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Proceedings Paper

Relationship between operational efficiency and field-refreshing rates of stereoscopic image-pairs in teleoperational work
Author(s): Takafumi Ienaga; Katsuya Matsunaga; Kazunori Shidoji; Kazuaki Goshi; Yuji Matsuki; Hiroki Nagata
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Paper Abstract

Most teleoperations require both wide vision for work space recognition and fine vision for the recognition of the object structure. To achieve a high operational efficiency in teleoperations, we developed the Q stereoscopic video system which was constructed by four video sets. Therefore, it requires for video channels to transmit video signals. However, four channels are not always free for the video system. Presently, only six wireless channels are assigned for controlling the machines at Japanese construction sites. To reduce the number of channels for video images, we tried to send the images from two cameras in a single channel alternatively. It was not clear how many field-refreshing rates of video images were necessary for teleoperations. We researched the relationship between operational efficiency and the number of field-refreshing rates per second. In the experiment, subjects were required to pick a cylindrical object up and insert it into a hole by operating a tele-robot under stereoscopic images in 60 Hz and 30 Hz field-refreshing rates. The results showed no significant differences between the two conditions in the completion time and the number of errors. Therefore, it is possible to reduce the field- refreshing rates by half, and provide two channels the Q stereoscopic video system without reducing the operational efficiency.

Paper Details

Date Published: 22 June 2001
PDF: 8 pages
Proc. SPIE 4297, Stereoscopic Displays and Virtual Reality Systems VIII, (22 June 2001); doi: 10.1117/12.430804
Show Author Affiliations
Takafumi Ienaga, Kyushu Univ. (Japan)
Katsuya Matsunaga, Kyushu Univ. (Japan)
Kazunori Shidoji, Kyushu Univ. (Japan)
Kazuaki Goshi, Kyushu Univ. (Japan)
Yuji Matsuki, Kyushu Univ. (Japan)
Hiroki Nagata, Kyushu Univ. (Japan)

Published in SPIE Proceedings Vol. 4297:
Stereoscopic Displays and Virtual Reality Systems VIII
Mark T. Bolas; Andrew J. Woods; Mark T. Bolas; John O. Merritt; Stephen A. Benton, Editor(s)

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