| Presentation | 2007-03-15 Fog density judgment by in-vehicle camera images and millimeter-wave radar data Kenji MORI, Tomokazu TAKAHASHI, Ichiro IDE, Hiroshi MURASE, Takayuki MIYAHARA, Yukimasa TAMATSU, |
|---|---|
| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | We propose a method of judging fog density using in-vehicle camera and millimeter-wave(mm-W) radar for driving support in foggy conditions. Behind this, there is the growing interest in driving support technologies of recent years. It is known that accident rates in bad weather conditions are about 17 times higher than that in fair ones. Especially under foggy conditions, drivers are not aware, though fog negatively influences human perception. It is the cause of making dangerous situations. From this, a driving support system, such as danger alerts or automatic lighting of fog lamps is expected. Considering these problems, a method of judging fog density by using in-vehicle camera and mm-W radar is proposed in this report. To evaluate fog density, the scattered coefficient in Koschmieder's model is used. This can be calculated from the change of the variance of brightness between the captured vehicle image and a vehicle image captured in a fair condition and the distance to the vehicle. The proposed method classifies the image into three classes of fog density from calculated scattered coefficient. To evaluate the performance of the proposed method, we compare the judgments by the human subjects and the proposed method. From this, a concordance rate acheved 84%. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Weather Recognition / Fog / Visibility / ITS |
| Paper # | PRMU2006-249 |
| Date of Issue |
| Conference Information | |
| Committee | PRMU |
|---|---|
| Conference Date | 2007/3/8(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | |
| Vice Chair | |
| Secretary | |
| Assistant | |
| Paper Information | |
| Registration To | Pattern Recognition and Media Understanding (PRMU) |
|---|---|
| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Fog density judgment by in-vehicle camera images and millimeter-wave radar data |
| Sub Title (in English) | |
| Keyword(1) | Weather Recognition |
| Keyword(2) | Fog |
| Keyword(3) | Visibility |
| Keyword(4) | ITS |
| 1st Author's Name | Kenji MORI |
| 1st Author's Affiliation | Graduate School of Information Science, Nagoya University() |
| 2nd Author's Name | Tomokazu TAKAHASHI |
| 2nd Author's Affiliation | Graduate School of Information Science, Nagoya University |
| 3rd Author's Name | Ichiro IDE |
| 3rd Author's Affiliation | Graduate School of Information Science, Nagoya University |
| 4th Author's Name | Hiroshi MURASE |
| 4th Author's Affiliation | Graduate School of Information Science, Nagoya University |
| 5th Author's Name | Takayuki MIYAHARA |
| 5th Author's Affiliation | DENSO CORPORATION |
| 6th Author's Name | Yukimasa TAMATSU |
| 6th Author's Affiliation | DENSO CORPORATION |
| Date | 2007-03-15 |
| Paper # | PRMU2006-249 |
| Volume (vol) | vol.106 |
| Number (no) | 605 |
| Page | pp.pp.- |
| #Pages | 6 |
| Date of Issue | |