Journal
MULTIMEDIA TOOLS AND APPLICATIONS
Volume 77, Issue 13, Pages 17023-17041Publisher
SPRINGER
DOI: 10.1007/s11042-017-5269-6
Keywords
Image classification; Dictionary learning; Analysis dictionary learning; Synthesis K-SVD
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Funding
- National Natural Science Foundation of China [61402079]
- Foundation for Innovative Research Groups of the NSFC [71421001]
- Open Project Program of the National Laboratory of Pattern Recognition (NLPR) [201600022]
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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.
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