Analog Gauge Reader based on Image Recognition
Xingxing Li, Panpan Yin, Chao Duan, Zhi Yan · Journal of Physics Conference Series · 2020
Abstract Analog dial are widely used in modern production and life. In the fields of meter detection and meter scale value recording, the demand for automatic reading of analog dial is increasing. This paper proposes an improved method of fast reading of images, which refines the scale circle and uses the branch point extraction algorithm to extract the intersection of the scale line and the scale circle to express the scale line indirectly. Finally, the pointer reading is calculated based on the ratio of the deflection angle of the pointer to the total angle of the range.