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Master's Dissertation
DOI
https://doi.org/10.11606/D.82.2008.tde-25042008-151254
Document
Author
Full name
Vinicius Ferraz Guimarães
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 2008
Supervisor
Committee
Pereira, José Carlos (President)
Guido, Rodrigo Capobianco
Montagnoli, Arlindo Neto
Title in Portuguese
Estabilização de imagens de videolaringoscopia
Keywords in Portuguese
Estabilização de imagens
Quimografia
Videolaringoscopia
Abstract in Portuguese
Nesse trabalho foram utilizadas e analisadas diferentes técnicas computacionais para estabilização de imagens de videolaringoscopia, adquiridas por meio de videostroboscopia, a fim de remover os movimentos indesejados provenientes do operador da câmera e do paciente durante a gravação, de modo a melhorar sua qualidade. Com um vídeo estabilizado podemos obter uma quimografia, que é um exame que permite observar os padrões de abertura e fechamento das pregas vocais durante a fonação, com boa qualidade. As técnicas utilizadas na estabilização foram correlação espacial, correlação de fase e Optical Flow.
Title in English
Image stabilization for videolaringoscopy
Keywords in English
Image stabilization
Kymography
Videolaringoscopy
Abstract in English
In this work, different computational techiniques were used and evaluated for image stabilization of videolaringoscopy scenes, so that the unwanted movements coming from cameraman and patient's moviments can be removed, thus improving their quality. After stabilizing the video, we can get a kymography, an examination which allows us to visualize the vibratory pattern of vocal fold, with a good quality. The techniques used were spatial correlation, phase correlation and Optical Flow.
 
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Publishing Date
2010-04-28
 
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