Smear character recognition method of side-end power meter based on PCA image enhancement

Abstract

Since it is difficult for manual recording to track the rapid change of indication of the power meter, the power meter images are collected by the camera and automatically recognized and recorded to effectively overcome the disadvantages of manual recording. However, the complex scene lighting environment and smearing character shadows make it difficult to transfer captured images directly to convolutional neural networks for character recognition. A smear character recognition method of side-end power meter under complex lighting conditions is proposed in this article. First, the uneven illumination image enhancement algorithm is studied. Through the estimation of the illumination component of the image, the fusion weight is calculated by the principal component analysis for multiscale fusion, and the up-sampling and down-sampling are adopted to reduce the calculation of the algorithm and achieve the rapid image enhancement. A convolution neural network framework based on deep learning is proposed to realize the segmentation of smear characters, and the final segmented individual characters are fed into a network to identify the meter readings. The experimental results show that the proposed smear character recognition method has fast recognition speed, and the recognition rate of samples with the smear character and complex illumination reaches 99.8%, which meets the requirements of power meter character recognition and is better than other algorithms.

Smart Energy Monitoring and Analysis Method Based on Image Recognition Technology

“…The energy industry also needs to keep pace with the times and use image recognition and other technological means for smart energy monitoring and analysis. In the various links of energy production, transportation, and use, it is necessary to monitor the operation of equipment and potential safety hazards in real time [14][15][16][17][18][19][20][21]. Image recognition technology can be used to quickly and accurately identify the abnormal conditions of energy equipment, thereby improving the operating efficiency and safety of energy equipment.…”