Gongchi spectrum digitization method capable of recognizing small character content

The invention discloses a staff spectrum digitization method capable of recognizing small character content. The method comprises the following steps: carrying out color space conversion and binarization processing on an input Gongchi spectrum image; distinguishing lyrics and music score words according to the projection, and segmenting to obtain a single music score word image; recognizing the single spectral word image by using a convolutional neural network to obtain spectral word classification information; and recognizing the pitch notation words by using a convolutional network differentfrom the network to obtain small character information including tone rising and falling symbols, and finally finishing the digitalization of the Gongchi notation. By using the two convolutional neural networks, small character symbols such as tone rising and falling symbols which cannot be identified by the traditional technology can be identified, and the realization of digitalization of the Gongchi spectrum is facilit