基于图像处理技术指针表的自动识别

Automatic Recognition Research of Pointer Meter Based on Image Processing Technology

介绍了一种运用计算机图像处理技术对指针式仪表进行自动识别读数,以实现指针表自动检定,重点介绍了检定过程中指针示值自动识别读取数据来代替人工识别的判读方法。研究并设计了采用CCD摄像头摄取表盘图像,经计算机进行图像识别及数据处理实现仪表指针自动读数,从而避免了传统人工判读方法受工作人员与仪表盘的距离和角度等主观因素导致判读的数据误差较大、效率低、可靠性不高的影响,该方法不仅解决了实际应用中有关模拟指针式仪表的检定自动化问题,而且有利于大量信息的及时采集和统一管理。

The article introduces a method using computer image processing technology to automati- cally identify pointer meter readings, to realize the automatic verification of the pointer meter, focu- sing on the pointer indication values automatically identify to replace artificial identification method during the certification process. It devises and uses CCD camera to acquire dial image, and then ac- quires dial indicated value after image recognition and data processing on computer, thus avoiding the traditional manual identification methods affected by subjective factors such as the distance and angle of the staff and the dashboard led to the interpretation of data errors, low efficiency, and relia- bility is not high. This method not only solves the practical application test automation problems on analog pointer instrument, but also conducive to the timely collection of large amounts of information and unified management.