[2] C Li, F Takeda, M Zhang et al. Transactions of the ASABE, 60, 1489(2017).

[3] Y S Li, X Y Pan, L J Sun et al. Journal of the Science of Food and Agriculture, 99, 1709(2019).

[6] Y He, H Jiang, C Zhang et al. Applied Sciences-Basel, 6, 450(2016).

[8] Y Jiang, C Y Li, M Y Zhang et al. Biosystems Engineering, 192, 159(2020).

[9] M H Hu, Z D Wang, G T Zhai. Sensors, 18, 1126(2018).

[10] L M Azizah, S Riyadi, S F Umayah et al. Deep Learning Implementation Using Convolutional Nerual Network in Mangosteen Surface Defect Detection. 2017 7th IEEE International Conference on Control System, Computing and Engineering (ICCSCE), 242(2017).

[11] Yuhao Bai, Jichao Huang, Yingjun Xiong et al. Postharvest Biology and Technology, 156, 110943(2019).

[14] K He, S Ren, X Zhang et al. Deep Residual Learning for Image Recognition, 2016 IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 770(2016).