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17 May 2013 Efficient plant growth using automatic position-feedback laser light irradiation
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The plant growth based on the scanning laser beam is newly developed. Three semiconductor lasers with three primary colors, i.e., blue, green and red are used. Here, the laser scanned position is restricted only to the plant leaves, where the light illumination is needed. The feedback system based on the perspective projection is developed. The system consists of the automatic position correction from the camera image. The automatic image extraction of the leaf parts is also introduced. The electric power needed for this system is as small as 6.25% compared with the traditional white fluorescent lamp. Furthermore, experimental results show that the red-color laser light is particularly efficient for the growth of the radish sprouts.
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Yoshiaki Kakinoki, Yuya Kato, Kosuke Ogawa, Akira Nakao, Zenshiro Okai, and Toshio Katsuyama "Efficient plant growth using automatic position-feedback laser light irradiation", Proc. SPIE 8881, Sensing Technologies for Biomaterial, Food, and Agriculture 2013, 888102 (17 May 2013);

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