tailieunhanh - Báo cáo hóa học: " Research Article An Omnidirectional Stereo Vision-Based Smart Wheelchair"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article An Omnidirectional Stereo Vision-Based Smart Wheelchair | Hindawi Publishing Corporation EURASIP Journal on Image and Video Processing Volume 2007 Article ID 87646 11 pages doi 2007 87646 Research Article An Omnidirectional Stereo Vision-Based Smart Wheelchair Yutaka Satoh and Katsuhiko Sakaue Information Technology Research Institute National Institute of Advanced Industrial Science and Technology AIST Central 2 Umezono 1-1-1 Tsukuba Ibaraki 305-8568 Japan Received 31 December 2006 Accepted 23 May 2007 Recommended by Dimitrios Tzovaras To support safe self-movement of the disabled and the aged we developed an electric wheelchair that realizes the functions of detecting both the potential hazards in a moving environment and the postures and gestures of a user by equipping an electric wheelchair with the stereo omnidirectional system SOS which is capable of acquiring omnidirectional color image sequences and range data simultaneously in real time. The first half of this paper introduces the SOS and the basic technology behind it. To use the multicamera system SOS on an electric wheelchair we developed an image synthesizing method of high speed and high quality and the method of recovering SOS attitude changes by using attitude sensors is also introduced. This method allows the SOS to be used without being affected by the mounting attitude of the SOS. The second half of this paper introduces the prototype electric wheelchair actually manufactured and experiments conducted using the prototype. The usability of the electric wheelchair is also discussed. Copyright 2007 Y. Satoh and K. Sakaue. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION The purpose of this work is to enhance the abilities of the disabled and the aged and to support their self-movement by smart electric wheelchairs. An electric wheelchair is a device used to compensate for .