2011 international conference on document analysis and...
TRANSCRIPT
IEEE Catalog Number: ISBN:
CFP11227-PRT 978-1-4577-1350-7
2011 International Conference on Document Analysis and Recognition (ICDAR 2011)
Beijing, China 18 – 21 September 2011
Pages 1-758
1/2
11 International Conferenceon Document Analysis
and Recognition
ICDAR 2011Table of Contents
Welcome from the General Chairs........................................................................................................xxvii
Welcome from the Program Chairs......................................................................................................xxviii
Conference Committees.........................................................................................................................xxix
Reviewers................................................................................................................................................xxxii
Sponsors.................................................................................................................................................xxxv
Document Image ProcessingA Tool for Tuning Binarization Techniques ...................................................................................................1
Vavilis Sokratis and Ergina Kavallieratou
A Laplacian Energy for Document Binarization ............................................................................................6Nicholas R. Howe
An MRF Model for Binarization of Natural Scene Text ...............................................................................11Anand Mishra, Karteek Alahari, and C.V. Jawahar
Stroke-Like Pattern Noise Removal in Binary Document Images ..............................................................17Mudit Agrawal and David Doermann
Combination of Document Image Binarization Techniques ........................................................................22Bolan Su, Shijian Lu, and Chew Lim Tan
Determining Document Skew Using Inter-line Spaces ...............................................................................27Boris Epshtein
Datasets and Performance EvaluationWhen is a Problem Solved? .......................................................................................................................32
Daniel Lopresti and George Nagy
CASIA Online and Offline Chinese Handwriting Databases .......................................................................37Cheng-Lin Liu, Fei Yin, Da-Han Wang, and Qiu-Feng Wang
th
v
An Open Architecture for End-to-End Document Analysis Benchmarking .................................................42Bart Lamiroy and Daniel Lopresti
Aletheia - An Advanced Document Layout and Text Ground-Truthing Systemfor Production Environments ......................................................................................................................48
C. Clausner, S. Pletschacher, and A. Antonacopoulos
HMM-Based Alignment of Inaccurate Transcriptions for Historical Documents .........................................53Andreas Fischer, Emanuel Indermühle, Volkmar Frinken, and Horst Bunke
Transcript Mapping for Handwritten Text Lines Using Conditional RandomFields ..........................................................................................................................................................58
Xiang-Dong Zhou, Fei Yin, Da-Han Wang, Qiu-Feng Wang, Masaki Nakagawa,and Cheng-Lin Liu
Document Retrieval (1)Browsing Heterogeneous Document Collections by a Segmentation-FreeWord Spotting Method ................................................................................................................................63
Marçal Rusiñol, David Aldavert, Ricardo Toledo, and Josep Lladós
Fast Key-Word Searching via Embedding and Active-DTW .......................................................................68Raid Saabni and Alex Bronstein
Keyword Spotting in Online Handwritten Documents Containing Textand Non-text Using BLSTM Neural Networks ............................................................................................73
Emanuel Indermühle, Volkmar Frinken, Andreas Fischer, and Horst Bunke
Keyword Spotting in Offline Chinese Handwritten Documents Usinga Statistical Model .......................................................................................................................................78
Liang Huang, Fei Yin, Qing-Hu Chen, and Cheng-Lin Liu
BLSTM Neural Network Based Word Retrieval for Hindi Documents ........................................................83Raman Jain, Volkmar Frinken, C.V. Jawahar, and R. Manmatha
A Method for Removing Inflectional Suffixes in Word Spotting of MongolianKanjur ..........................................................................................................................................................88
Hongxi Wei, Guanglai Gao, and Yulai Bao
Poster Session 1A Handwritten Character Extraction Algorithm for Multi-language DocumentImage ..........................................................................................................................................................93
Yonghong Song, Guilin Xiao, Yuanlin Zhang, Lei Yang, and Liuliu Zhao
Retrieval of Envelope Images Using Graph Matching ................................................................................99Li Liu, Yue Lu, and Ching Y. Suen
Automatic Estimation of the Legibility of Binarised Historic Documentsfor Unsupervised Parameter Tuning .........................................................................................................104
M. Stommel and G. Frieder
vi
Segmentation of Handwritten Textlines in Presence of Touching Components .......................................109Jayant Kumar, Le Kang, David Doermann, and Wael Abd-Almageed
Ternary Entropy-Based Binarization of Degraded Document Images UsingMorphological Operators ..........................................................................................................................114
T. Hoang Ngan Le, Tien D. Bui, and Ching Y. Suen
Large Scale Page-Based Book Similarity Clustering ................................................................................119Nemanja Spasojević and Guillaume Poncin
A New Gradient Based Character Segmentation Method for Video TextRecognition ...............................................................................................................................................126
Palaiahnakote Shivakumara, Souvik Bhowmick, Bolan Su, Chew Lim Tan,and Umapada Pal
Video Character Recognition through Hierarchical Classification ............................................................131Palaiahnakote Shivakumara, Trung Quy Phan, Shijian Lu, and Chew Lim Tan
Robust Vanishing Point Detection for MobileCam-Based Documents .....................................................136Xu-Cheng Yin, Hong-Wei Hao, Jun Sun, and Satoshi Naoi
