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Home> Journals> J. Electron. Imag.> Volume 32> Issue 1>Article
15 February 2023Joint structured constraint discriminant analysis dictionary learning for pattern classification
Haishun Du,Yanfang Ye,Yonghao Zhang,Linbing He
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Haishun Du,1,* Yanfang Ye,1 Yonghao Zhang,1,2 Linbing He1

1Henan Univ. (China)
2Nanyang Institute of Technology (China)

*Address all correspondence to Haishun Du, jddhs@vip.henu.edu.cn
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Abstract

Analysis dictionary learning (DL) has been successfully applied to the field of pattern classification. However, it is still a challenge to utilize the local structure information and the class information of samples to improve the discrimination capability of analysis dictionary. We proposed a joint structured constraint discriminant analysis DL (ADL) method (JSCDADL) to learn a structured discriminant analysis dictionary by combining the local structure information and the structured information of samples. Specifically, we first designed an adaptive local structure preserving term (ALSPT) to improve the discrimination capability of analysis dictionary. It adaptively transmits the local structure information of samples to analysis dictionary, which ensures that the same class of samples has similar sparse codes under the action of the analysis dictionary. Then, we designed a discriminative sparse coding error term that forces the coding coefficient matrix to have the desired block diagonal structure. To further enhance the discrimination capability of analysis dictionary, we designed an analysis dictionary combination term by constantly approximating the two analysis dictionaries learned to obtain an analysis dictionary with the local structure information and the structured information of samples. Moreover, we designed an effective iterative algorithm to solve the optimization problem of JSCDADL. Extensive experimental results on six datasets demonstrate that JSCDADL can achieve satisfactory classification performance compared with some state-of-the-art methods.

© 2023 SPIE and IS&T
Haishun Du,Yanfang Ye,Yonghao Zhang, andLinbing He"Joint structured constraint discriminant analysis dictionary learning for pattern classification," Journal of Electronic Imaging 32(1), 013033 (15 February 2023).https://doi.org/10.1117/1.JEI.32.1.013033
Received: 13 July 2022; Accepted: 31 January 2023; Published: 15 February 2023
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KEYWORDS
Associative arrays

Statistical analysis

Image classification

Matrices

Education and training

Error analysis

Chemical species

Mathematical optimization

Scene classification

Machine learning

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Haishun Du, Yanfang Ye, Yonghao Zhang, Linbing He, "Joint structured constraint discriminant analysis dictionary learning for pattern classification," J. Electron. Imag. 32(1) 013033 (15 February 2023) https://doi.org/10.1117/1.JEI.32.1.013033
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