Real-Time Two-Dimensional Correlation Speed Measurement Based on CMOS Image Sensor

ZHANG Yu-xin; LIU Yu; GE Wen-qi

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Real-Time Two-Dimensional Correlation Speed Measurement Based on CMOS Image Sensor

Imaging Technology & Image Processing | 更新时间：2020-08-12

- Real-Time Two-Dimensional Correlation Speed Measurement Based on CMOS Image Sensor
- Chinese Journal of Liquid Crystals and Displays Vol. 25, Issue 6, Pages: 896-900(2010)
- 作者机构：
  
  1. 中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
  2. 中国科学院研究生院,北京 100039
  3. 北华大学电气信息工程学院,吉林 132021
  4. 吉林铁道职业技术学院铁道工程系,吉林 132001
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP29
- Received：29 December 2009，
  
  Revised：10 February 2010，
  
  Published Online：20 December 2010，
  
  Published：20 December 2010
- 稿件说明：
移动端阅览
张玉欣, 刘宇, 葛文奇. 基于CMOS图像传感器的实时二维相关测速法[J]. 液晶与显示, 2010,25(6): 896-900

ZHANG Yu-xin, LIU Yu, GE Wen-qi. Real-Time Two-Dimensional Correlation Speed Measurement Based on CMOS Image Sensor[J]. , 2010,25(6): 896-900
张玉欣, 刘宇, 葛文奇. 基于CMOS图像传感器的实时二维相关测速法[J]. 液晶与显示, 2010,25(6): 896-900 DOI：

ZHANG Yu-xin, LIU Yu, GE Wen-qi. Real-Time Two-Dimensional Correlation Speed Measurement Based on CMOS Image Sensor[J]. , 2010,25(6): 896-900 DOI：

摘要

为了提高非接触式测量的精度与实时性

以FPGA为基础提出了一种基于CMOS图像传感器的实时二维相关测速法。介绍了二维相关测速的原理和实现方法

推导出该方法的二维测速范围和测速精度。所采用的CMOS图像传感器具有1 2801 024像素的分辨率

测量精度可达1个像素

并在此基础上采用求重心法进行8细分将测量精度提高到1/8像素。利用FPGA将传统的数学运算转换为逻辑运算提高了运算速度和可靠性

实现了实时性测量。通过实验验证了该方法的可行性。

Abstract

In order to improve the accuracy and real-time performance of the non-contact measurement

a real-time two-dimensional correlation speed measurement was proposed on image processing using high speed CMOS based on FPGA. The principle and practical work method of the measurement were analyzed

the range and accuracy of this two-dimensional correlation speed measurement were deduced .The resolving power of the CMOS image sensor is one pixel

and it can be improved to 1/8 pixel by Subdivision Technology. The mathematical operation is converted to logical operation through FPGA .Finally

a preliminary test result is presented.

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references

徐正平,葛文奇,杨守旺,等.基于CMOS摄像头与FPGA的位置检测系统设计[J]. 液晶与显示, 2009,24(5):746-750.[2] 马岩,胡君,吴伟平. 基于CCD成像单元仿真测试系统的实时性实现[J]. 液晶与显示, 2008,23(2):200-204.[3] 王庆有. 图像传感器应用技术 [M].北京:电子工业出版社,2003:207-244.[4] 卢万欣.采用CCD线阵做探测器的数字相关测速系统[J]. 长春光学精密机械学院学报, 1992,15(2):85-90.[5] 谢维达,邵德荣,王春辉.基于面阵图像传感器的二维相关测速研究[J]. 光电子技术 ,2003,23(4):224-228.[6] 周瑛,魏平.基于FPGA并行处理的实时图像相关速度计[J]. 光学技术 ,2006,32(1):108-110.[7] 谢维达,王春辉,邵德荣.基于FPGA的二维相关测速方法研究[J]. 测控技术, 2004,23(1):66-68.[8] 杨守旺,龙科慧,周磊,等. 航空相机调焦单元仿真系统的实时显示方法研究[J]. 液晶与显示, 2009,24(5):740-745.[9] Xu Cheng, Liu Yongcai, Qiang Wenyi, et al. Image velocity measurement based on motion blurring effect[J].Infrared and Laser Engineering,2008,37(4):625-628.

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