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Method for automatic recognition and playing of numbered musical notation image

An automatic identification and numbered notation technology, applied in the field of optical music notation recognition, can solve problems such as the great influence on the accuracy of recognition, tilted numbered notation image, automatic identification of numbered notation and the advent of intelligent playback methods, etc.

Active Publication Date: 2014-01-15
BEIHANG UNIV
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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.

Method used

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  • Method for automatic recognition and playing of numbered musical notation image
  • Method for automatic recognition and playing of numbered musical notation image
  • Method for automatic recognition and playing of numbered musical notation image

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Embodiment Construction

[0100] In order to better understand the technical solutions of the present invention, the following further describes the embodiments of the present invention:

[0101] The invention is implemented in the MATLAB R2010b language environment, and the computer configuration: Pentium(R) Dual-core CPUT42002.00GHz.

[0102] see figure 2 , The present invention is a method for automatic recognition and performance of numbered musical notation images. The specific steps of the method are as follows:

[0103] Step 1: "Preprocessing of numbered musical notation image"

[0104] (1) Read a numbered musical notation image in the matlab2010b environment.

[0105] (2) Detect the color area in the numbered musical notation image, and delete all pixels in the color area.

[0106] (3) Convert the image after the completion of step (2) into a grayscale image, and perform Hough transform on the grayscale image

[0107] f ( x , y ) ⇒ H ( a , ρ )

[0108] ρ=xcos(a)+ysin(a), a...

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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 musical notation is one of the most familiar and commonly used musical scores, but currently in the field of Optical Music Recognition (OCR), the research focus is on staff recognition, and the research on numbered musical 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 score recognition. (2) Background technology: [0002] The invention of music score is a milestone in the history of human music. Its appearance allows people to communicate and inherit music on a relatively standard platform. Most of the excellent music works from ancient times to the present have been preserved in the form of paper sheet music. To this day, paper sheet music is still the main vehicle for expressing and describing music works. [0003] In recent years, with the rapid development of computer technology, more and more pa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/62G06K9/66G10L13/04G10L13/047
Inventor 邹征夏史振威姚连生冯亚春孙诗炎
Owner BEIHANG UNIV
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