A Benchmark Kannada Handwritten Document Dataset and Its Segmentation .......................................141Alireza Alaei, P. Nagabhushan, and Umapada Pal
A Digital Ink Recogntion Server for Handwritten Japanese Text ..............................................................146Daqing Wang, Bilan Zhu, and Masaki Nakagawa
A Novel Method for Embedded Text Segmentation Based on Stroke and Color .....................................151Xiufei Wang, Lei Huang, and Changping Liu
Using Ontologies to Reduce the Semantic Gap between Historians and ImageProcessing Algorithms ..............................................................................................................................156
Mickal Coustaty, Alain Bouju, Karell Bertet, and Georges Louis
Probabilistic Mathematical Formula Recognition Using a 2D Context-FreeGraph Grammar ........................................................................................................................................161
Mehmet Celik and Berrin Yanikoglu
Chromatic / Achromatic Separation in Noisy Document Images ..............................................................167Asma Ouji, Yann Leydier, and Frank Lebourgeois
Novel Data Representation for Text Extraction from Multispectral HistoricalDocument Images .....................................................................................................................................172
Rachid Hedjam and Mohamed Cheriet
Text Detection in Natural Scene Images by Stroke Gabor Words ...........................................................177Chucai Yi and Yingli Tian
A Shape Descriptor Combining Logarithmic-Scale Histogram of RadonTransform and Phase-Only Correlation Function .....................................................................................182
Makoto Hasegawa and Salvatore Tabbone
Segmentation of Graphical Objects as Maximally Stable Salient Regions ...............................................187Su Yang and Yuanyuan Wang
vii
An Optimized Multi-stream Decoding Algorithm for Handwritten WordRecognition ...............................................................................................................................................192
Yousri Kessentini, Thierry Paquet, and Ahmed Guermazi
Indexing On-line Handwritten Texts Using Word Confusion Networks ....................................................197Sebastián Peña Saldarriaga and Mohamed Cheriet
Circle Text Expansion as Low-Rank Textures ..........................................................................................202Xin Zhang and Fuchun Sun
MRG-OHTC Database for Online Handwritten Tibetan Character Recognition .......................................207Long-long Ma, Hui-dan Liu, and Jian Wu
Using Readers' Highlighting on Monochromatic Documents for Automatic TextTranscription and Summarization .............................................................................................................212
Ricardo da Silva Barboza, Rafael Dueire Lins, and Victor Matheus de S. Pereira
Color-Mixing Correction of Overlapped Colors in Scanner Images ..........................................................217Misako Suwa
Enhanced Active Contour Method for Locating Text ................................................................................222Yaakov Navon, Vladimir Kluzner, and Boaz Ophir
Updating Knowledge in Feedback-Based Multi-classifier Systems ..........................................................227D. Impedovo and G. Pirlo
A New Feature Optimization Method Based on Two-Directional 2DLDAfor Handwritten Chinese Character Recognition ......................................................................................232
Xue Gao, Wenhuan Wen, and Lianwen Jin
Development of Template-Free Form Recognition System .....................................................................237Junichi Hirayama, Hiroshi Shinjo, Toshikazu Takahashi, and Takeshi Nagasaki
Data Extraction from Web Tables: The Devil is in the Details ..................................................................242George Nagy, Sharad Seth, Dongpu Jin, David W. Embley, Spencer Machado,and Mukkai Krishnamoorthy
A Method of Evaluating Table Segmentation Results Based on a Table ImageGround Truther .........................................................................................................................................247
Yanhui Liang, Yizhou Wang, and Eric Saund
The SCRIBO Module of the Olena Platform: A Free Software Frameworkfor Document Image Analysis ...................................................................................................................252
Guillaume Lazzara, Roland Levillain, Thierry Géraud, Yann Jacquelet,Julien Marquegnies, and Arthur Crépin-Leblond
A Semi-supervised Ensemble Learning Approach for Character Labelingwith Minimal Human Effort ........................................................................................................................259
Szilárd Vajda, Akmal Junaidi, and Gernot A. Fink
Character Recognition Based on DTW-Radon .........................................................................................264K.C. Santosh
viii
A Mixed Approach for Handwritten Documents Structural Analysis .........................................................269Vincent Malleron and Véronique Eglin
Binarization of Color Character Strings in Scene Images Using K-MeansClustering and Support Vector Machines .................................................................................................274
Toru Wakahara and Kohei Kita
Efficient Cut-Off Threshold Estimation for Word Spotting Applications ....................................................279A. L. Kesidis and B. Gatos
Improvement of On-line Recognition Systems Using a RBF-Neural NetworkBased Writer Adaptation Module ..............................................................................................................284
Lobna Haddad, Tarek M. Hamdani, Monji Kherallah, and Adel M. Alimi
Distortion Measurement for Automatic Document Verification .................................................................289Joost van Beusekom and Faisal Shafait
Composite Script Identification and Orientation Detection for Indian TextImages ......................................................................................................................................................294
Shamita Ghosh and Bidyut B. Chaudhuri
A Painting Based Technique for Skew Estimation of Scanned Documents .............................................299Alireza Alaei, Umapada Pal, P. Nagabhushan, and Fumitaka Kimura
Database Development and Recognition of Handwritten Devanagari LegalAmount Words ..........................................................................................................................................304
R. Jayadevan, S. R. Kolhe, P. M. Patil, and Umapada Pal
Sample-Dependent Feature Selection for Faster Document ImageCategorization ...........................................................................................................................................309
