J. Li and L. Xue, A study on navel orange grading system based on computer vision, Acta Agriculturae Universitatis Jiangxiensis, vol.28, issue.2, pp.304-307, 2006.

T. Brosnan and S. D. , Improving quality inspection of food products by computer vision??????a review, Journal of Food Engineering, vol.61, issue.1, pp.61-64, 2004.
DOI : 10.1016/S0260-8774(03)00183-3

T. Anderson, Back in the studio-Visual Studio, Personal computer world, pp.148-149, 2007.

C. H. He, X. F. Zhang, and Y. C. Hu, A study on the improved algorithm for Sobel on image edge detection, J]. Optical Technique, issue.3, pp.38323-327, 2012.

L. Cao, Machine recognition of citrus variety based on the fractal dimensions of perimeterarea[J] . Transactions of the CSAE, pp.351-355

L. Cao, Z. P?wen, and L. Y?shen, Sugar Content and the Valid Acidity Test of the Citrus Based on the Fractal Dimensions of Hue, Transactions of the Chinese Society for Agricultural Machinery, pp.41143-148, 2010.