6LeemansV,Manein H.Destain M F.Defects segm -entation on golden Delicious'apple by using colour machine vison[J].Comput Electron Agric,1998,20:117-130.
7Leemans V,Destain M.A real-time grading method of apple base on features extracted from defects[J].Journal of food engineering,2004,61:83-89.
8Kazuhiro Nakano.Application of neural net works to the color grading of apples[J].Comput Electron Agric.,1997(18):105-116.
9Ingrid Paulus,Eddie Schrevens.Shape characterization of new apple cultivars by fourier expansion of digitized images[J].J.Agric.Engng.Res.,1999,72:113-118.
10Kim SM,Chen P,McCarthy MJ,et al.Fruit Internal Quality Evaluation Using online Nuclear Magnetic Resonance Sensors[J].Journal of Agricultural Engineering Research,1999,74:293-301.