Discriminative Multiple Kernel Learning for Hyperspectral Image Classification
Discriminative Multiple Kernel Learning for Hyperspectral Image Classification
复制标题
高光谱图像分类的判别性多核学习
DOI:
10.1109/tgrs.2016.2530807
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发表时间:
2016-03
影响因子:
8.2
通讯作者:
Tuia Devis
中科院分区:
文献类型:
--
作者:
Wang Qingwang;Gu Yanfeng;Tuia Devis
In this paper, we propose a discriminative multiple kernel learning (DMKL) method for spectral image classification. The core idea of the proposed method is to learn an optimal combined kernel from predefined basic kernels by maximizing separability in reproduction kernel Hilbert space. DMKL achieves the maximum separability via finding an optimal projective direction according to statistical significance, which leads to the minimum within-class scatter and maximum between-class scatter instead of a time-consuming search for the optimal kernel combination. Fisher criterion (FC) and maximum margin criterion (MMC) are used to find the optimal projective direction, thus leading to two variants of the proposed method, DMKL-FC and DMKL-MMC, respectively. After learning the projective direction, all basic kernels are projected to generate a discriminative combined kernel. Three merits are realized by DMKL. First, DMKL can achieve a substantial improvement in classification performance without strict limitation for selection of basic kernels. Second, the discriminating scales of a Gaussian kernel, the useful bands for classification, and the competitive sizes of spatial filters can be selected by ranking the corresponding weights, where the large weights correspond to the most relevant. Third, DMKL reduces the computational burden by requiring fewer support vectors. Experiments are conducted on two hyperspectral data sets and one multispectral data set. The corresponding experimental results demonstrate that the proposed algorithms can achieve the best performance with satisfactory computational efficiency for spectral image classification, compared with several state-of-the-art algorithms.
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DOI:
10.1109/jstars.2015.2423278
发表时间:
2015-06
影响因子:
5.5
作者:
Sen Jia;Xiujun Zhang;Qingquan Li
通讯作者:
Sen Jia;Xiujun Zhang;Qingquan Li
DOI:
10.1109/dicta.2008.42
发表时间:
2008-12
期刊:
2008 Digital Image Computing: Techniques and Applications
影响因子:
--
作者:
Sen Jia;Y. Qian;Z. Ji
通讯作者:
Sen Jia;Y. Qian;Z. Ji
影响因子:
4.1
作者:
Jia, Sen;Xie, Yao;Zhu, Jiasong
通讯作者:
Zhu, Jiasong
影响因子:
4.8
作者:
Kim, Yongmin;Kim, Yongil
通讯作者:
Kim, Yongil
DOI:
10.1080/014311699213622
发表时间:
1997
期刊:
--
影响因子:
--
作者:
Yang Hong;F. Meer;W. Bakker;Z. Tan
通讯作者:
Yang Hong;F. Meer;W. Bakker;Z. Tan