Method for automatic recognition and playing of numbered musical notation image

Abstract

The invention relates to a method for automatic recognition and playing of a numbered musical notation image. The method comprises the three steps: step 1, numbered musical notation image preprocessing; step 2, numbered musical notation basic element recognition; and step 3, generation and playing of a digital audio. On the basis of a deep analysis on a numbered musical notation characteristic, lots of difficulties of numbered musical notation recognition are overcome and thus a complete method for automatic recognition and intelligent playing of a numbered musical notation is provided. According to the method, multiple forms of printed numbered musical notations including a printed numbered musical notation, a numbered musical notation with lyrics, a mixed musical notation with a numbered musical notation and a staff and a mixed musical notation with a numbered musical notation and a guitar musical notation and the like can be automatically recognized with over 95% accuracy. Besides, the method enables playing effects of a numbered musical notation by various instruments like a piano, a violin, and a guitar and so on to be simulated and real-time recognition and playing of the numbered musical notation to be realized.

Description

(1) Technical field: [0001] Numbered notation is one of the most familiar and commonly used music scores. However, in the field of Optical Music Recognition (OCR), the research focus is on staff recognition, while the research on numbered notation recognition is almost blank. The invention relates to a method for automatic recognition and performance of numbered musical notation images, belonging to the field of optical musical notation recognition. (two) background technology: [0002] The invention of sheet music is a milestone in the history of human music. Its appearance enables people to communicate and inherit music on a relatively standard platform. Most of the excellent music works throughout the ages have been preserved in the form of paper scores, and until today, paper scores are still the main carrier for expressing and describing music works. [0003] In recent years, with the rapid development of computer technology, more and more paper documents urgently need...

AI Technical Summary

Problems solved by technology

[0010] Technical Difficulty 4: During the input stage of scanning the numbered notation, the image of the numbered notation is often tilted. Experiments show that when the tilt angle of the numbered notation is greater than 5 degrees, it has a great impact on the recognition accuracy

[0011] Based on the above difficulties and uncertain factors, at present, the conversion of numbered notation to digital music is still done manually, and there is no complete set of automatic identification and intelligent playing methods for numbered notation.

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