Jérôme Louradour and Christopher Kermorvant
Co-training for Handwritten Word Recognition .........................................................................................314Volkmar Frinken, Andreas Fischer, Horst Bunke, and Alicia Fóornes
Web Multimedia Object Clustering via Information Fusion .......................................................................319Wenting Lu, Lei Li, Tao Li, Honggang Zhang, and Jun Guo
A New Text-Line Alignment Approach Based on Piece-Wise PaintingAlgorithm for Handwritten Documents ......................................................................................................324
Alireza Alaei, P. Nagabhushan, and Umapada Pal
Baseline Dependent Percentile Features for Offline Arabic HandwritingRecognition ...............................................................................................................................................329
Pradeep Natarajan, David Belanger, Rohit Prasad, Matin Kamali,Krishna Subramanian, and Prem Natarajan
Stroke-Based Performance Metrics for Handwritten Mathematical Expressions .....................................334Richard Zanibbi, Amit Pillay, Harold Mouchère, Christian Viard-Gaudin,and Dorothea Blostein
ix
An Application of the 2D Gaussian Filter for Enhancing Feature Extractionin Off-line Signature Verification ...............................................................................................................339
Vu Nguyen and Michael Blumenstein
alpha-Shape Based Classification with Applications to Optical CharacterRecognition ...............................................................................................................................................344
Eli Packer, Asaf Tzadok, and Vladimir Kluzner
Bags of Strokes Based Approach for Classification and Indexing of Drop Caps .....................................349Thi Thuong Huyen Nguyen, Mickaël Coustaty, and Jean-Marc Ogier
Robust Cell Extraction Method for Form Documents Based on IntersectionSearching and Global Optimization ..........................................................................................................354
Hiroshi Tanaka, Hiroaki Takebe, and Yoshinobu Hotta
Hypothesis Preservation Approach to Scene Text Recognition with WeightedFinite-State Transducer ............................................................................................................................359
Takafumi Yamazoe, Minoru Etoh, Takeshi Yoshimura, and Kousuke Tsujino
Statistical Grouping for Segmenting Symbols Parts from Line Drawings,with Application to Symbol Spotting ..........................................................................................................364
Nibal Nayef and Thomas M. Breuel
Overlapped Handwriting Input on Mobile Phones ....................................................................................369Yanming Zou, Yingfei Liu, Ying Liu, and Kongqiao Wang
A Robust Color-Independent Text Detection Method from Complex Videos ...........................................374Yan Zhao, Tong Lu, and Wujun Liao
Handwritten and Audio Information Fusion for Mathematical SymbolRecognition ...............................................................................................................................................379
Sofiane Medjkoune, Harold Mouchère, Simon Petitrenaud,and Christian Viard-Gaudin
A Novel Skew Detection Technique Based on Vertical Projections .........................................................384A. Papandreou and B. Gatos
Discrimination of Old Document Images Using Their Style ......................................................................389Mickael Coustaty and Jean-Marc Ogier
Performance Evaluation of Algorithms for Newspaper Article Identification .............................................394Roberto Beretta and Luigi Laura
Table Detection in Noisy Off-line Handwritten Documents .......................................................................399Jin Chen and Daniel Lopresti
A Model-Based Ruling Line Detection Algorithm for Noisy HandwrittenDocuments ................................................................................................................................................404
Jin Chen and Daniel Lopresti
An On-line Arabic Handwriting Recognition System: Based on a New On-lineGraphemes Segmentation Technique ......................................................................................................409
Hesham M. Eraqi and Sherif Abdel Azeem
x
Keynote Speech 1Document Recognition without Strong Models .........................................................................................414
Henry S. Baird
Text Extraction (1)Detection and Segmentation of Antialiased Text in Screen Images .........................................................424
Sivan Gleichman, Boaz Ophir, Amir Geva, Mattias Marder, Ella Barkan,and Eli Packer
AdaBoost for Text Detection in Natural Scene .........................................................................................429Jung-Jin Lee, Pyoung-Hean Lee, Seong-Whan Lee, Alan Yuille, and Christof Koch
Dot Text Detection Based on FAST Points ...............................................................................................435Yuning Du, Haizhou Ai, and Shihong Lao
Text Detection and Character Recognition in Scene Images with UnsupervisedFeature Learning ......................................................................................................................................440
Adam Coates, Blake Carpenter, Carl Case, Sanjeev Satheesh, Bipin Suresh,Tao Wang, David J. Wu, and Andrew Y. Ng
Mathematics RecognitionMath Spotting: Retrieving Math in Technical Documents Using HandwrittenQuery Images ...........................................................................................................................................446
Richard Zanibbi and Li Yu
HAMEX - A Handwritten and Audio Dataset of Mathematical Expressions .............................................452Solen Quiniou, Harold Mouchère, Sebastián Pen Saldarriaga,Christian Viard-Gaudin, Emmanuel Morin, Simon Petitrenaud,and Sofiane Medjkoune
HMM-Based Recognition of Online Handwritten Mathematical Symbols UsingSegmental K-Means Initialization and a Modified Pen-Up/Down Feature ................................................457
Lei Hu and Richard Zanibbi
Comparing Approaches to Mathematical Document Analysis from PDF .................................................463Josef B. Baker, Alan P. Sexton, Volker Sorge, and Masakazu Suzuki
Applications (1)Preservative License Plate De-identification for Privacy Protection .........................................................468
Liang Du and Haibin Ling
Evaluation of Voting with Form Dropout Techniques for Ballot Vote Counting ........................................473Elisa H. Barney Smith, Shatakshi Goyal, Robbie Scott, and Daniel Lopresti
