Spectroscopy and Spectral Analysis, Volume. 30, Issue 10, 2739(2010)
LLE-SVM Classification of Apple Mealiness Based on Hyperspectral Scattering Image
Apple mealiness degree is an important factor for its internal quality. hyperspectral scattering, as a promising technique, was investigated for noninvasive measurement of apple mealiness. In the present paper, a locally linear embedding (LLE) coupled with support vector machine (SVM) was proposed to achieve classification because of large number of image data. LLE is a nonlinear lowering dimension method, which reveals the structure of the global nonlinearity by the local linear joint. This method can effectively calculate high-dimensional input data embedded in a low-dimensional space manifold. The dimension reduction of hyperspectral data was classified by SVM. Comparing the LLE-SVM classification method with the traditional SVM classification, the results indicated that the training accuracy obtained with the LLE-SVM was higher than that just with SVM; and the testing accuracy of the classifier changed a little before and after dimensionality reduction, and the range of fluctuation was less than 5%. It is expected that LLE-SVM method would provide an effective classification method for apple mealiness nondestructive detection using hyperspectral scattering image technique.
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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
Received: Nov. 26, 2009
Accepted: --
Published Online: Jan. 26, 2011
The Author Email: Gui-lin ZHAO (lin861103@sina.com)
CSTR:32186.14.