1. Leemans, V., Destain, M.F., Magein, H.: Quality fruit grading by colour machine vision: Defect recognition. Acta Hortic. 517, 405–412 (2000)
2. Lorestani, A.N., Omid, M., Bagheri-Shooraki, S., Borghei, A.M., Tabatabaeefar, A.: Design and evaluation of a fuzzy logic based decision support system for grading of golden delicious apples. Int. J. Agric. Biol. 8(4), 440–444 (2006)
3. Liming, X., Yanchao, Z.: Automated strawberry grading system based on image processing. Comput. Electron. Agric. 71, S32–S39 (2010)
4. Shah Rizam, M.S.B., Farah Yasmin, A.R., Ahmad Ihsan, M.Y., Shazana, K.: Non-destructive watermelon ripeness determination using image processing and artificial neural network (ANN). World Acad. Sci. Eng. Technol. 50, 538–542 (2009)
5. Razak, M.A., Mahmod, O., Mohd Nazari, A.B., Khairul Adilah, A., Rosli, R.T.: Fuzzy ripening mango index using RGB colour sensor model. J. Arts Sci. Commer. 5(2), 1–9 (2014)