Conversion of PDF Books in ePub Format ...............................................................................................478Simone Marinai, Emanuele Marino, and Giovanni Soda
xi
Handwritten Street Name Recognition for Indian Postal Automation .......................................................483Umapada Pal, Ramit Kumar Roy, and Fumitaka Kimura
Layout AnalysisTable Content Understanding in SmartFIX ...............................................................................................488
Florian Deckert, Benjamin Seidler, Markus Ebbecke, and Michael Gillmann
Continuous CRF with Multi-scale Quantization Feature Functions Applicationto Structure Extraction in Old Newspaper .................................................................................................493
David Hebert, Thierry Paquet, and Stephane Nicolas
Classifying Textual Components of Bilingual Documents with Decision-TreeSupport Vector Machines .........................................................................................................................498
Xiao-Rong Lin, Chien-Yang Guo, and Fu Chang
Iterative Analysis of Pages in Document Collections for Efficient UserInteraction .................................................................................................................................................503
Joseph Chazalon, Bertrand Coüasnon, and Aurélie Lemaitre
Layout Analysis for Historical Manuscripts Using Sift Features ...............................................................508Angelika Garz, Robert Sablatnig, and Markus Diem
Handwrit en Text RecognitionJoint Optimization of Hidden Conditional Random Fields and Non LinearFeature Extraction ....................................................................................................................................513
Antoine Vinel, Trinh Minh Tri Do, and Thierry Artières
Improving Handwritten Chinese Text Recognition by ConfidenceTransformation ..........................................................................................................................................518
Qiu-Feng Wang, Fei Yin, and Cheng-Lin Liu
Concurrent Optimization of Context Clustering and GMM for OfflineHandwritten Word Recognition Using HMM .............................................................................................523
Tomoyuki Hamamura, Bunpei Irie, Takuya Nishimoto, Nobutaka Ono,and Shigeki Sagayama
Dempster-Shafer Based Rejection Strategy for Handwritten Word Recognition ......................................528Thomas Burger, Yousri Kessentini, and Thierry Paquet
Handwritten Text Recognition for Marriage Register Books .....................................................................533Verónica Romero, Joan Andreu Sánchez, Nicolás Serrano, and Enrique Vidal
Character Recognition (1)Limits on the Application of Frequency-Based Language Models to OCR ...............................................538
Ray Smith
xii
t
An Impact of OCR Errors on Automated Classification of OCR Japanese Textswith Parts-of-Speech Analysis ..................................................................................................................543
Akihiro Kokawa, Lazaro S.P. Busagala, Wataru Ohyama,Tetsushi Wakabayashi, and Fumitaka Kimura
Recognizing Characters with Severe Perspective Distortion Using HashTables and Perspective Invariants ............................................................................................................548
Pan Pan, Yuanping Zhu, Jun Sun, and Satoshi Naoi
An Automatic Method for Enhancing Character Recognition in DegradedHistorical Documents ................................................................................................................................553
Gabriel Pereira e Silva and Rafael Dueire Lins
Discriminative Bernoulli Mixture Models for Handwritten Digit Recognition .............................................558Adrià Giménez, J. Andrés-Ferrer, Alfons Juan, and Nicolás Serrano
Document SegmentationLanguage-Independent Text Lines Extraction Using Seam Carving ........................................................563
Raid Saabni and Jihad El-Sana
Template Based Segmentation of Touching Components in Handwritten TextLines .........................................................................................................................................................569
Le Kang and David Doermann
Graph Clustering-Based Ensemble Method for Handwritten Text LineSegmentation ............................................................................................................................................574
Vasant Manohar, Shiv N. Vitaladevuni, Huaigu Cao, Rohit Prasad,and Prem Natarajan
Text-Line Extraction Using a Convolution of Isotropic Gaussian Filter witha Set of Line Filters ...................................................................................................................................579
Syed Saqib Bukhari, Faisal Shafait, and Thomas M. Breuel
Fast Rule-Line Removal Using Integral Images and Support Vector Machines .......................................584Jayant Kumar and David Doermann
Online Handwriting RecognitionA Generative Model for Handwritings Based on Enhanced FeatureDesynchronization ....................................................................................................................................589
Seiichi Uchida, Toru Sasaki, and Feng Yaokai
Objective Function Design for MCE-Based Combination of On-line and Off-lineCharacter Recognizers for On-line Handwritten Japanese Text Recognition ..........................................594
Bilan Zhu, JinFeng Gao, and Masaki Nakagawa
A Weighted Finite-State Transducer (WFST)-Based Language Modelfor Online Indic Script Handwriting Recognition .......................................................................................599
Suhan Chowdhury, Utpal Garain, and Tanushyam Chattopadhyay
xiii
On-line Handwritten Japanese Characters Recognition Using a MRF Modelwith Parameter Optimization by CRF .......................................................................................................603
Bilan Zhu and Masaki Nakagawa
Symbol Knowledge Extraction from a Simple Graphical Language .........................................................608Jinpeng Li, Harold Mouchere, and Christian Viard-Gaudin
Forensic Document AnalysisSegmentation and Normalisation in Grapheme Codebooks ....................................................................613
Tara Gilliam, Richard C. Wilson, and John A. Clark
Evaluating the Rarity of Handwriting Formations ......................................................................................618Sargur N. Srihari
Multi-fractal Modeling for On-line Text-Independent Writer Identification .................................................623Aymen Chaabouni, Houcine Boubaker, Monji Kherallah, Adel M. Alimi,and Haikal El Abed
