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79th Annual Meeting of the German Society of Oto-Rhino-Laryngology, Head and Neck Surgery

German Society of Oto-Rhino-Laryngology, Head and Neck Surgery

30.04. - 04.05.2008, Bonn

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Automatic categorization of laryngeal images using the multiple feature sets

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  • Virgilijus Uloza - Univ. of Medicine, Dept. ORL, Kaunas, Litauen
  • corresponding author Antanas Verikas - Univ. of Technology, Dept. of Applied Electronics, Kaunas, Litauen
  • Adas Gelzinis - Univ. of Technology, Dept. of Applied Electronics, Kaunas, Litauen
  • D. Valincius - Univ. of Technology, Dept. of Applied Electronics, Kaunas, Litauen
  • Marija Bacauskiene - Univ. of Technology, Dept. of Applied Electronics, Kaunas, Litauen

Deutsche Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie. 79. Jahresversammlung der Deutschen Gesellschaft für Hals-Nasen-Ohren-Heilkunde, Kopf- und Hals-Chirurgie. Bonn, 30.04.-04.05.2008. Düsseldorf: German Medical Science GMS Publishing House; 2008. Doc08hnod321

The electronic version of this article is the complete one and can be found online at: http://www.egms.de/en/meetings/hnod2008/08hnod321.shtml

Published: April 22, 2008

© 2008 Uloza et al.
This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by-nc-nd/3.0/deed.en). You are free: to Share – to copy, distribute and transmit the work, provided the original author and source are credited.

Outline

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The aim: An approach to integrating the global and local kernel-based automated analysis of vocal fold images aiming to categorize laryngeal diseases is presented in this study.

Methods: This study uses a set of 785 digital microlaryngoscopic images. The images were acquired during routine direct microlaryngoscopy employing the Moller-Wedel Universa 300 surgical microscope. The 3-CCD Elmo color video camera of 768x576 pixels was used to record the images. A rather common, clinically discriminative group of laryngeal diseases was chosen for the analysis, i.e. mass lesions of vocal folds.

This study is concerned with an automated analysis of microlaryngoscopic images aiming to categorize the images into three decision classes, namely healthy, nodular (localized thickenings): nodules, polyps, and cysts, and diffuse: papillomata, hyperplastic laryngitis with keratosis, and carcinoma mass lesions. The problem is treated as an image analysis and classification task. Aiming to obtain a comprehensive description of laryngeal images, multiple feature sets exploiting information on image color, texture, geometry, image intensity gradient direction, and frequency content are extracted. A separate support vector machine (SVM) is used to categorize features of each type into the decision classes.

Results: The final image categorization is then obtained based on the decisions provided by a committee of support vector machines. Bearing in mind a high similarity of the decision classes, the correct classification rate of over 94% obtained when testing the system on 785 microlaryngoscopic images is rather promising.