Research on the Identification and Reading Method of Pointer Instrument Based on Improved YOLOv5 Light Weight Model
To solve problems such as low reading precision,poor robustness,and lack of real-time automatic reading of point-er meters,this paper puts forward a method of identification and reading of pointer meters based on a lightweight model.First,the improved YOLOv5 is used to identify and locate the position of the instrument to be detected in the complex scene,and the instru-ment area is extracted.Then,the instrument image is corrected by feature point matching and perspective transformation.Finally,the M-LSD algorithm is used to extract the pointer and calculate the scale reading of the pointer by straight line fitting.The experi-mental results show that the maximum error of the proposed method is 0.05mA,and the proposed method has good robustness,ac-curacy,and real-time performance within the minimum scale range,and can meet the practical application in different complex scenarios.
Pointer instrumentYOLOv5Identification and positioningImage correctionLine fittingInstrument reading
万方数据
维普
