| Presentation | 2004/9/21 Spot Speed Detection of Vehicles Using Line Sensor Cameras Shunji Katahara, Masayoshi Aoki, |
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| PDF Download Page | PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We propose one-directional traffic flow measurement method using line sensor cameras. Line sensor cameras are installed in overhead location with longitudinal alignment. They shoot real traffic scene in downward direction. Line sensor camera outputs pseudo two-dimensional image that consists of space domain and time domain. We detect vehicles along time axis from information about pixel values at each line of a slit. Standard deviation is effective to detect bright color vehicles under the correct or over luminous exposure. We use change of standard deviation and average of a line of a slit as well as standard deviation to detect dark color vehicles under the under-luminous-exposure. We detect occupancy, time headway and time between two cars from each line sensor camera. In double slit configuration, we detect spot speed of vehicles by the time difference of its appearance at each slit. We estimate vehicle length by normalizing the vehicle region. We also divide vehicles into type of vehicle by length. We apply our proposed method into a real traffic scene. Experimental results show the effectiveness of our proposed method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Vehicle detection / Traffic flow measurement / Line sensor camera / Image processing / Standard deviation |
| Paper # | ITS2004-19 |
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| Conference Information | |
| Committee | ITS |
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| Conference Date | 2004/9/21(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
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| Vice Chair | |
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| Paper Information | |
| Registration To | Intelligent Transport Systems Technology (ITS) |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Spot Speed Detection of Vehicles Using Line Sensor Cameras |
| Sub Title (in English) | |
| Keyword(1) | Vehicle detection |
| Keyword(2) | Traffic flow measurement |
| Keyword(3) | Line sensor camera |
| Keyword(4) | Image processing |
| Keyword(5) | Standard deviation |
| 1st Author's Name | Shunji Katahara |
| 1st Author's Affiliation | Faculty of engineering, Seikei University() |
| 2nd Author's Name | Masayoshi Aoki |
| 2nd Author's Affiliation | Faculty of engineering, Seikei University |
| Date | 2004/9/21 |
| Paper # | ITS2004-19 |
| Volume (vol) | vol.104 |
| Number (no) | 325 |
| Page | pp.pp.- |
| #Pages | 8 |
| Date of Issue | |