Low-rank decomposition and Laplacian group sparse coding for image classification
Low-rank decomposition and Laplacian group sparse coding for image classification
复制标题
用于图像分类的低秩分解和拉普拉斯群稀疏编码
DOI:
10.1016/j.neucom.2013.12.032
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发表时间:
2014-07
期刊:
影响因子:
6
通讯作者:
Ma Chen
中科院分区:
文献类型:
--
作者:
Zhang Lihe;Ma Chen
This paper presents a novel image classification framework (referred to as LR-LGSC) by leveraging the low-rank matrix decomposition and Laplacian group sparse coding. First, motivated by the observation that local features (such as SIFT) extracted from neighboring patches in an image usually contain correlated (or common) items and specific (or noisy) items, we construct a structured dictionary based on the low-rank and sparse components of local features. This dictionary has more powerful representation capability. Then, we investigate group generation for group sparse coding and introduce a Laplacian constraint to take into account the interrelation among groups, which can maintain low reconstruction errors while prompting similar samples to have similar codes. Finally, linear SVM classifier is used for the classification. The proposed method is tested on Caltech-101, UIUC-sports and Scene 15 dataset, and achieves competitive or better results than the state-of-the-art methods.
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影响因子:
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