1. Zhang, M.-R., Ye, J.-S., et al. (2016). Research on effects of chicken eggshell dark spots on chicken egg storage. Food & Machinery, 32(06), 118–122.
2. Liu, Y.-Y., & Zhong, N. (2017). Research on prediction model of egg freshness based on image processing. Food & Machinery, 33(12), 103–109.
3. Wang, Q.-H., Wang, C.-Y., & Ma, M.-H. (2017). Duck eggs’ freshness detection based on machine vision technology. Journal of Chinese Institute of Food Science and Technology, 17(08), 268–274.
4. Zheng, L.-M., Yang, X., et al. (2009). Nondestructive detection of egg freshness based on computer vision. Transactions of the CSAE, 25(S2), 335–339.
5. Wang, Q.-H., Wen, Y.-X., et al. (2008). Correlation between egg freshness and morphological characteristics of light transmission image of eggs. Transactions of the CSAE, 24(03), 179–183.