The invention discloses a
handwriting blackboard writing recognition method, which belongs to the technical field of
optical character recognition and comprises the following steps: S1, inputting a to-be-detected
handwriting blackboard writing image; s2, detecting and filtering text information in the hand-written blackboard writing image by using the trained CTPN detection model so as to determine a text area; then, performing
cutting operation on the text area, and
cutting out the text area of each line; s3, carrying out preprocessing operation on the
cut text line area image, wherein the preprocessing operation comprises operations such as graying, normalization and scale zooming; s4, sequentially inputting the preprocessed image set into the trained CRNN recognition model, and performing end-to-end
text recognition to obtain text line information in the image; and S5, integrating and outputting the output text line information so as to output a recognition result of
handwriting blackboard writing. According to the method, a model combining a CTPN detection
algorithm and a CRNN
recognition algorithm is adopted, non-segmentation recognition can be carried out on the blackboard writing of the handwriting blackboard, errors caused by over-segmentation and under-segmentation are better reduced, and the recognition accuracy and robustness are improved.