2010 Fiscal Year Final Research Report
Study of the method to estimate rice-plant growth over a wide area using airborne LiDAR measurements
| Project/Area Number |
21780237
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Agricultural information engineering
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| Research Institution | Fukushima National College of Technology (2010)
Nagaoka University of Technology (2009) |
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Principal Investigator |
TAKAHASHI Kazuyoshi Fukushima National College of Technology, 建設環境工学科, 准教授 (00332651)
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| Project Period (FY) |
2009 – 2010
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| Keywords | リモートセンシング / LiDAR / 植被率 |
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| Research Abstract |
The estimation method using laser scanner measurements to monitor the vegetation coverage of rice plants over a wide area was examined in this study. Ground observations and airborne observations were carried out to obtain the data for analysis and for examination of the estimation method. As a result of the ground observation data analysis, the reproducibility of the estimation method (using the laser incident depth from the plant's crown calculated by the laser scanner data) was validated. Laser scanner measurements with a shallow incident angle were also effective in estimating the vegetation coverage in the early growth stage. The airborne LiDAR data were acquired three times in different vegetation coverage of rice plants. As a result of the LiDAR data analysis, I found that Laser pulses penetrated deeply into the rice plants at about 70 % vegetation coverage. Also I discovered it was difficult to obtain information about rice plants using LiDAR measurements with a perpendicular incident angle up to about 40% vegetation coverage.
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