Combining local and global: Rich and robust feature pooling for visual recognition
- Publication Type:
- Journal Article
- Citation:
- Pattern Recognition, 2017, 62 pp. 225 - 235
- Issue Date:
- 2017-02-01
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| 1-s2.0-S0031320316302199-main.pdf | Published Version | 1.18 MB |
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© 2016 Elsevier Ltd The human visual system proves expert in discovering patterns in both global and local feature space. Can we design a similar way for unsupervised feature learning? In this paper, we propose a novel spatial pooling method within an unsupervised feature learning framework, named Rich and Robust Feature Pooling (R2FP), to better extract rich and robust representation from sparse feature maps learned from the raw data. Both local and global pooling strategies are further considered to instantiate such a method. The former selects the most representative features in the sub-region and summarizes the joint distribution of the selected features, while the latter is utilized to extract multiple resolutions of features and fuse the features with a feature balance kernel for rich representation. Extensive experiments on several image recognition tasks demonstrate the superiority of the proposed method.
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