Deep learning-based bill OCR (Optical Character Recognition) method

The invention provides a bill OCR (Optical Character Recognition) method based on deep learning in the technical field of optical character recognition. The method comprises the following steps: step S10, collecting a large number of different types of bill images; step S20, labeling and expanding each bill image to obtain a training data set; s30, creating a bill classification model, a character detection model, a character direction classification model and a character recognition model based on deep learning; s40, respectively training a bill classification model, a character detection model, a character direction classification model and a character recognition model by using the training data set; and S50, performing intelligent recognition on a to-be-recognized bill by using the trained bill classification model, the character detection model, the character direction classification model and the character recognition model. The method has the advantage that the bill character recognition precision and