| 油舱液位视觉实时测量算法的研究 |
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| 引用本文： | 刘启海,林玉池,吴颖,宋乐,赵美蓉. 油舱液位视觉实时测量算法的研究[J]. 传感器与微系统, 2010, 29(2) |
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| 作者姓名： | 刘启海 林玉池 吴颖 宋乐 赵美蓉 |
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| 作者单位： | 天津大学精密测试技术及仪器国家重点实验室,天津,300072 |
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| 摘 要： | 为了实现油轮油舱液位测量的自动化和数字化,研制了一种基于S3C2440 ARM9平台的视觉自动测量仪器,使用C语言和嵌入式开发工具ADS开发出一种有效的自适应图像处理算法。根据液位测量范围自制了30m长的特殊尺子。提出了以自适应阈值二值化、数学形态学除噪和字符分割为基础的尺子图像预处理算法。在总结尺子数字和刻度特征的基础上,分析了尺子整数数字识别和小数部分读数的算法。实验结果表明:仪器每次自动读数的时间小于0.4 s;识别的准确率达98%以上;精度为0.1 mm。该算法具有高精度、高速度、稳定性好、自动化程度高等特点,有效解决了传统油位测量中需要人工读数和测量精度低的问题,完全满足油舱液位的实时测量要求。
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| 关 键 词： | 液位测量 二值化 数学形态学 字符分割 数字识别 |
Research on algorithm of vision real-time measurement for liquid level of oil tank |
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| LIU Qi-hai,LIN Yu-chi,WU Ying,SONG Le,ZHAO Mei-rong. Research on algorithm of vision real-time measurement for liquid level of oil tank[J]. Transducer and Microsystem Technology, 2010, 29(2) |
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| Authors: | LIU Qi-hai LIN Yu-chi WU Ying SONG Le ZHAO Mei-rong |
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| Affiliation: | LIU Qi-hai,LIN Yu-chi,WU Ying,SONG Le,ZHAO Mei-rong(State Key Laboratory of Precision Measuring Technology , Instruments,Tianjin 300072,China) |
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| Abstract: | In order to realize automatic measurement for liquid level of oil tank,a new type of vision automatic measurer is developed based on S3C2440 ARM9 platform.A type of adaptive image processing algorithms are developed by C language and embedded development tool,arm development suite(ADS).According to measuring range,a 30 m long ruler is specially made.Pretreatment algorithms of ruler image are presented on the basis of adaptive threshold binarization,mathematic morphology noise-removing and characters segment... |
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| Keywords: | measurement of liquid level binarization mathematic morphology character segmentation digital recognition |
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