[2] Guyer D E, Miles G E, Schreiber M M. Transactions of the ASAE, 1986, 29: 1500.
[3] Shear S A, Thomasson J A, Meneill S G. Transactions of the ASAE, 1996, 39: 1209.
[4] Adams M L, Noryell W A, Philpot W D. Agronomy Journal, 2000, 92: 261.
[5] Tang L, Tian L, Steward B L. Transactions of the ASAE, 2000, 43: 1019.
[6] Borhan M S, Panigrahi S, Lorenzen J H. Transactions of the ASAE, 2004, 47: 599.
[7] Kim Y, Reid J F, Hansen A, et al. Proceeding of ASAE, 2001, No. 011178.
[8] Aleixos N, Blasco J. Computers and Electronics in Agriculture, 2002, l33: 121.
[9] Leckie D G, Cloney E. International Journal of Applied Earth Observation and Geoinformation, 2005, 7: 61.
[10] Sena Jr D G, Pinto F A C, Queiroz D M, et al. Biosystems Engineering, 2003, 85: 449.
[12] Gonzalez R C, Woods R E, Eddins S L. Digital Image Processing Using Matlab. USA: Peason & Prentice Hall, 2004.
[13] Gonzalez R C, Woods R E. Digital Image Processing, 2nd Edition, USA: Peason & Prentice Hall, 2002.
