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纸质出版日期： 2019-9 ，
录用日期： 2018-5-16
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赵亮, 王立国, 刘丹凤. 2019. 高光谱图像子空间的波段选择. 遥感学报, 23(5): 904–910
Zhao L, Wang L G and Liu D F. 2019. A subspace band selection method for hyperspectral imagery. Journal of Remote Sensing, 23(5): 904–910
为降低高光谱遥感数据光谱空间的冗余度，提出一种快速的波段选择方法。该方法在波段子空间下进行，依次选择各子空间中方差最大的波段作为初始波段，设定目标函数，然后逐子空间替换波段使得目标性能更加优化，直至没有替换可以使得目标更优为止。在两个公开高光谱影像数据集上对比3种常用波段选择方法(ABC、AP、ABS)来验证提出方法的有效性，实验结果表明：(1)在印第安纳数据上，本文方法与ABC、AP、ABS所选波段子集相比平均相关性分别降低22.04%、52.61%、55.71%，最佳指数分别提高0.58%、51.73%、0.95%，总体分类精度分别提高0.16%、1.39%、23.07%，在搜索效率上与同类型的ABC方法相比提高6.61%—69.02%；(2)在帕维亚大学数据上，本文方法与ABC、AP、ABS所选波段子集相比平均相关性分别降低2.38%、0.51%、32.83%，最佳指数分别提高1.34%、17.97%、12.92%，总体分类精度分别提高0.31%、0.69%、8.53%，在搜索效率上与同类型的ABC方法相比提高19.13%—86.34%。本文提出的波段选择方法能够选择合适的波段子集满足不同的应用需要，是一种有效的波段选择方法。
Hyperspectral remote sensing data have a wealth of spectral information that can describe objects in detail. However
redundancy occurs due to the high correlation of adjacent bands in the narrow-band continuous spectrum space. This redundancy leads to high computational complexity and dimension disaster in data analysis. As an important means of dimension reduction
band selection can reduce these negative effects. The goal of band selection is to retain the relevant information needed in practical applications with as few bands as possible. Therefore
two aspects of discussion are involved: selection criteria and selection methods (search methods). A new band search method based on band subspace is proposed to improve band searching efficiency. This method needs to input the required number of bands without any other parameter settings. First
the spectral space of hyperspectral data is partitioned according to the block characteristics of band correlation coefficient matrix image and the adjacent transitive correlation
which is partitioned as a first subspace. Then
on the basis of the actual demand band number
the first subspace is divided secondary according to the proportion of the subspace size
and the final band subspace is obtained. Second
a band is selected according to certain rules (e.g.
the maximum standard deviation) in each final band subspace to form an initial band subset. Lastly
after the objective function (e.g.
the average correlation of the band subsets
the best index
the overall classification accuracy) is set
bands are replaced by each subspace to increase (or decrease) the value of objective function until no replacement can improve the goal further
which is the final band subset we pursued. The other three band selection methods are compared with our method on two opened hyperspectral data to verify the validity of the proposed method. Experimental results show that as a fast search strategy
the computational time of the proposed method is much less than the exhaustive band combination. The proposed method has faster search efficiency and convergence than the artificial bee colony algorithm for all kinds of objective functions. Moreover
compared with band selection method based on spectral clustering and adaptive band selection
this method can flexibly transform the target function for specific applications and obtain more suitable band subsets for different requirements. The correlation of spectral space of hyperspectral data is flexibly used in this study. It substantially reduces the computational complexity of the search algorithm in the band selection that combined the subspace partition with band search. Moreover
few parameters are used to simplify the complexity of the model and reduce the time spent in parameter tuning. For different application requirements
the proposed method flexibly transforms the objective function so that the searched bands’ combination becomes suitable for these requirements.
遥感高光谱波段选择子空间划分准则函数分类，搜索策略
remote sensinghyperspectral imagesband selectionsubspace partitioncriterion functionclassification search strategy
Agarwal A, El-Ghazawi T, El-Askary H and Le-Moigne J. 2007. Efficient hierarchical-PCA dimension reduction for hyperspectral image//Proceedings of 2007 IEEE International Symposium on Signal Processing and Information Technology. Giza, Egypt: IEEE: 353-356
Chang C I and Wang S. 2006. Constrained band selection for hyperspectral imagery. IEEE Transactions on Geoscience and Remote Sensing, 44(6): 1575–1585
Chavez P S, Berlin G L and Sowers L B. 1982. Statistical method for selecting Landsat MSS ratios. Journal of Applied Photographic Engineering, 8(1): 23–30
谷延锋, 张晔. 2003. 基于自动子空间划分的高光谱数据特征提取. 遥感技术与应用, 18(6): 384–387
Gu Y F and Zhang Y. 2003. Feature extraction based on automatic subspace partition for hyperspectral images. Remote Sensing Technology and Application, 18(6): 384–387
Li W, Prasad S, Fowler J E and Bruce L M. 2012. Locality-preserving dimensionality reduction and classification for hyperspectral image analysis. IEEE Transactions on Geoscience and Remote Sensing, 50(4): 1185–1198
Pal M and Foody G M. 2010. Feature selection for classification of hyperspectral data by SVM. IEEE Transactions on Geoscience and Remote Sensing, 48(5): 2297–2307
Pudil P, Novovičová J and Kittler J. 1994. Floating search methods in feature selection. Pattern Recognition Letters, 15(11): 1119–1125
Serpico S B and Bruzzone L. 2001. A new search algorithm for feature selection in hyperspectral remote sensing image. IEEE Transactions on Geoscience and Remote Sensing, 39(7): 1360–1367
Sun K, Geng X R and Ji L Y. 2015. Exemplar component analysis: a fast band selection method for hyperspectral imagery. IEEE Geoscience and Remote Sensing Letters, 12(5): 998–1002
童庆禧, 张兵, 郑兰芬. 2006. 高光谱遥感——原理、技术与应用. 北京: 高等教育出版社
Tong Q X, Zhang B and Zheng L F. 2006. Hyperspectral Remote Sensing. Beijing: Higher Education Press
Wang J and Chang C I. 2006. Independent component analysis-based dimensionality reduction with applications in hyperspectral image analysis. IEEE Transactions on Geoscience and Remote Sensing, 44(6): 1586–1600
王立国, 魏芳洁. 2013. 结合APO算法的高光谱图像波段选择. 哈尔滨工业大学学报, 45(9): 100–106
Wang L G and Wei F J. 2013. Artificial physics optimization algorithm combined band selection for hyperspectral imagery. Journal of Harbin Institute of Technology, 45(9): 100–106
王立国, 赵亮, 刘丹凤. 2015. 基于人工蜂群算法高光谱图像波段选择. 哈尔滨工业大学学报, 47(11): 82–88
Wang L G, Zhao L and Liu D F. 2015. Artificial bee colony algorithm-based band selection for hyperspectral imagery. Journal of Harbin Institute of Technology, 47(11): 82–88
赵冬, 赵光恒. 2009. 基于改进遗传算法的高光谱图像波段选择. 中国科学院研究生院学报, 26(6): 795–802
Zhao D and Zhao G H. 2009. Band selection of hyperspectral image based on improved genetic algorithm. Journal of the Graduate School of the Chinese Academy of Sciences, 26(6): 795–802
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