Image recognition reading method for pointer instrument with circular dial plate

The invention belongs to the technical field of instrument intelligent reading, and particularly relates to an image recognition reading method for a pointer instrument with a circular dial plate, which comprises the following steps: marking, training a model, acquiring a large-view-field image, acquiring a small-view-field image, recognizing the small-view-field image, calculating an included angle and calculating instrument reading. The method has a relatively good detection effect on the detection of the pointer instrument on the petroleum refining site, and has a beneficial effect on the automatic management and operation and maintenance of the petroleum refining site. 本发明属于仪表智能读数技术领域，具体涉及一种圆形表盘的指针仪表图像识别读数方法，包括以下步骤：标注、训练模型、采集大视场图像、采集小视场图像、小视场图像识别、计算夹角以及计算仪表读数步骤；本发明对于石油炼化现场指针式仪表的检测具有比较好的检测效果，对于石油炼化现场的自动化管理和运维具有有益影响。