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Contextual Pooling in Image Classification

  • Zifeng Wu
  • Yongzhen Huang
  • Liang Wang
  • Tieniu Tan
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 7724)

Abstract

The original bag-of-words (BoW) model in terms of image classification treats each local feature independently, and thus ignores the spatial relationships between a feature and its neighboring features, namely, the feature’s context. However, our intuition and empirical studies tell the importance of such spatial information. Although the global spatial information can be captured with the spatial pyramid matching scheme, the subject of capturing local spatial relationships between features is still open. In this paper, we propose a new method to embed such local spatial (context) information into the BoW model. A vector reflecting context information is firstly extracted along with each feature, context patterns are then code-specifically trained, and thus the context information is elegantly embedded into the BoW model by contextual pooling according to different context patterns. Extensive experiments on the PASCAL VOC 2007 dataset show that our method greatly enhances the BoW model, and achieves the state-of-the-art performance.

Keywords

Context Information Context Description Context Vector Spatial Pyramid Match Context Space 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2013

Authors and Affiliations

  • Zifeng Wu
    • 1
  • Yongzhen Huang
    • 1
  • Liang Wang
    • 1
  • Tieniu Tan
    • 1
  1. 1.National Lab of Pattern Recognition Institute of AutomationChinese Academy of SciencesBeijingChina

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