| Presentation | 2018-08-30 Estimation of Water Stress of Plant by the Analysis of Natural Frequency of Leaf using CCD Camera 2 Motoaki Sano, Chiharu Uchikawa, Yutaka Nakagawa, Takeyuki Ohdaira, Takashi Shirakawa, Tsuneyoshi Sugimoto, |
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| PDF Download Page |  PDF download Page Link |
| Abstract(in Japanese) | (See Japanese page) |
| Abstract(in English) | In order to realize optimum irrigation control in soil cultivation, we focus on the change of the natural frequency of leaf. And we found so far that the natural frequency of leaf has diurnal change, and that when the water is sufficient, the natural frequency decreases at night and rises at daytime, but that under the water stress, the natural frequency drops at not night but daytime. Also, last time, we reported that a general purpose CCD camera was enough for the measurement instead of laser displacement sensor or high speed camera. In this report, we propose a method to find the natural frequency of leaf by dividing the frame image into squares and checking the change of the average pixel value of each rectangular area without using correlation tracking method. |
| Keyword(in Japanese) | (See Japanese page) |
| Keyword(in English) | Water stress of plant / Natural frequency of leaf / CCD camera / Automatic measurement |
| Paper # | US2018-44 |
| Date of Issue | 2018-08-23 (US) |
| Conference Information | |
| Committee | US |
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| Conference Date | 2018/8/30(1days) |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Tokyo Institute of Technology |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Chair | Shinichi Takeuchi(Toin Univ. of Yokohama) |
| Vice Chair | Minoru Kurosawa(Tokyo Inst. of Tech.) / Jun Kondo(Shizuoka Univ.) |
| Secretary | Minoru Kurosawa(Univ. of Tokyo) / Jun Kondo(Kanagawa Univ.) |
| Assistant | Daisuke Koyama(Doshisha Univ.) |
| Paper Information | |
| Registration To | Technical Committee on Ultrasonics |
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| Language | JPN |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Estimation of Water Stress of Plant by the Analysis of Natural Frequency of Leaf using CCD Camera 2 |
| Sub Title (in English) | |
| Keyword(1) | Water stress of plant |
| Keyword(2) | Natural frequency of leaf |
| Keyword(3) | CCD camera |
| Keyword(4) | Automatic measurement |
| 1st Author's Name | Motoaki Sano |
| 1st Author's Affiliation | Toin University of Yokohama(Toin Univ.) |
| 2nd Author's Name | Chiharu Uchikawa |
| 2nd Author's Affiliation | Toin University of Yokohama(Toin Univ.) |
| 3rd Author's Name | Yutaka Nakagawa |
| 3rd Author's Affiliation | Toin University of Yokohama(Toin Univ.) |
| 4th Author's Name | Takeyuki Ohdaira |
| 4th Author's Affiliation | Toin University of Yokohama(Toin Univ.) |
| 5th Author's Name | Takashi Shirakawa |
| 5th Author's Affiliation | Toin University of Yokohama(Toin Univ.) |
| 6th Author's Name | Tsuneyoshi Sugimoto |
| 6th Author's Affiliation | Toin University of Yokohama(Toin Univ.) |
| Date | 2018-08-30 |
| Paper # | US2018-44 |
| Volume (vol) | vol.118 |
| Number (no) | US-199 |
| Page | pp.pp.19-24(US), |
| #Pages | 6 |
| Date of Issue | 2018-08-23 (US) |