| Presentation | 2023-08-29 A Study on evaluation index for step counting of PDR Hana Osawa, Masahiro Fujii, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | Pedestrian Dead Reckoning (PDR) is an alternative pedestrian location estimation method for indoor when GNSS (Global Navigation Satellite System) signals are not readily available. PDR is a method that calculates walking information such as the number of steps and direction of movement using sensor information in a smart device by a pedestrian. It is possible to calculate the amount of relative movement from the initial position. Due to the characteristics of relative position estimation, it is important to minimize the error in the calculated gait information because errors accumulate as the positioning time increases. Among the components of PDR, step detection has been used in many previous studies as an evaluation index for the difference between the estimated and true values of the cumulative number of steps. However, we expect that all step time estimates be close to the true time because the PDR is the cumulative distance traveled per step and direction of travel. In this paper, we propose a new evaluation index focusing on the time of step detection. The step detection method is evaluated by setting up an interval from the true step time to determine if the detection time is correct or incorrect, and by applying the correctness of each step to a table based on a confusion matrix to determine the reproduction rate and goodness of fit. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Pedestrian Dead Reckoning / Step Detection / Confusion Matrix / Smartwatch |
| Paper # | ITS2023-10 |
| Date of Issue | 2023-08-22 (ITS) |
| Conference Information | |
| Committee | ITS / IPSJ-ITS / IEE-ITS |
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| Conference Date | 2023/8/29(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kanto Gakuin Univ. (Kanazawa-Hakkei Campus) |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Yusuke Takatori(Kanagawa Inst. of Tech.) / Yuichi Tokunaga(Kanazawa Inst. of Tech.) / Satoshi Takahashi(Nagoya Electric Works) |
| Vice Chair | Tetsuya Manabe(Saitama Univ.) / Shintaro Ono(Fukuoka Univ.) |
| Secretary | Tetsuya Manabe(Ritsumeikan Univ.) / Shintaro Ono(Gunma Univ.) |
| Assistant | Taishi Swabe(NAIST) |
| Paper Information | |
| Registration To | Technical Committee on Intelligent Transport Systems Technology / Special Interest Group on Intelligent Transport Systems and Smart Community / Technical Meeting on Intelligent Transport Systems |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | A Study on evaluation index for step counting of PDR |
| Sub Title (in English) | |
| Keyword(1) | Pedestrian Dead Reckoning |
| Keyword(2) | Step Detection |
| Keyword(3) | Confusion Matrix |
| Keyword(4) | Smartwatch |
| 1st Author's Name | Hana Osawa |
| 1st Author's Affiliation | Utsunomiya University(Utsunomiya Univ.) |
| 2nd Author's Name | Masahiro Fujii |
| 2nd Author's Affiliation | Utsunomiya University(Utsunomiya Univ.) |
| Date | 2023-08-29 |
| Paper # | ITS2023-10 |
| Volume (vol) | vol.123 |
| Number (no) | ITS-169 |
| Page | pp.pp.16-21(ITS), |
| #Pages | 6 |
| Date of Issue | 2023-08-22 (ITS) |