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A Musical Note Primitive Segmentation Method Based on Image Processing and Musical Note Knowledge

A technology of image processing and musical notes, applied in character and pattern recognition, music auxiliary equipment, musical instruments, etc., can solve the problem of low efficiency of primitive segmentation

Active Publication Date: 2016-08-03
SHENYANG LIGONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, Northwestern Polytechnical University and Xi'an Conservatory of Music are cooperating to carry out research on printed optical music score recognition technology, but it still occupies a very important position at home and abroad, but the efficiency of this method for the segmentation of primitives is not high and needs to be further improved

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  • A Musical Note Primitive Segmentation Method Based on Image Processing and Musical Note Knowledge
  • A Musical Note Primitive Segmentation Method Based on Image Processing and Musical Note Knowledge
  • A Musical Note Primitive Segmentation Method Based on Image Processing and Musical Note Knowledge

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Embodiment Construction

[0026] A musical note primitive segmentation method based on image processing and musical note knowledge, specifically comprising the following steps:

[0027] (1) Use the projection method to delete the spectral lines to obtain notes without spectral lines.

[0028] (2) Expand the note obtained in the previous step vertically and deform it into a long strip.

[0029] (3) Transpose the binary image of the musical score, use the projection method to delete the image2 of the spectral line, and use the binary image image1 and image2 without the spectral line to make a difference to obtain the spectral line.

[0030] (4) Use image2 to perform linear horizontal expansion to obtain the intersection of the long strip and the spectral line to obtain a small spectral line puxian1 corresponding to the position of the note, and use the small spectral line puxian1 to horizontally expand the long strip and spectral line puxian to intersect to obtain a regular small spectral line. Assign i...

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Abstract

The invention discloses a note element division method based on image processing and note knowledge. The note knowledge is that the note shape (hollow or solid) represents length of the note and the position of the note on the staff represents pitch of the note. Due to the fact that the notes are various in space, a staff object needs to be divided into the most basic elements in order to relieve staff recognition burden and improve recognition rate. The note element division method based on music knowledge and Boolean calculation is provided by making use of the notes and the sounding rules of the notes, the staff lines are removed with the method of projecting, and then the staff is divided into elements which contain all characteristics of the notes and the staff lines by means of Boolean calculation, expansion and corrosion.

Description

technical field [0001] The invention relates to the technical field of image processing, especially in the field of application development of digitized music scores such as digital music libraries. Background technique [0002] Optical music score technology is a mainstream technology developed this year to realize the digitization of paper music scores. Different from traditional image storage formats, optical scanning is used to compress and store score images, but to record the music content expressed by score. Therefore, the required The storage space is smaller, and it can be easily edited, processed, printed, broadcast or played in real time. OMR technology provides an intelligent, efficient and new way for the digitization of paper scores, which can be widely used in computer-aided music teaching, digital music library construction, Internet music search, computer music synthesis and other fields. [0003] The foreign research on OMR began in the late 1960s. At that...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/20G10G3/04
Inventor 杨丽岳明凯焦志刚秦洁方瓔翰
Owner SHENYANG LIGONG UNIV