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Indexed by:期刊论文

Date of Publication:2018-07-01

Journal:MULTIMEDIA TOOLS AND APPLICATIONS

Included Journals:SCIE、Scopus

Volume:77

Issue:13

Page Number:17023-17041

ISSN No.:1380-7501

Key Words:Image classification; Dictionary learning; Analysis dictionary learning; Synthesis K-SVD

Abstract:In the fields of computer vision and pattern recognition, dictionary learning techniques have been widely applied. In classification tasks, synthesis dictionary learning is usually time-consuming during the classification stage because of the sparse reconstruction procedure. Analysis dictionary learning, which is another research line, is more favorable due to its flexible representative ability and low classification complexity. In this paper, we propose a novel discriminative analysis dictionary learning method to enhance classification performance. Particularly, we incorporate a linear classifier and the supervised information into the traditional analysis dictionary learning framework by adding a discrimination error term. A synthesis K-SVD based algorithm which can effectively constrain the sparsity is presented to solve the proposed model. Extensive comparison experiments on benchmark databases validate the satisfactory performance of our method.