Analysis of rotational vertigo using video and image processing

Toshiyuki Tanaka, Shunsuke Tominaga

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

Vertigo is a common disease; however, the causes are very complex and wide ranging. This indicates that a great deal of specialized knowledge and skills are indispensable in the diagnosis of vertigo. Regular doctors diagnose vertigo in many cases; however, they have little knowledge and few skills concerning vertigo. In addition, the number of vertigo patients is increasing. For these reasons, the demand for supporting diagnosis of vertigo is growing. The purpose of this study is to develop an automated computer-aided diagnostic system for vertigo using video and image processing. One of the most important indicators in diagnosing vertigo is nystagmus involuntary abnormal eye movement. To provide diagnostic support for a regular doctor, the system must be easy to use and highly accurate. This paper focuses on analyzing nystagmus with a video-oculography (VOG) technique, which is a video-based method of measuring eye movements using an external infrared charge-coupled device (CCD) camera. Previous studies using VOG techniques have encountered two main problems: the noise from blinking and slow performance. This paper proposes a simple method for resolving these problems. The proposed method can be divided into four stages: 1) detect a blink; 2) estimate the pupil position; 3) detect the pupil position and radius; and 4) calculate the rotation angle of torsional nystagmus. A total of 12000 images from three patients were used to evaluate the validity of the proposed algorithm. The algorithm removed the noise from blinking for all patients. The average error of position estimation is 0.86 and 1.4 pixels in the horizontal and vertical directions, respectively. The proposed algorithm detects the pupil with 100% accuracy and occurrence of torsional nystagmus for each patient. In conclusion, the proposed algorithm meets the requirements for diagnostic support of vertigo for a regular doctor.

本文言語English
ホスト出版物のタイトルProceedings - 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011
ページ122-127
ページ数6
DOI
出版ステータスPublished - 2011 12月 1
イベント2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011 - Shanghai, China
継続期間: 2011 10月 152011 10月 17

出版物シリーズ

名前Proceedings - 2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011
1

Other

Other2011 4th International Conference on Biomedical Engineering and Informatics, BMEI 2011
国/地域China
CityShanghai
Period11/10/1511/10/17

ASJC Scopus subject areas

  • 生体医工学
  • 健康情報学
  • 健康情報管理

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