液位实时自动跟踪测量系统-传感技术学报
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液位自动测量系统,它适用于测量范围大㊁液位变化速度快的实时液位测量㊂ 该系统以 CCD 摄像机采集的液位和钢尺图像为 基础,通过钢尺刻度识别㊁钢尺刻线及液位识别三大识别模块完成液位高度测量,根据液位高度反馈控制电机带动 CCD 相机 实验结果表明该测量系统的算法有着较高的鲁棒性以及较快的测量速度,可以完成精度在 0. 1mm 以内的液位测量,可以被应 用于精度要求高的液位测量场合㊂ 跟随液位实现实时自动跟踪测量㊂ 为了提高算法的识别 速 度, 增 强 算 法 的 鲁 棒 性, 该 系 统 采 用 了 NCC ( Normalized Cross Correlation) 模板匹配数字识别方法,在刻线识别和液位识别过程中充分利用了图像的灰度特征和钢尺的结构特征完成识别㊂
液位实时自动跟踪测量系统 *
æ1. 天津大学精密测试技术及仪器国家重点实验室,天津 300072 ; ÷ ö è2. 国家海洋标准计量中心,天津 300112 ø
ç
徐 驰1 ,孙长库1* ,王 鹏1 ,贾伟广2
摘 要:针对传统液位测量方法的精度低㊁速度慢㊁测量范围受限制等问题,设计了一套基于视觉图像处理的高精度㊁快速的
XU Chi1 ,SUN Changku1* ,WANG Peng1 ,JIA Weiguang2
)
Abstract:In consideration of the traditional measurement method for the height of water with lower accuracy and theory is designed. This system processes the images of ruler and water tube captured from CCD camera by three
(
1 . State Key Laboratory of Precision Measuring Technology and Instruments,Tianjin University,Tianjin 300072 ,China; 2 . National Center of Oceanographic Standards and Metrology,Tianjin 300112 ,China
slower measuring speed and small measuring scale,a set of height measuring system based on digital image process steps to complete the measuring task, that is: recognition of ruler number; identification of ruler scribed line; recognition of water level,then control of the motor attached with the CCD camera up or down to adjust the position the NCC ( Normalized Cross Correlation ) template matching method with respect to the robustness of algorithm and results show that this system has superior performance over the measurement of large scale water level with good rorequired high accuracy. of CCD camera to complete real-time tracking measurement. During the recognition of ruler number,this system uses stability of the measuring system. As to the identification of ruler scribed line and recognition of water level, this system makes full use of the gray features of the image and structure characteristics of the ruler. The experimental bustness and it could complete a measurement with 0. 1mm accuracy,so it can be used in water-level measurement Key words:image process;real-time measurement of liquid level;recognition of ruler Calibration-value;recognition of ruler scribed line;template matching EEACC:7210A;7210X;7230G doi:10. 3969 / j. issn. 1004-1699. 2011. 10. 027
关键词:图像处理;液位实时测量;钢尺刻度识别;钢尺刻线识别;模板匹配
来自百度文库
中图分类号:TP242. 6 文献标识码:A 文章编号:1004-1699 ( 2011 ) 10-1506-05 在实际应用中, 液位测量是一个普遍的测量任 务,比如用于模仿海浪形态检定浮子的验潮仪,城市 给排水系统水塔的水位监视等㊂ 传统的液位测量方 法有微波式[1] ㊁电容式㊁超声波式㊁差压式和电导式[2]
第 24 卷 第 10 期 2011 年 10 月
CHINESE JOURNAL OF SENSORS AND ACTUATORS
传 感 技 术 学 报
Vol. 24 No. 10 Oct. 2011
Automatic Measuring System for High Precision Measurment on Height of Water*
液位实时自动跟踪测量系统 *
æ1. 天津大学精密测试技术及仪器国家重点实验室,天津 300072 ; ÷ ö è2. 国家海洋标准计量中心,天津 300112 ø
ç
徐 驰1 ,孙长库1* ,王 鹏1 ,贾伟广2
摘 要:针对传统液位测量方法的精度低㊁速度慢㊁测量范围受限制等问题,设计了一套基于视觉图像处理的高精度㊁快速的
XU Chi1 ,SUN Changku1* ,WANG Peng1 ,JIA Weiguang2
)
Abstract:In consideration of the traditional measurement method for the height of water with lower accuracy and theory is designed. This system processes the images of ruler and water tube captured from CCD camera by three
(
1 . State Key Laboratory of Precision Measuring Technology and Instruments,Tianjin University,Tianjin 300072 ,China; 2 . National Center of Oceanographic Standards and Metrology,Tianjin 300112 ,China
slower measuring speed and small measuring scale,a set of height measuring system based on digital image process steps to complete the measuring task, that is: recognition of ruler number; identification of ruler scribed line; recognition of water level,then control of the motor attached with the CCD camera up or down to adjust the position the NCC ( Normalized Cross Correlation ) template matching method with respect to the robustness of algorithm and results show that this system has superior performance over the measurement of large scale water level with good rorequired high accuracy. of CCD camera to complete real-time tracking measurement. During the recognition of ruler number,this system uses stability of the measuring system. As to the identification of ruler scribed line and recognition of water level, this system makes full use of the gray features of the image and structure characteristics of the ruler. The experimental bustness and it could complete a measurement with 0. 1mm accuracy,so it can be used in water-level measurement Key words:image process;real-time measurement of liquid level;recognition of ruler Calibration-value;recognition of ruler scribed line;template matching EEACC:7210A;7210X;7230G doi:10. 3969 / j. issn. 1004-1699. 2011. 10. 027
关键词:图像处理;液位实时测量;钢尺刻度识别;钢尺刻线识别;模板匹配
来自百度文库
中图分类号:TP242. 6 文献标识码:A 文章编号:1004-1699 ( 2011 ) 10-1506-05 在实际应用中, 液位测量是一个普遍的测量任 务,比如用于模仿海浪形态检定浮子的验潮仪,城市 给排水系统水塔的水位监视等㊂ 传统的液位测量方 法有微波式[1] ㊁电容式㊁超声波式㊁差压式和电导式[2]
第 24 卷 第 10 期 2011 年 10 月
CHINESE JOURNAL OF SENSORS AND ACTUATORS
传 感 技 术 学 报
Vol. 24 No. 10 Oct. 2011
Automatic Measuring System for High Precision Measurment on Height of Water*