Latent topic based multi-instance learning method for localized content-based image retrieval

  • Authors:
  • Da-Xiang Li;Jiu-Lun Fan;Dian-Wei Wang;Ying Liu

  • Affiliations:
  • -;-;-;-

  • Venue:
  • Computers & Mathematics with Applications
  • Year:
  • 2012

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Abstract

Focusing on the problem of localized content-based image retrieval, based on probabilistic latent semantic analysis (PLSA) and transductive support vector machine (TSVM), a novel semi-supervised multi-instance learning (SSMIL) algorithm is proposed, where a bag corresponds to an image and an instance corresponds to the low-level visual features of a segmented region. In order to convert an MIL problem into a standard supervised learning problem, first, all the instances in training bags be clustered by K-Means method, and regards each cluster center as ''visual-word'' to build a visual vocabulary. Second, according to the distance between ''visual-word'' and instance, a fuzzy membership function is defined to establish a fuzzy term-document matrix, then use PLSA method to obtain bag's (image's) latent topic models, which can convert every bag to a single sample. Finally, in order to use the unlabeled images to improve retrieval accuracy, using semi-supervised TSVM to train classifiers. Experimental results on the COREL data sets show that the proposed method, named PLSA-SSMIL, is robust, and its performance is superior to other key existing MIL algorithms.