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- SHIMIZU Hiroshi
- Kyoto University
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- MA Zhiyu
- Tokyo University of Agriculture and Technology
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- KIONG CHONG Vui
- Kyoto University
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- NISHIZU Takahisa
- Gifu University
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- KONDO Naoshi
- Kyoto University
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抄録
An image processing system for investigating plant morphological characteristics of two or more plants was developed and demonstrated. A CCD camera was mounted on a stepping motor with ten plants equally spaced around it. A computer captured and stored the image of the first plant, rotated the stepping motor 18 degrees and captured the image of the second plant. This operation was repeated until all plant images were captured. In order to achieve similar gray levels during day and night photography, image acquisition was performed using an 850 nm infrared LED as a light source as well as an infrared filter attached to the CCD camera. The stored images were analyzed using sub-pixel estimation with area-based pattern matching techniques. The reference image size within the sub-pixel pattern matching process was evaluated. It was clear that the reference image greater than 15×15 pixels in dimension was capable of detecting a 0.1 pixel displacement in plant images used as part of this research. This system was employed to measure stem elongation in ten Chrysanthemum morifolium Ramat ‘Reagan’ plants every 10 min for three days. Daily variations in stem elongation were clearly observed and it was found that stem elongation was greater during the night than during the day. Substantial increases occurred during the first two hours of night conditions.
収録刊行物
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- Environment Control in Biology
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Environment Control in Biology 46 (4), 221-231, 2008
日本生物環境工学会
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詳細情報 詳細情報について
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- CRID
- 1390001205260336512
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- NII論文ID
- 10024917605
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- NII書誌ID
- AA12029220
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- ISSN
- 18830986
- 1880554X
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- NDL書誌ID
- 9787735
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可