Automatic Verification of Intelligent Electricity Meter with Image Processing and Digit Recognition

Abstract

The intelligent electricity meter is adopted widely in the power system. To improve the verification efficiency and decrease the artificial error, realizing automatic verification of the intelligent electricity meter is necessary. The image of the intelligent electricity meter is collected with the camera, and the image processing is conducted, including region positioning and segmentation, tilt correction, gray scale, smoothing, binarization, sharpening, discrete point removal and edge detection. After the image processing, the decimal point is positioned, the negative sign is judged, and the digit recognition is conducted. The results show that the verification efficiency is improved greatly than the manual operation.