Writer Retrieval - Exploration of a Novel Biometric Scenario Using PerceptualFeatures Derived from Script Orientation .................................................................................................628
Vlad Atanasiu, Laurence Likforman-Sulem, and Nicole Vincent
Quality Analysis of Dynamic Signature Based on the Sigma-Lognormal Model ......................................633Javier Galbally, Julian Fierrez, Marcos Martinez-Diaz, and Réjean Plamondon
Poster Session 2An Improved Method Based on Weighted Grid Micro-structure Featurefor Text-Independent Writer Recognition ..................................................................................................638
Lu Xu, Xiaoqing Ding, Liangrui Peng, and Xin Li
A Multi-scale Text Line Segmentation Method in Freestyle HandwrittenDocuments ................................................................................................................................................643
Yangdong Gao, Xiaoqing Ding, and Changsong Liu
Digit/Symbol Pruning and Verification for Arabic Handwritten Digit/SymbolSpotting .....................................................................................................................................................648
Nicola Nobile, Chun Lei He, Malik Waqas Sagheer, Louisa Lam, and Ching Y. Suen
Modified Two-Class LDA Based Compound Distance for Similar HandwrittenChinese Characters Discrimination ..........................................................................................................653
Yunxue Shao, Chunheng Wang, Baihua Xiao, Rongguo Zhang, and Linbo Zhang
Error Correction with In-domain Training across Multiple OCR System Outputs .....................................658William B. Lund and Eric K. Ringger
Effects of Generating a Large Amount of Artificial Patterns for On-lineHandwritten Japanese Character Recognition .........................................................................................663
Bin Chen, Bilan Zhu, and Masaki Nakagawa
xiv
A Novel Short Merged Off-line Handwritten Chinese Character StringSegmentation Algorithm Using Hidden Markov Model .............................................................................668
Zhiwei Jiang, Xiaoqing Ding, Changsong Liu, and Yanwei Wang
Binarization of Textual Content in Video Frames .....................................................................................673Konstantinos Ntirogiannis, Basilis Gatos, and Ioannis Pratikakis
Word Retrieval in Historical Document Using Character-Primitives .........................................................678Partha Pratim Roy, Jean-Yves Ramel, and Nicolas Ragot
An On-line Handwritten Text Search Method Based on Directional FeatureMatching ...................................................................................................................................................683
Pasitthideth Luangvilay, Bilan Zhu, and Masaki Nakagawa
Text Localization in Real-World Images Using Efficiently Pruned ExhaustiveSearch ......................................................................................................................................................687
Lukáš Neumann and Jiří Matas
Classical Mongolian Words Recognition in Historical Document .............................................................692Guanglai Gao, Xiangdong Su, Hongxi Wei, and Yeyun Gong
A Novel Italic Detection and Rectification Method for Chinese AdvertisingImages ......................................................................................................................................................698
Jie Liu, Heping Li, Shuwu Zhang, and Wei Liang
Minimizing User Annotations in the Generation of Layout Ground-Truthed Data ....................................703Karim Hadjar and Rolf Ingold
An Improved Scene Text Extraction Method Using Conditional Random Fieldand Optical Character Recognition ...........................................................................................................708
Hongwei Zhang, Changsong Liu, Cheng Yang, Xiaoqing Ding, and KongQiao Wang
Identification of Indic Scripts on Torn-Documents ....................................................................................713Sukalpa Chanda, Katrin Franke, and Umapada Pal
A Contour-Based Method for Logo Detection ...........................................................................................718The Anh Pham, Mathieu Delalandre, and Sabine Barrat
A Contour-Based Progressive Technique for Shape Recognition ............................................................723Stefano Ferilli, Teresa M.A. Basile, Floriana Esposito, and Marenglen Biba
Localization of Digit Strings in Farsi/Arabic Document Images Using StructuralFeatures and Syntactical Analysis ............................................................................................................728
Ali Abedi and Karim Faez
Text/Graphics Segmentation in Architectural Floor Plans ........................................................................734Sheraz Ahmed, Markus Weber, Marcus Liwicki, and Andreas Dengel
OCR-Driven Writer Identification and Adaptation in an HMM HandwritingRecognition System ..................................................................................................................................739
Huaigu Cao, Rohit Prasad, and Prem Natarajan
xv
Handwritten and Typewritten Text Identification and Recognition Using HiddenMarkov Models .........................................................................................................................................744
Huaigu Cao, Rohit Prasad, and Prem Natarajan
Metadata Extraction System for Chinese Books ......................................................................................749Liangcai Gao, Yuan Zhong, Yingmin Tang, Zhi Tang, Xiaofan Lin, and Xuan Hu
A Fast Alignment Scheme for Automatic OCR Evaluation of Books ........................................................754Ismet Zeki Yalniz and R. Manmatha
Improving Scene Text Detection by Scale-Adaptive Segmentationand Weighted CRF Verification ................................................................................................................759
Yi-Feng Pan, Yuanping Zhu, Jun Sun, and Satoshi Naoi
Progressive Alignment and Discriminative Error Correction for Multiple OCREngines .....................................................................................................................................................764
William B. Lund, Daniel D. Walker, and Eric K. Ringger
Offline Writer Identification Using K-Adjacent Segments ..........................................................................769Rajiv Jain and David Doermann
Binarizing the Courtesy Amount Field on Color Chinese Bank Check Images ........................................774Dong Liu and Youbin Chen
A Table Detection Method for Multipage PDF Documents via VisualSeperators and Tabular Structures ...........................................................................................................779
