[1] J Xiong Y, C Huang J, N Li X et al. Computers and Electronics in Agriculture, 155, 23(2018).

[8] C Chen, J Bu J, J Zhang L et al. IEEE Transactions on Pattern Analysis and Machine Intelligence, 33, 2026(2011).

[9] F Mendoza, F Lu R, Y Cen H. Postharvest Biology and Technology, 73, 89(2012).

[10] D Li H, Z Liang Y, S Xu Q et al. Analytica Chimica Acta, 648, 77(2009).