嵌入式水尺图像检测系统与判读算法研究

为提高沿岸、岛礁的潮汐测量及内陆水位监测的机动灵活性, 设计了一种嵌入式、非接触水位自动测量的水尺图像采集与处理系统。该系统包括了成像单元, 数据采集、处理和存储单元, 交互接口单元。基于实际使用情况, 提出了一种水尺自动判读算法。利用传感器的窗口截取特性, 采集含有少量背景信息的水尺图像; 采用 Sobel水平边缘检测算子进行特征提取; 最后采用投影分析的办法来判读水尺信息。水域实验结果表明, 该系统能进行全天候的水位自动测量。在成像距离为 25~100 m范围内, 达到 6 mm以内的判读精度。

Abstract

A non-contact, embedded water gauge image acquisition and processing system for water level measurement is designed, which can improve the measurement and monitoring flexibility of coast and reefs tides. This system includes imaging unit, data processing unit, storage and interactive unit. For practical application, a water gauge automatic interpretation algorithm is proposed, which includes: the water gauge image collection that contains only a small scale of image using the window interception feature of the sensor, and the Sobel horizontal edge detection operator to extract features and auto-interpretation of the water gauge with the projection analysis method. The experimental results in water show that this system can achieve auto-interpretation measurement of water gauge around the clock. Under the condition that the image distance varies from 25 m to 100 m, maximum interpretation accuracy 6 mm is obtained.

参考文献

[1] 邓玉芬, 沈明, 阮锐, 等. 基于图像识别技术的沿岸潮汐测量方法研究 [J].现代电子技术, 2010(13): 120-122.

DENG Yufen, SHEN Ming, RUAN Rui, et al. Research on Seacoast Tide Gauge Based on Image Recognition Technology [J]. Modern Electronics Technique, 2010(13): 120-122.

[2] 陈宗镛. 海洋潮汐 [M].北京: 科学出版社, 1979: 23-25.

[3] 黄萍萍, 王建华, 陈长风. 几种水面倒影检测方法的实验研究 [J].微计算机信息, 2011(9): 199-200.

HUANG Pingping, WANG Jianhua, CHEN Changfeng. Experimental Studies of Several Reflection Detection Methods [J]. Microcomputer Information, 2011(9): 199-200.

[4] 张朝亮, 江汉红, 张博, 等. 基于 hough变换和 harris检测的标尺图像潮位测量 [J].计算机科学, 2011, 38(3): 283-285.

ZHANG Chaoliang, JIANG Hanhong, ZHANG Bo, et al. Tidal Level Measurement in Ruler Image Based on Hough Transform and Harris Detection [J]. Computer Science, 2011, 38(3): 283-285.

[5] 蔡怀宇, 方磊, 黄战华, 等. 基于频谱滤波拟合的标尺自动判读算法研究 [J].仪器仪表学报, 2008, 29(4): 205-208.

CAI Huaiyu, FANG Lei, HUANG Zhanhua, et al. Study on an Automatic Interpretation Algorithm for the Scale Based on the Spectrum Filtering and Fitting [J]. Chinese Journal of Scientific Instrument, 2008, 29(4): 205-208.

[6] 郁道银, 谈恒英. 工程光学: 二版 [M].北京: 机械工业出版社, 2006.

[7] 任明武, 杨万扣, 王欢, 等. 一种基于图像的水位自动测量新方法 [J].计算机工程与应用, 2007, 43(22): 204-206.

REN Mingwu, YANG Wankou, WANG Huan, et al. New Algorithm of Automatic Water level Measurement based on Image Processing [J]. Computer Engineering and Applications, 2007, 43(22): 204-206.

[8] 段瑞玲, 李庆祥, 李玉和. 图像边缘检测方法研究综述 [J].光学技术, 2005, 31(3): 415-419.

DUAN Ruiling, LI Qingxiang, LI Yuhe. Summary of image edge detection [J]. Optical Technique, 2005, 31(3): 415-419.

[9] OTSU N. A threshold selection method from gray level histograms [J]. IEEE Trans on SMC(S1083-4419), 1979, 9(1): 62-69.

[10] 王树文, 闫成新, 张天序, 等. 数学形态学在图像处理中的应用 [J].计算机工程与应用, 2004, 40(32): 89-92.

WANG Shuwen, YAN Chengxin, ZHANG Tianxu, et al. Application of Mathematical Morphology in Image Processing [J]. Computer Engineering and Applications, 2004, 40(32): 89-92.

黄战华, 熊浩伦, 朱猛, 蔡怀宇. 嵌入式水尺图像检测系统与判读算法研究[J]. 光电工程, 2013, 40(4): 1. HUANG Zhanhua, XIONG Haolun, ZHU Meng, CAI Huaiyu. Embedded Measurement System and Interpretation Algorithm for Water Gauge Image[J]. Opto-Electronic Engineering, 2013, 40(4): 1.

嵌入式水尺图像检测系统与判读算法研究

关于本站 Cookie 的使用提示

全站搜索

嵌入式水尺图像检测系统与判读算法研究

相关论文

相关资讯

关于本站 Cookie 的使用提示

全站搜索