利用Matlab的图象处理功能对摄象头采集到的仪表图象进行分析,得到指示值,同时利用dll 技术,在虚拟仪器编程软件Labview 中调用,输出得到对应的计算值,实现了对指针式仪表的自动监控,增加了整个系统的稳定性和可靠性。-Using Matlab image processing functions on the image pickup head collected instrument image analysis, to give the instruction value, while using dll technology, called the virtual instrument programming software LabVIEW, obtained from the output corresponding to the calculated value, the pointer Instrumentation automatic monitoring, increasing the stability and reliability of the whole system.