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Optical Music Recognition
Vaško, Radim ; Davídek, Daniel (referee) ; Richter, Miloslav (advisor)
The diploma thesis specifies digital methods of optical recognition of a notation, by detailed analysis of methods based on removal of notation lines and creation of a test program which automatically converts the images written in the notation into digital format. This work summarizes the knowledge from the research and practical part. In the research section, key chapters are described as OMR architecture, including processing, symbol classification, postprocessing, and more. The practical part of the thesis presents the results of the development and testing of the proposed application.
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Neural Networks for Optical Music Recognition
Vlach, Vojtěch ; Kohút, Jan (referee) ; Hradiš, Michal (advisor)
This thesis consideres the problem of optical music recognition from images to text using Artificial inteligence and neural networks. I have choosed particularly the field of printed polyphonic music (more notes and voices at the same time). The goal of this thesis is to create a model capable of recognising complex notations and its accuracy compare with previous literature and other known models. I solved the chosen problem by utilizing the Vision Transformer architecture, where I tested several network variants to find the most powerful one. And by creating a new dataset with polyphonic music. The work presents the process of creating the dataset by synthesizing images from MusicXML format using the MuseScore program. The most successful variant of the Vision Transformer architecture achieves an error rate of only 7.86 %, which is very promising for further development and utilization. The main finding is that the architecture has the potential to dominate in this field, just as it does in other areas of research, and there is a functional solution for the specific task of polyphonic music notation recognition, which has been only up for a debate until now.
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Optical Music Recognition using Deep Neural Networks
Mayer, Jiří ; Pecina, Pavel (advisor) ; Hajič, Jan (referee)
Optical music recognition is a challenging field similar in many ways to optical text recognition. It brings, however, many challenges that traditional pipeline-based recog- nition systems struggle with. The end-to-end approach has proven to be superior in the domain of handwritten text recognition. We tried to apply this approach to the field of OMR. Specifically, we focused on handwritten music recognition. To resolve the lack of training data, we developed an engraving system for handwritten music called Mashcima. This engraving system is successful at mimicking the style of the CVC- MUSCIMA dataset. We evaluated our model on a portion of the CVC-MUSCIMA dataset and the approach seems to be promising. 1
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Optical Recognition of Handwritten Music Notation
Hajič, Jan ; Pecina, Pavel (advisor) ; Fujinaga, Ichiro (referee) ; Černocký, Jan (referee)
Optical Music Recognition (OMR) is the field of computationally reading music notation. This thesis presents, in the form of dissertation by publication, contributions to the theory, resources, and methods of OMR especially for handwritten notation. The main contributions are (1) the Music Notation Graph (MuNG) formalism for describing arbitrarily complex music notation using an oriented graph that can be unambiguously interpreted in terms of musical semantics, (2) the MUSCIMA++ dataset of musical manuscripts with MuNG as ground truth that can be used to train and evaluate OMR systems and subsystems from the image all the way to extracting the musical semantics encoded therein, and (3) a pipeline for performing OMR on musical manuscripts that relies on machine learning both for notation symbol detection and the notation assembly stage, and on properties of the inferred MuNG representation to deterministically extract the musical semantics. While the the OMR pipeline does not perform flawlessly, this is the first OMR system to perform at basic useful tasks over musical semantics extracted from handwritten music notation of arbitrary complexity.
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Optical Music Recognition
Vaško, Radim ; Davídek, Daniel (referee) ; Richter, Miloslav (advisor)
The diploma thesis specifies digital methods of optical recognition of a notation, by detailed analysis of methods based on removal of notation lines and creation of a test program which automatically converts the images written in the notation into digital format. This work summarizes the knowledge from the research and practical part. In the research section, key chapters are described as OMR architecture, including processing, symbol classification, postprocessing, and more. The practical part of the thesis presents the results of the development and testing of the proposed application.
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