1. Zhang Y.Q., Jiang J.:The effects of water stress on the physiological ecological processes of winter wheat leaves. Res. Arid Areas. 03–30 (2001)
2. Zakaluk, R., Sri, Ranjan R.: Artificial neural network modelling of leaf water potential for potatoes using RGB digital images: a greenhouse study. Potato Res. 4, 72–75 (2007)
3. Sun, R.D., Yu, H.Y., Yu, C.L.: Research on non-destructive detecting of cucumber leave water content based on image procession. J. Agric. Mech. Res. 7, 87–89 (2008)
4. Nie, G.J., Zhang, Z.F., Xia, Y.M., et al.: Fingerprint image segmentation algorithm based on mathematical morphology and mean variance. J. Nanjing Voc. Inst. Ind. Technol. 11(4), 38–40 (2011)
5. Shao, K., Xing, M., Zhong, Y., et al.: The machine recognition for population feature of wheat images based on BP neural network. J. Integr. Agric. 1(8), 885–889 (2002)