Jing Fang, Liangcai Gao, Kun Bai, Ruiheng Qiu, Xin Tao, and Zhi Tang
Look Inside the World of Parts of Handwritten Characters .......................................................................784Wang Song, Seiichi Uchida, and Marcus Liwicki
Chinese Keyword Spotting Using Knowledge-Based Clustering ..............................................................789Yong Xia, Kuanquan Wang, and Mingwei Li
Text Segmentation of Consumer Magazines in PDF Format ...................................................................794Jian Fan
On-line Chinese Character Recognition System for Overlapping Samples .............................................799Xiang Wan, Changsong Liu, and Yanming Zou
On-line Signature Verification Using Segment-to-Segment Graph Matching ...........................................804Kaiyue Wang, Yunhong Wang, and Zhaoxiang Zhang
Snap and Translate Using Windows Phone .............................................................................................809Jun Du, Qiang Huo, Lei Sun, and Jian Sun
Comparative Study of Part-Based Handwritten Character RecognitionMethods ....................................................................................................................................................814
Wang Song, Seiichi Uchida, and Marcus Liwicki
A Keypoint-Based Approach toward Scenery Character Detection .........................................................819Seiichi Uchida, Yuki Shigeyoshi, Yasuhiro Kunishige, and Feng Yaokai
xvi
Three Dimensional Rotation-Free Recognition of Characters ..................................................................824Ryo Narita, Wataru Ohyama, Tetsushi Wakabayashi, and Fumitaka Kimura
A Novel Approach for Graphics Recognition Based on Galois Lattice and Bagof Words Representation ..........................................................................................................................829
Amani Boumaiza and Salvatore Tabbone
Effects of Line Densities on Nonlinear Normalization for Online HandwrittenJapanese Character Recognition .............................................................................................................834
Truyen Van Phan, JinFeng Gao, Bilan Zhu, and Masaki Nakagawa
Super-Resolved Binarization of Text Based on the FAIR Algorithm ........................................................839Thibault Lelore and Frédéric Bouchara
Writer Identification Using TF-IDF for Cursive Handwritten Word Recognition ........................................844Quang Anh Bui, Muriel Visani, Sophea Prum, and Jean-Marc Ogier
Creation and Analysis of a Corpus of Text Rich Indian TV Videos ..........................................................849T. Chattopadhyay, Soumik Sengupta, Aniruddha Sinha, and Nisha Rampuria
Text Classification and Document Layout Analysis of Paper Fragments .................................................854Markus Diem, Florian Kleber, and Robert Sablatnig
Touching Character Separation in Chinese Handwriting Using Visibility-BasedForeground Analysis .................................................................................................................................859
Liang Xu, Fei Yin, Qiu-Feng Wang, and Cheng-Lin Liu
Improved Automatic Analysis of Architectural Floor Plans .......................................................................864Sheraz Ahmed, Marcus Liwicki, Markus Weber, and Andreas Dengel
Subgraph Spotting through Explicit Graph Embedding: An Applicationto Content Spotting in Graphic Document Images ...................................................................................870
Muhammad Muzzamil Luqman, Jean-Yves Ramel, Josep Lladós,and Thierry Brouard
Exploiting Collection Level for Improving Assisted Handwritten WordTranscription of Historical Documents ......................................................................................................875
Laurent Guichard, Joseph Chazalon, and Bertrand Coüasnon
Embedding a Mathematical OCR Module into OCRopus .........................................................................880Shinpei Yamazaki, Fumihiro Furukori, Qinzheng Zhao, Keiichiro Shirai,and Masayuki Okamoto
Handwriting Character Recognition as a Service: A New HandwritingRecognition System Based on Cloud Computing .....................................................................................885
Yan Gao, Lanwen Jin, Cong He, and Guibin Zhou
Page Curling Correction for Scanned Books Using Local Distortion Information .....................................890Vladimir Kluzner and Asaf Tzadok
Image Enhancement for Degraded Binary Document Images .................................................................895Zhixin Shi, Srirangaraj Setlur, and Venu Govindaraju
xvii
Hybrid Approach to Adaptive OCR for Historical Books ...........................................................................900Vladimir Kluzner, Asaf Tzadok, Dan Chevion, and Eugene Walach
Restoration of Arbitrarily Warped Historical Document Images Using FlowLines .........................................................................................................................................................905
Maryam Rahnemoonfar and Apostolos Antonacopoulos
Towards Improving the Accuracy of Telugu OCR Systems ......................................................................910P. Pavan Kumar, Chakravarthy Bhagvati, Atul Negi, Arun Agarwal,and B. L. Deekshatulu
Correcting Specular Noise in Multiple Images of Photographed Documents ...........................................915Ednardo Mariano, Rafael Dueire Lins, Gabriel de França Pereira e Silva,Jian Fan, Peter Majewicz, and Marcelo Thielo
A Study on Automatic Chinese Text Classification ...................................................................................920Xi Luo, Wataru Ohyama, Tetsushi Wakabayashi, and Fumitaka Kimura
A New System for Recognition of Handwritten Persian Bank Checks .....................................................925Javad Sadri, Younes Akbari, Mohammad J. Jalili, Ahmad Farahi,and Maliheh Habibi
Dynamic Text Line Segmentation for Real-Time Recognition of ChineseHandwritten Sentences .............................................................................................................................931
Da-Han Wang and Cheng-Lin Liu
Character Enhancement for Historical Newspapers Printed Using Hot MetalTypesetting ...............................................................................................................................................936
Iuliu Konya, Stefan Eickeler, and Christoph Seibert
Character n-Gram Spotting in Document Images .....................................................................................941M. Sudha Praveen, K. Pramod Sankar, and C. V. Jawahar
Use of Semantic and Physical Constraints in Bayesian Networks for FormRecognition ...............................................................................................................................................946
