A study on image representation by hierarchical probabilistic models and its applications

2010 Fiscal Year Final Research Report

• Project/Area Number: 20500129
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Intelligent informatics
• Research Institution: Shinshu University
• Principal Investigator: MARUYAMA Minoru Shinshu University, 工学部, 准教授 (80283232)
• Project Period (FY): 2008 – 2010
• Keywords: 画像認識 / 確率的トピックモデル / パターン識別 / 識別関数 / pLSA

Research Abstract

We have mainly studied about hierarchical probabilistic model for image representation ant its application to category recognition. In our method, we used probabilistic topic model. We proposed a method for classifying regions in a document image based on pLSA (probabilistic latent semantic analysis). Classification is carried out based on topic proportion of the region that is estimated via MAP-based EM algorithm. The model is further extended to classify smaller image regions. We also presented the method to detect characters in a natural scene images by using decision stumps. A part of this research work received best paper award honorable mention at the IAPR workshop on Document Analysis Systems 2008.

Research Products

• [Journal Article] 確率的トピックモデルによる文書画像の領域分割 (2009)
  • Author(s): 山口拓真, 丸山稔
  • Journal Title: 電子情報通信学会論文誌D Vol.J92-D, No.6 Pages: 876-887
  • URL: http://hdl.handle.net/10091/12047
  • Peer Reviewed
• [Presentation] 単語出現頻度と画像特徴に基づく確率的トピックモデルの論文検索への応用 (2010)
  • Author(s): 殿岡大輔, 丸山稔
  • Organizer: 電子情報通信学会信越支部大会論文集,8C-4,pp.136
  • Year and Date: 20100000
• [Presentation] 単語出現頻度に基づく論文集合の分類 (2009)
  • Author(s): 殿岡大輔, 丸山稔
  • Organizer: 電子情報通信学会信越支部大会論文集、8A-2,pp.137
  • Year and Date: 20090000
• [Presentation] Extraction of characters on signboards in natural scene images by stump classifiers (2009)
  • Author(s): M.Maruyama, T.Yamaguchi
  • Organizer: Proc.10th International Conference on Document Analysis and Recognition (ICDAR2009), pp.1365-1369
  • URL: http://hdl.handle.net/10091/12016
  • Year and Date: 20090000
• [Presentation] Feature extraction for document image segmentation by pLSA model (2008)
  • Author(s): T.Yamaguchi, M.Maruyama
  • Organizer: Proc.8th IAPR International Workshop on Document Analysis Systems (DAS2008), pp.53-60
  • URL: http://hdl.handle.net/10091/12236
  • Year and Date: 20080000
• [Presentation] Image categorization by a classifier based on probabilistic topic model (2008)
  • Author(s): T.Yamaguchi, M.Maruyama
  • Organizer: Proc.19th International Conference on Pattern Recognition (ICPR2008), pp.1-4
  • URL: http://hdl.handle.net/10091/12019
  • Year and Date: 20080000