Spectral Navigation Technology and Its Application in Positioning the Fruits of Fruit Trees
YU Xiao-lei1, 2, ZHAO Zhi-min3*
1. College of Automation Engineering, University of Aeronautics and Astronautics, Nanjing 210016, China 2. Institute for Technology, Research & Innovation, Deakin University, Geelong VIC 3217, Australia 3. College of Science, University of Aeronautics and Astronautics, Nanjing 210016, China
Abstract：An innovative technology of spectral navigation is presented in the present paper. This new method adopts reflectance spectra of fruits, leaves and branches as one of the key navigation parameters and positions the fruits of fruit trees relying on the diversity of spectral characteristics. The research results show that the distinct smoothness as effect is available in the spectrum of leaves of fruit trees. On the other hand, gradual increasing as the trend is an important feature in the spectrum of branches of fruit trees while the spectrum of fruit fluctuates. In addition, the peak diversity of reflectance rate between fruits and leaves of fruit trees is reached at 850 nm of wavelength. So the limit value can be designed at this wavelength in order to distinguish fruits and leaves. The method introduced here can not only quickly distinguish fruits, leaves and branches, but also avoid the effects of surroundings. Compared with the traditional navigation systems based on machine vision, there are still some special and unique features in the field of positioning the fruits of fruit trees using spectral navigation technology.
俞晓磊1，2, 赵志敏3* . 光谱导航技术在果树果实定位中的应用[J]. 光谱学与光谱分析, 2010, 30(03): 770-773.
YU Xiao-lei1, 2, ZHAO Zhi-min3*. Spectral Navigation Technology and Its Application in Positioning the Fruits of Fruit Trees . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(03): 770-773.
[1] Leemans V, Magein H, Destain M F. Biosystems Engineering, 2002, 83(4): 391. [2] Panigrahi S, Misra M K, Willson S. Computers and Electronics in Agriculture, 1998, 20(1): 1. [3] Reed J N, Miles S J, Butler J, et al. Journal of Agricultural Engineering Research, 2001, 78(1): 15. [4] YING Yi-bin(应义斌). Journal of Biomathematics(生物数学学报), 2001, 16(2): 234. [5] HUANG Xing-yi, WEI Hai-li, ZHAO Jie-wen(黄星奕, 魏海丽, 赵杰文). Food and Machinery(食品与机械), 2006, 22(1): 27. [6] Sarig Y. Journal of Agricultural Engineering Research, 1993, 54: 265. [7] Wang J, Maiorov M, Jeffries J B, et al. Measurement Science & Technology, 2000, 11: 1576. [8] Dupuis G, Elias M, Simonot L. Applied Spectroscopy, 2002, 56(10): 1329. [9] Petrich W, Staib A, Otto M, et al, Vibrational Spectroscopy, 2002, 28(1): 117. [10] Bacci M, Casini A, Cucci C. Journal of Cultural Heritage, 2003, 4(4): 329. [11] Fehr B W, Gerrish J C. Applied Engineering Agriculture, 1995, 11(4): 613. [12] Torii T, Takamizawa A, Okamoto T, et a1. Journal of JSAE, 2000, 62(5): 37. [13] YU Guo-ying, MAO Han-ping(于国英, 毛罕平). Journal of Agricultural Mechanization Research(农机化研究), 2007, 1: 167.
