop Top Dead Center Position[J].Applied Acoustics,2016,24(4):98-100. |
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| Authors: | He Tongneng Chen Defu and Li Huanan |
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| Institution: | Information and Intelligent System Institute,College of Information,Zhejiang University of Technology,Information and Intelligent System Institute,College of Information,Zhejiang University of Technology,Information and Intelligent System Institute,College of Information,Zhejiang University of Technology,Information and Intelligent System Institute,College of Information,Zhejiang University of Technology |
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| Abstract: | Car license plate location is one the key problems within the system of car license plate recognition. In this paper, a method of car license plate location that considering different lighting conditions is investigated. First, a binaryzation image including clear loss of car license plate was obtained through a muti-threshold method by considering different lighting conditions. Second, gray beep was employed to determine upper and lower edges of the car license plate. Third, left and right edges of the car license plate were located and then, the full location of car license plate can be finished. Finally, the proposed method was verified through experiment. |
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| Keywords: | car license plate location multi-threshold binaryzation the gray beep projection adjusting |
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