| 基于嵌入式ARM的指针式仪表读数的识别研究 |
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| 引用本文： | 金京犬,刘清.基于嵌入式ARM的指针式仪表读数的识别研究[J].南京师范大学学报,2009,9(1):23-27. |
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| 作者姓名： | 金京犬 刘清 |
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| 作者单位： | 南京师范大学,数学与计算机科学学院,江苏,南京,210048
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| 基金项目： | 江苏省高校自然科学基金 |
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| 摘 要： | 指针式仪表自动读数识别，是实现各种指针式仪表自动检定最重要的基础．针对嵌入式ARM系统，采用了一种适合实际设备运行的指针角度识别算法——差影法，并利用最小二乘法拟合指针直线方程．系统充分利用图像动态采集设备和基于多线程系统平台，把图像处理的算法和特征提取的算法进行优化结合，使得采集和判读以多线程方式并发执行．该系统实时性较好、误差小，通过实验结果证明这种算法对于嵌入式ARM系统下的指针式仪表读数的识别具有高效性．
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| 关 键 词： | 嵌入式ARM 图像识别 差影法 最小二乘法 |
Research of Recognition for Pointer Angle of Dial Based on Embedded ARM |
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| Jin Jingquan,Liu Qing.Research of Recognition for Pointer Angle of Dial Based on Embedded ARM[J].Journal of Nanjing Nor Univ: Eng and Technol,2009,9(1):23-27. |
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| Authors: | Jin Jingquan Liu Qing |
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| Affiliation: | School of Mathematics and Computer Science;Nanjing Normal University;Nanjing 210048;China |
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| Abstract: | The automatic recognition technology of analog measurement instruments is very important for automatic calibration devices.In this article,a new method for the point angle recognition is brought forward,which is specially fit to running equipments,and then least square method is used to approximate the point equation.It make full use of dynamic image acquisition equipment and multi-threaded platform,the image processing algorithms and feature extraction algorithms to optimize the combination of acquisition ... |
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| Keywords: | embedded ARM image recognition subtraction law least square method |
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