2010 Fiscal Year Final Research Report
Workspace Recognition Assisting for the Visually Impaired by Clock-Position Navigation of Hand
| Project/Area Number |
20500798
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Educational technology
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| Research Institution | Tsukuba University of Technology |
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Principal Investigator |
MIYAKAWA Masahiro Tsukuba University of Technology, 名誉教授 (70248748)
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| Co-Investigator(Kenkyū-buntansha) |
TATSUMI Hisayuki 筑波技術大学, 保健科学部, 教授 (30188271)
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| Co-Investigator(Renkei-kenkyūsha) |
MURAI Yasuyuki 日本薬科大学, 薬学部, 准教授 (30373054)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 視覚障害補償 / クロックポジション / 手の誘導 / 近接状況認識 / 空間把握 / 距離場空間モデル |
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| Research Abstract |
We propose an arm-navigation system which assists a visually impaired person with navigating his arm to an object on the table. This is achieved by indicating the direction of the object with its "clock-position" and simultaneously indicating the velocity of the hand by a sound signal. We have adopted optical tracking of markers attached both on the hand and objects, instead of scene analysis in order to assist the navigation in real-time. The most important aspect in providing such assistance is to help the visually impaired person create a cognitive map of the workspace. Therefore, we have tried to provide spatial information of the workspace obtained by using the geometric modeler of space: the Distance Field Model (DFM). Furthermore, we found that the followings are effective : (1) the velocity of the hand is determined by a fuzzy control rule, (2) degrees of congestion on the table is judged by applying a neural network pattern recognizer on the DFM data of the workspace and it is conveyed to the user.
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