Automatic Fruit and Vegetable Recognition Based on CENTRIST and Color Representation
Automatic fruit and vegetable recognition from images is still a very challenging task. In this work, we describe and analyze an efficient and accurate fruit and vegetable recognition system based on fusing two visual descriptors: Census Transform Histogram (CENTRIST) and Hue-Saturation (HS) Histogram representation. Initially, background subtraction is applied to the fruit and vegetable images. CENTRIST and HS-Histogram are extracted, as well as Color CENTRIST features for comparison purpose. Then, the feature vector is reduced through Principal Component Analysis (PCA) and Linear Discriminant Analysis (LDA). In the recognition process, K-nearest neighbor (K-NN) and Support Vector Machine (SVM) classifiers are employed. Experiments conducted on a benchmark demonstrate that combining CENTRIST and HS-Histogram representation reached high and competitive recognition accuracy rates compared to other similar works in the literature.
KeywordsFruit and vegetable recognition CENTRIST Color features
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