Estimation of Rotation Angle of Oblique-viewing Endoscope by using Accelerometer
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- KURODA Yoshihiro
- Graduate School of Engineering Science, Osaka University
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- MORIGUCHI Hiroki
- Graduate School of Engineering Science, Osaka University
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- TAKIUCHI Hidekazu
- Department of Urology, Nishinomiya Municipal Central Hospital
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- IMURA Masataka
- Graduate School of Engineering Science, Osaka University
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- YAMAMOTO Shingo
- Department of Urology, Hyogo College of Medicine
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- OSHIRO Osamu
- Graduate School of Engineering Science, Osaka University
Bibliographic Information
- Other Title
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- 加速度センサによる斜視内視鏡の回転量推定
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Abstract
When using an oblique-viewing scope, the rotation of cylinder changes the optical axis of the endoscopic camera. Thus, the angle of rotation is required to estimate the viewing direction in addition to the posture of the cylinder. In a previous study, rotary encoder is used for acquisition of the rotational angle of the cylinder. However, the rotary encoder tends to be cumbersome in clinical use, because the encoder must be attached between a cylinder and a camera head. In this study, we estimate rotation angle of the cylinder by using an accelerometer. The accelerometer detects the orientation of gravity. The rotation of the cylinder is calculated from the change of the orientation of the gravity. Besides, we considered the influence of movement of the endoscope on the accelerometer and executed movement decision. The result of experiments indicated that the method enabled to estimate the rotation angle within about 3 degrees of errors when the endoscope is inclined at an angle of less than 45 degree against the horizontal plane.
Journal
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- The Japanese Journal for Medical Virtual Reality
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The Japanese Journal for Medical Virtual Reality 10 (1), 1-10, 2012
Japanese Society for Medical Virtual Reality
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Details 詳細情報について
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- CRID
- 1390282680400709760
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- NII Article ID
- 130003388614
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- ISSN
- 21872201
- 13479342
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed