[1] [1] BARREIRO P, MOYA A, CORREA E, et al. Prospects for the rapid detection of mealiness in apples by nondestructive NMR relaxometry［J］. Applied Magnetic Resonance, 2002, 22(3): 387-400.

[2] [2] MEHINAGIC E, ROYER G, BERTRAND D, et al. Relationship between sensory analysis, penetrometry and visible-NIR spectroscopy of apples belonging to different cultivars［J］. Food Quality and Reference, 2003, 14(5-6): 473-484.

[3] [3] BECHAR A, MIZRACH A, BARREIRO P, et al. Determination of mealiness in apples using ultrasonic measurements［J］. Biosystems Engineering, 2005, 91(3): 329-334.

[4] [4] LU R, PENG Y. Hyperspectral scattering for assessing peach fruit firmness［J］. Biosystems Engineering, 2006, 93(2): 161-171.

[5] [5] NOH H K, LU R. Hyperspectral laser-induced flurescence imaging for assessing apple fruit quality［J］. Postharvest Biology and Technology, 2007, 43(2): 193-201.

[6] [6] HUANG M, LU R. Apple mealiness detection using hyperspectral scattering technique［J］. Postharvest Biology and Technology, 2010, 58(3): 168-175.

[7] [7] LU R. Nondestructive measurement of firmness and soluble solids content for apple fruit using hyperspectral scattering images［J］. Sensing and Instrumentation for Food Qualigy and Saftety, 2007, 1(1): 19-27.

[8] [8] CENTNER V, MASSART D L, DE Noord O E, et al. Elimination of uninformative variables for multivariate calibration［J］. Analytical Chemistry, 1996, 68(21): 3851-3858.

[9] [9] SAM T Roweis, LAWRENCE K Saul. Nonlinear dimensionality reduction by locally linear embedding［J］. Science, 2000, 290(5500): 2323-2326.

[10] [10] ZHAO Gui-lin, ZHU Qi-bing, HUANG Min. LLE-SVM classification of apple mealiness based on hyperspectral scattering image［J］. Spectroscopy and Spectral Analysis, 2010, 30(10): 2739-2743.

[11] [11] LU R, HUANG M, QIN J. Analysis of hyperspectral scattering characteristics for predicting apple fruit firmness and soluble solids content［C］. SPIE, 2009, 7315: 73150I-1.

[12] [12] CHEN Bin, CHEN Dan. The application of uninformative variables elimination in near-infrared spectroscopy［J］. Spectroscopy and Spectral Analysis, 2005, 4: 26-30.

[13] [13] WANG Shuang, HUANG Min, ZHU Qi-bing. Optimal wavelength selection of hyperspectral scattering images based on UVE-PLS projection analysis［J］. Acta Photonica Sinica, 2011, 40(3): 428-432.

[14] [14] MACHO S, IUSA R, CALLAO M P, et al. Monitoring ethylene content in heterophasic copolymers by near-infrared spectroscopy standardization of the calibration model［J］. Anslytica Chimica Acta, 2001, 445(2): 213-220.