Title
Classification of fruits using computer vision and a multiclass support vector machine.
Abstract
Automatic classification of fruits via computer vision is still a complicated task due to the various properties of numerous types of fruits. We propose a novel classification method based on a multi-class kernel support vector machine (kSVM) with the desirable goal of accurate and fast classification of fruits. First, fruit images were acquired by a digital camera, and then the background of each image was removed by a split-and-merge algorithm; Second, the color histogram, texture and shape features of each fruit image were extracted to compose a feature space; Third, principal component analysis (PCA) was used to reduce the dimensions of feature space; Finally, three kinds of multi-class SVMs were constructed, i.e., Winner-Takes-All SVM, Max-Wins-Voting SVM, and Directed Acyclic Graph SVM. Meanwhile, three kinds of kernels were chosen, i.e., linear kernel, Homogeneous Polynomial kernel, and Gaussian Radial Basis kernel; finally, the SVMs were trained using 5-fold stratified cross validation with the reduced feature vectors as input. The experimental results demonstrated that the Max-Wins-Voting SVM with Gaussian Radial Basis kernel achieves the best classification accuracy of 88.2%. For computation time, the Directed Acyclic Graph SVMs performs swiftest.
Year
DOI
Venue
2012
10.3390/s120912489
SENSORS
Keywords
Field
DocType
fruit classification,principal component analysis,color histogram,Unser's texture analysis,mathematical morphology,shape feature,multi-class SVM,kernel SVM,stratified cross validation
Computer vision,Feature vector,Pattern recognition,Least squares support vector machine,Radial basis function kernel,Kernel embedding of distributions,Support vector machine,Kernel principal component analysis,Polynomial kernel,Artificial intelligence,Engineering,Kernel method
Journal
Volume
Issue
ISSN
12
9.0
1424-8220
Citations 
PageRank 
References 
36
1.56
13
Authors
2
Name
Order
Citations
PageRank
yudong zhang1133490.44
Lenan Wu270062.18