Philippot Emilie, Belaïd Yolande, and Belaïd Abdel
Keynote Speech 2Chinese Paleography, Calligraphy, and Pattern Recognition: Stylesand Scripts in Excavated Ancient Chinese Documents ............................................................................951
Xing Wen
xviii
Applications (2)MCS for Online Mode Detection: Evaluation on Pen-Enabled Multi-touchInterfaces ..................................................................................................................................................957
Markus Weber, Marcus Liwicki, Yannik T. H. Schelske, Christopher Schoelzel,Florian Strauß, and Andreas Dengel
Discovering Legible Chinese Typefaces for Reading Digital Documents .................................................962Bing Zhang, Ying Li, Ching Y. Suen, and Xuemin Zhang
Detecting Figure-Panel Labels in Medical Journal Articles Using MRF ...................................................967Daekeun You, Sameer Antani, Dina Demner-Fushman, Venu Govindaraju,and George R. Thoma
A New Method on the Segmentation and Recognition of Chinese Charactersfor Automatic Chinese Seal Imprint Retrieval ...........................................................................................972
Chao Ren, Dong Liu, and Youbin Chen
Graphics RecognitionCalliGUI: Interactive Labeling of Calligraphic Character Images ..............................................................977
George Nagy and Xiafen Zhang
Symbol Spotting in Line Drawings through Graph Paths Hashing ...........................................................982Anjan Dutta, Josep Lladós, and Umapada Pal
A Non-rigid Feature Extraction Method for Shape Recognition ................................................................987Jon Almazán, Alicia Fornés, and Ernest Valveny
Low Resolution QR-Code Recognition by Applying Super-Resolution Usingthe Property of QR-Codes ........................................................................................................................992
Yuji Kato, Daisuke Deguchi, Tomokazu Takahashi, Ichiro Ide, and Hiroshi Murase
Character Recognition (2)Tuning between Exponential Functions and Zones for Membership FunctionsSelection in Voronoi-Based Zoning for Handwritten Character Recognition ............................................997
S. Impedovo and G. Pirlo
Multiple Instance Learning Based Method for Similar Handwritten ChineseCharacters Discrimination .......................................................................................................................1002
Yunxue Shao, Chunheng Wang, Baihua Xiao, Rongguo Zhang, and Yang Zhang
Perceptron Learning of Modified Quadratic Discriminant Function ........................................................1007Tong-Hua Su, Cheng-Lin Liu, and Xu-Yao Zhang
Similar Handwritten Chinese Character Recognition Using DiscriminativeLocality Alignment Manifold Learning .....................................................................................................1012
Dapeng Tao, Lingyu Liang, Lianwen Jin, and Yan Gao
xix
Keynote Speech 3The Four and a Half Challenges of Humanities Data .............................................................................1017
Marc Wilhelm Küster
Text Extraction (2)A Gradient Vector Flow-Based Method for Video Character Segmentation ...........................................1024
Trung Quy Phan, Palaiahnakote Shivakumara, Bolan Su, and Chew Lim Tan
Text Extraction from Video Using Conditional Random Fields ...............................................................1029Xujun Peng, Huaigu Cao, Rohit Prasad, and Premkumar Natarajan
Scene Text Extraction by Superpixel CRFs Combining Multiple CharacterFeatures ..................................................................................................................................................1034
Min Su Cho, Jae-Hyun Seok, Seonghun Lee, and Jin Hyung Kim
Bayesian Approach to Photo Time-Stamp Recognition .........................................................................1039Asif Shahab, Faisal Shafait, and Andreas Dengel
A Chinese Character Localization Method Based on Intergrating Structureand CC-Clustering for Advertising Images .............................................................................................1044
Jie Liu, Shuwu Zhang, Heping Li, and Wei Liang
Scenery Character Detection with Environmental Context .....................................................................1049Yasuhiro Kunishige, Feng Yaokai, and Seiichi Uchida
Document Retrieval (2)Real-Time Document Image Retrieval for a 10 Million Pages Database witha Memory Efficient and Stability Improved LLAH ...................................................................................1054
Kazutaka Takeda, Koichi Kise, and Masakazu Iwamura
Document Image Classification and Labeling Using Multiple Instance Learning ...................................1059Jayant Kumar, Jaishanker Pillai, and David Doermann
A Lattice-Based Method for Keyword Spotting in Online Chinese Handwriting .....................................1064Heng Zhang and Cheng-Lin Liu
A Graph Lattice Approach to Maintaining Dense Collections of Subgraphsas Image Features ..................................................................................................................................1069
Eric Saund
Similar Manga Retrieval Using Visual Vocabulary Based on Regionsof Interest ................................................................................................................................................1075
Weihan Sun and Koichi Kise
Case Study in Hebrew Character Searching ..........................................................................................1080Irina Rabaev, Ofer Biller, Jihad El-Sana, Klara Kedem, and Itshak Dinstein
xx
Character Recognition (3)Multiscale Histogram of Oriented Gradient Descriptors for Robust CharacterRecognition .............................................................................................................................................1085
Andrew J. Newell and Lewis D. Griffin
A Coarse Classifier Construction Method from a Large Number of BasicRecognizers for On-line Recognition of Handwritten Japanese Characters ..........................................1090
Bilan Zhu and Masaki Nakagawa
Affine-Invariant Recognition of Handwritten Characters via Accelerated KLDivergence Minimization .........................................................................................................................1095
Toru Wakahara and Yukihiko Yamashita
MQDF Discriminative Learning Based Offline Handwritten Chinese CharacterRecognition .............................................................................................................................................1100
Yanwei Wang, Xiaoqing Ding, and Changsong Liu
