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Laser Speckle Measurement System for Plant Vigor Detection
Satoshi Shintani,Hiroaki Ishizawa,Takashi Miki,Hiroyuki Kanai 제어로봇시스템학회 2009 제어로봇시스템학회 국제학술대회 논문집 Vol.2009 No.8
This paper describes a new measuring method of plant vigor by using Laser speckle pattern. Furthermore, this proposes a practical application of this presented measurement system. The measuring instrument is consisted by a He-Ne Laser as the light source, and a set of optics, such as reflectors, a beam expander. The speckle pattern could be measured by a CCD camera through lenses. A Japanese morning glory (Ipomoea nil) was used as the sample plant. Their intact leaves were measured the speckle pattern images. The optimal laser light wave length was studied based on the biological concerns. The relationship has been obtained between the feature of the images and the chlorophylldegradation. It would be expected that the symptom of plant could be detected by measuring the Laser speckle pattern.