Yoshihiko Sasaki

Work place: Sasaki Green Tea Company, Japan

E-mail: teafoods@lily.ocn.ne.jp


Research Interests:


Yoshihiko Sasaki received BS degree from Tokyo Agriculture University in 1981. He was with Ogasa Green Tea Co. Ltd.\in 1982. He became President of Ogasa Green Tea Company. in 1993. He is now President of Sasaki Green Tea Company since 2003.

Author Articles
Appropriate Tealeaf Harvest Timing Determination Based on NIR Images

By Kohei Arai Yoshihiko Sasaki Shihomi Kasuya Hideto Matusura

DOI: https://doi.org/10.5815/ijitcs.2015.07.01, Pub. Date: 8 Jun. 2015

Method for most appropriate tealeaves harvest timing with Near Infrared (NIR) camera images is proposed. In the proposed method, NIR camera images of tealeaves are used for estimation of nitrogen content in tealeaves. The nitrogen content is highly correlated to Theanine (amid acid) content in tealeaves. Theanine rich tealeaves taste good. Therefore, tealeaves quality can be estimated with NIR camera images. Also, leaf area of tealeaves is highly correlated to NIR reflectance of tealeaf surface. Therefore, not only tealeaf quality but also harvest mount can be estimated with NIR camera images. Experimental results shows the proposed method does work for estimation of appropriate tealeaves harvest timing with NIR camera images.

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