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Weakly Supervised Object Localization with Latent Category Learning

  • Chong Wang
  • Weiqiang Ren
  • Kaiqi Huang
  • Tieniu Tan
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8694)

Abstract

Localizing objects in cluttered backgrounds is a challenging task in weakly supervised localization. Due to large object variations in cluttered images, objects have large ambiguity with backgrounds. However, backgrounds contain useful latent information, e.g., the sky for aeroplanes. If we can learn this latent information, object-background ambiguity can be reduced to suppress the background. In this paper, we propose the latent category learning (LCL), which is an unsupervised learning problem given only image-level class labels. Firstly, inspired by the latent semantic discovery, we use the typical probabilistic Latent Semantic Analysis (pLSA) to learn the latent categories, which can represent objects, object parts or backgrounds. Secondly, to determine which category contains the target object, we propose a category selection method evaluating each category’s discrimination. We evaluate the method on the PASCAL VOC 2007 database and ILSVRC 2013 detection challenge. On VOC 2007, the proposed method yields the annotation accuracy of 48%, which outperforms previous results by 10%. More importantly, we achieve the detection average precision of 30.9%, which improves previous results by 8% and can be competitive with the supervised deformable part model (DPM) 5.0 baseline 33.7%. On ILSVRC 2013 detection, the method yields the precision of 6.0%, which is also competitive with the DPM 5.0.

Keywords

weakly supervised learning object localization category learning latent semantic analysis 

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • Chong Wang
    • 1
  • Weiqiang Ren
    • 1
  • Kaiqi Huang
    • 1
  • Tieniu Tan
    • 1
  1. 1.National Laboratory of Pattern RecognitionInstitute of Automation, Chinese Academy of SciencesChina

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