탑-뷰 변환과 빔-레이 모델을 이용한 영상기반 보행 안내 시스템Vision-based Walking Guidance System Using Top-view Transform and Beam-ray Model
- Other Titles
- Vision-based Walking Guidance System Using Top-view Transform and Beam-ray Model
- Authors
- 림청; 한영준; 한헌수
- Issue Date
- Dec-2011
- Publisher
- 한국컴퓨터정보학회
- Keywords
- 보행 안내 시스템; 탑-뷰 변환; 옵티컬 프로우; 멀티모달 정보 변환; walking guidance system; top-view transform; optical flow; multimodal information transform; walking guidance system; top-view transform; optical flow; multimodal information transform
- Citation
- 한국컴퓨터정보학회논문지, v.16, no.12, pp.93 - 102
- Journal Title
- 한국컴퓨터정보학회논문지
- Volume
- 16
- Number
- 12
- Start Page
- 93
- End Page
- 102
- URI
- http://scholarworks.bwise.kr/ssu/handle/2018.sw.ssu/14182
- ISSN
- 1598-849X
- Abstract
- This paper presents a walking guidance system for blind pedestrians in an outdoor environment using just one single camera. Unlike many existing travel-aid systems that rely on stereo-vision, the proposed system aims to get necessary information of the road environment by using just single camera fixed at the belly of the user. To achieve this goal, a top-view image of the road is used, on which obstacles are detected by first extracting local extreme points and then verified by the polar edge histogram. Meanwhile, user motion is estimated by using optical flow in an area close to the user. Based on these information extracted from image domain, an audio message generation scheme is proposed to deliver guidance instructions via synthetic voice to the blind user. Experiments with several sidewalk video-clips show that the proposed walking guidance system is able to provide useful guidance instructions under certain sidewalk environments.
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Collections - College of Information Technology > ETC > 1. Journal Articles
- College of Information Technology > Department of Smart Systems Software > 1. Journal Articles
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