title: Extraction of shift invariant wavelet features for classification of images with different sizes.
abstract: An effective shift invariant wavelet feature extraction method for classification of images with different sizes is proposed. The feature extraction process involves a normalization followed by an adaptive shift invariant wavelet packet transform. An energy signature is computed for each subband of these invariant wavelet coefficients. A reduced subset of energy signatures is selected as the feature vector for classification of images with different sizes. Experimental results show that the proposed method can achieve high classification accuracy of 98.5 percent and outperforms the other two image classification methods.
authors.affiliation: Department of Computer and Information Science, Faculty of Science and Technology, University of Macau, Macau, SAR. cmpun@umac.mo
authors.forename: Chi-Man
authors.initials: CM
authors.lastname: Pun
authors.forename: Moon-Chuen
authors.initials: MC
authors.lastname: Lee
mesh_terms: D000465:Algorithms; D001185:Artificial Intelligence; D016000:Cluster Analysis; D007089:Image Enhancement / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D016247:Information Storage and Retrieval / Q000379:methods*; D010363:Pattern Recognition, Automated / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013382:Subtraction Technique