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Author Jose Antonio Rodriguez; Florent Perronnin; Gemma Sanchez; Josep Llados edit  url
doi  openurl
  Title Unsupervised writer adaptation of whole-word HMMs with application to word-spotting Type Journal Article
  Year 2010 Publication Pattern Recognition Letters Abbreviated Journal PRL  
  Volume 31 Issue 8 Pages 742–749  
  Keywords Word-spotting; Handwriting recognition; Writer adaptation; Hidden Markov model; Document analysis  
  Abstract In this paper we propose a novel approach for writer adaptation in a handwritten word-spotting task. The method exploits the fact that the semi-continuous hidden Markov model separates the word model parameters into (i) a codebook of shapes and (ii) a set of word-specific parameters.

Our main contribution is to employ this property to derive writer-specific word models by statistically adapting an initial universal codebook to each document. This process is unsupervised and does not even require the appearance of the keyword(s) in the searched document. Experimental results show an increase in performance when this adaptation technique is applied. To the best of our knowledge, this is the first work dealing with adaptation for word-spotting. The preliminary version of this paper obtained an IBM Best Student Paper Award at the 19th International Conference on Pattern Recognition.		  
  Address  
  Corporate Author Thesis  
  Publisher Elsevier Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes DAG Approved no  
  Call Number (up) DAG @ dag @ RPS2010 Serial 1290  
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Author Jose Antonio Rodriguez; Gemma Sanchez; Josep Llados edit  openurl
  Title Automatic Interpretation of Proofreading Sketches Type Miscellaneous
  Year 2006 Publication 3rd Eurographics Workshop on Sketch Based Interfaces and Modeling (SBIM´06), 35–42 Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract  
  Address Vienna (Austria)  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes DAG Approved no  
  Call Number (up) DAG @ dag @ RSL2006a Serial 716  
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Author Jose Antonio Rodriguez; Gemma Sanchez; Josep Llados edit  openurl
  Title Rejection strategies involving classifier combination for handwriting recognition Type Book Chapter
  Year 2007 Publication 3rd Iberian Conference on Pattern Recognition and Image Analysis (IbPRIA 2007), J. Marti et al. (Eds.) LNCS 4478:97–104 Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract  
  Address Girona (Spain)  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes DAG Approved no  
  Call Number (up) DAG @ dag @ RSL2007a Serial 777  
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Author Jose Antonio Rodriguez; Gemma Sanchez; Josep Llados edit  openurl
  Title A Pen-based Interface for Real-time Document Edition Type Conference Article
  Year 2007 Publication 9th International Conference on Document Analysis and Recognition. Abbreviated Journal  
  Volume 2 Issue Pages 939–944  
  Keywords  
  Abstract  
  Address Curitiba (Brazil)  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference ICDAR  
  Notes DAG Approved no  
  Call Number (up) DAG @ dag @ RSL2007b Serial 883  
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Author Jose Antonio Rodriguez; Gemma Sanchez; Josep Llados edit  openurl
  Title Categorization of Digital Ink Elements using Spectral Features Type Conference Article
  Year 2007 Publication Seventh IAPR International Workshop on Graphics Recognition Abbreviated Journal  
  Volume Issue Pages 63–64  
  Keywords  
  Abstract  
  Address Curitiba (Brazil)  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference GREC  
  Notes DAG Approved no  
  Call Number (up) DAG @ dag @ RSL2007c Serial 888  
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Author Jose Antonio Rodriguez; Gemma Sanchez; Josep Llados edit  openurl
  Title Categorization of Digital Ink Elements using Spectral Features Type Book Chapter
  Year 2008 Publication Graphics Recognition: Recent Advances and New Opportunities Abbreviated Journal  
  Volume 5046 Issue Pages 188–198  
  Keywords  
  Abstract  
  Address  
  Corporate Author Thesis  
  Publisher Springer–Verlag Place of Publication Editor W. Liu, J. Llados, J.M. Ogier  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title LNCS  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes DAG Approved no  
  Call Number (up) DAG @ dag @ RSL2008 Serial 1099  
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Author Oriol Ramos Terrades; Salvatore Tabbone; Ernest Valveny edit  openurl
  Title Combination of shape descriptors using an adaptation of boosting Type Miscellaneous
  Year 2006 Publication 18th International Conference on Pattern Recognition (ICPR´06), 2: 764–767 Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract  
  Address Hong Kong  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes DAG Approved no  
  Call Number (up) DAG @ dag @ RTV2006 Serial 718  
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Author Oriol Ramos Terrades; Salvatore Tabbone; Ernest Valveny edit  openurl
  Title Optimal Linear Combination for Two-class Classifiers Type Conference Article
  Year 2007 Publication Proceedings of the International Conference on Advances in Pattern Recognition Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract  
  Address Kolkata (India)  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference ICAPR  
  Notes DAG Approved no  
  Call Number (up) DAG @ dag @ RTV2007a Serial 894  
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Author Oriol Ramos Terrades; Salvatore Tabbone; Ernest Valveny edit  openurl
  Title A Review of Shape Descriptors for Document Analysis Type Conference Article
  Year 2007 Publication 9th International Conference on Document Analysis and Recognition Abbreviated Journal  
  Volume 1 Issue Pages 227–231  
  Keywords  
  Abstract  
  Address Curitiba (Brazil)  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference ICDAR  
  Notes DAG Approved no  
  Call Number (up) DAG @ dag @ RTV2007b Serial 884  
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Author Oriol Ramos Terrades; Salvatore Tabbone; L. Wendling; Ernest Valveny edit  openurl
  Title Symbol Recognition based on a Multiresolution Analysis of the Radon Transform Type Miscellaneous
  Year 2004 Publication The International Workshop on Multidisciplinary Image, Video, and Audio Retrieval and Mining Abbreviated Journal  
  Volume Issue Pages  
  Keywords  
  Abstract  
  Address Sherbrooke (Canada)  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes DAG Approved no  
  Call Number (up) DAG @ dag @ RTW2004 Serial 500  
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