1Henan Univ. (China)
2Nanyang Institute of Technology (China)
*Address all correspondence to Haishun Du, jddhs@vip.henu.edu.cn
ARTICLE - 1 Introduction
- 2 Related Works
- 2.1 Discriminative SDL
- 2.2 Discriminative ADL
- 2.3 Discriminative ASDPL
- 3 Joint Structured Constraint Discriminant Analysis Dictionary Learning
- 3.1 Adaptive Local Structure Preserving Term
- 3.2 Discriminative Sparse Code Error Term
- 3.3 Analysis Dictionary Combination Term
- 3.4 JSCDADL Model
- 4 Optimization of JSCDADL
- 4.1 Updating Ω1
- 4.2 Updating Ω2
- 4.3 Updating A
- 4.4 Updating X
- 4.5 Algorithm of JSCDADL
- 4.6 Computational Complexity Analysis
- 5 Classification Based on JSCDADL
- 6 Experiments
- 6.1 Experimental Setting
- 6.2 Results on the Extended Yale B Dataset
- 6.3 Results on the CMU PIE Dataset
- 6.4 Results on the AR Dataset
- 6.5 Results on the CLD 22 Dataset
- 6.6 Results on the Caltech 101 Dataset
- 6.7 Results on the Scene 15 Dataset
- 6.8 Comparison with Deep-learning-based Methods
- 6.9 Running Time Comparison
- 6.10 Parameter Sensitivity Analysis
- 6.11 Experimental Results with Different Numbers of Dictionary Atoms
- 6.12 Ablation Study
- 6.13 Result Analysis
- 7 Conclusions
FIGURES & TABLES REFERENCES CITED BY
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. |
Proceedings of SPIE (May 22 2023)
Proceedings of SPIE (June 27 2023)
Proceedings of SPIE (October 09 2023)
Proceedings of SPIE (September 04 2009)