Abstract
This paper builded an ocr service platform based on opencv. Cut images of license plates and characters were generated by analyzing and processing the images based on the opencv algorithm and utilizing the image big data accumulated in the production of application software in the automobile industry. Label these cut images as training data and input SVM, ANN and other trainers to train the model to recognize the characters in the new license plate image. In addition to license plate recognition, vin code recognition, driver’s license number recognition and other ocr functions can also be developed in a similar way. The platform is developed based on java language and springboot framework in order to be technically unified with other automotive industry application software. It needs to use java to call opencv c++ interface implementation, and the platform provides rest interface externally.
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