| Project/Area Number |
14550430
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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 |
Measurement engineering
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| Research Institution | Ritsumeikan University |
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Principal Investigator |
NAKANISHI Tsunehiko Faculty of Science and Engineering, Electric and Electronics, Professor, 理工学部, 教授 (40066725)
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| Project Period (FY) |
2002 – 2004
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| Project Status |
Completed (Fiscal Year 2004)
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| Budget Amount *help |
¥2,800,000 (Direct Cost: ¥2,800,000)
Fiscal Year 2004: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2003: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 2002: ¥900,000 (Direct Cost: ¥900,000)
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| Keywords | traffic flow measurement / image processing measurement / frequency analysis / 交通量検知器 |
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| Research Abstract |
It is necessary to survey the traffic flow characteristics on each road for the automobile traffic control and information providence to assist safety traffic. The traffic flow characteristics can be shown with speed, numbers of vehicles others. A measurement system of vehicle speed using video camera and its brightness analysis was proposed on this paper. The blur on the image was paid attention above all. Since a blur on the image can be measured by frequency analysis, the possibility to measure vehicle speed by using the blur image was considered.
However because of partial brightness noise, vehicle length component are included other than the blur component including the information of vehicle speed. Two filters are introduced into the brightness domain and frequency domain to except from unnecessary components. It is possible to separate between vehicle speed component and vehicle length component clearly by using these filters. And the possibility to measure vehicle speed can be found.
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