A Semi-supervised SVM Framework for Character Recognition ............................................................1105Amit Arora and Anoop M. Namboodiri
Efficient Word Recognition Using a Pixel-Based Dissimilarity Measure .................................................1110Sebastian Colutto and Basilis Gatos
Poster Session 3A Compression Scheme for Handwritten Patterns Based on Curve Fitting ...........................................1115
Kamal Gupta, Manish Bansal, and Santanu Chaudhury
Edge-Based Features for Localization of Artificial Urdu Text in Video Images ......................................1120Akhtar Jamil, Imran Siddiqi, Fahim Arif, and Ahsen Raza
Stamp Detection in Color Document Images ..........................................................................................1125Barbora Micenková and Joost van Beusekom
Trie-Lexicon-Driven Recognition for On-line Handwritten Japanese DiseaseNames Using a Time-Synchronous Method ...........................................................................................1130
Bilan Zhu and Masaki Nakagawa
Convolutional Neural Network Committees for Handwritten CharacterClassification ...........................................................................................................................................1135
Dan Claudiu Cireşan, Ueli Meier, Luca Maria Gambardella,and Jürgen Schmidhuber
Semantic Logging: Towards Explanation-Aware DAS ............................................................................1140Björn Forcher, Stefan Agne, Andreas Dengel, Michael Gillmann,and Thomas Roth-Berghofer
A Novel Preprocessing Method for Hectography Prints Based on IndependentComponent Analysis ...............................................................................................................................1145
Thomas Kurbiel, Iuliu Konya, and Stefan Eickeler
xxi
An Empirical Evaluation on HIT-OR3C Database ..................................................................................1150Shusen Zhou, Qingcai Chen, Xiaolong Wang, Xinyi Guo, and Hui Li
Greek Polytonic OCR Based on Efficient Character Class Number Reduction .....................................1155B. Gatos, G. Louloudis, and N. Stamatopoulos
Adaptive Zoning Features for Character and Word Recognition ............................................................1160B. Gatos, A. L. Kesidis, and A. Papandreou
A New Fourier-Moments Based Video Word and Character Extraction Methodfor Recognition ........................................................................................................................................1165
Deepak Rajendran, Palaiahnakote Shivakumara, Bolan Su, Shijian Lu,and Chew Lim Tan
Signature Segmentation from Machine Printed Documents Using ConditionalRandom Field .........................................................................................................................................1170
Ranju Mandal, Partha Pratim Roy, and Umapada Pal
Lexicon-Free, Novel Segmentation of Online Handwritten Indic Words .................................................1175Suresh Sundaram and A. G. Ramakrishan
Scale Space Binarization Using Edge Information Weighted by a ForegroundEstimation ...............................................................................................................................................1180
Florian Kleber, Markus Diem, and Robert Sablatnig
Multi Resolution Layout Analysis of Medieval Manuscripts Using Dynamic MLP ..................................1185Micheal Baechler and Rolf Ingold
Document Images Indexing with Relevance Feedback: An Applicationto Industrial Context ................................................................................................................................1190
O. Augereau, N. Journet, and J.-P. Domenger
Interactive Competitive Breadth-First Exploration for Sketch Interpretation ...........................................1195Achraf Ghorbel, Sébastien Macé, Aurélie Lemaitre, and Eric Anquetil
Document Image Indexing Using Edit Distance Based Hashing ............................................................1200Ehtesham Hassan, Santanu Chaudhury, and M. Gopal
New Binarization Approach Based on Text Block Extraction .................................................................1205Ines Ben Messaoud, Hamid Amiri, Haikal El Abed, and Volker Märgner
Searching OCR'ed Text: An LDA Based Approach ................................................................................1210Ehtesham Hassan, Vikram Garg, S. K. Mirajul Haque, Santanu Chaudhury,and M. Gopal
A CRF Based Scheme for Overlapping Multi-colored Text Graphics Separation ..................................1215Ritu Garg, Ehtesham Hassan, Santanu Chaudhury, and M. Gopal
Fuzzy Relative Positioning Templates for Symbol Recognition .............................................................1220Adrien Delaye and Eric Anquetil
Recognition of Printed Mathematical Expressions Using Two-DimensionalStochastic Context-Free Grammars .......................................................................................................1225
Francisco Álvaro, Joan-Andreu Sánchez, and José-Miguel Benedí
xxii
Document Recto-verso Registration Using a Dynamic Time Warping Algorithm ...................................1230Rabeux Vincent, Journet Nicholas, and Domenger Jean Philippe
Automatic Content Extraction on Semi-structured Documents ..............................................................1235José Eduardo Bastos dos Santos
Video Script Identification Based on Text Lines .....................................................................................1240Trung Quy Phan, Palaiahnakote Shivakumara, Zhang Ding, Shijian Lu,and Chew Lim Tan
Extending Page Segmentation Algorithms for Mixed-Layout DocumentProcessing ..............................................................................................................................................1245
Amy Winder, Tim Andersen, and Elisa H. Barney Smith
Better Digit Recognition with a Committee of Simple Neural Nets .........................................................1250Ueli Meier, Dan Claudiu Cireşan, Luca Maria Gambardella,and Jürgen Schmidhuber
Towards Improved Paper-Based Election Technology ..........................................................................1255Elisa H. Barney Smith, Daniel Lopresti, George Nagy, and Ziyan Wu
An Evaluation of HMM-Based Techniques for the Recognition of ScreenRendered Text ........................................................................................................................................1260
Sheikh Faisal Rashid, Faisal Shafait, and Thomas M. Breuel
A System for an Automatic Reading of Student Information Sheets ......................................................1265Afef Kacem, Asma Saïdani, and Abdel Belaïd
Wall Patch-Based Segmentation in Architectural Floorplans .................................................................1270Lluís-Pere de las Heras, Joan Mas, Gemma Sánchez, and Ernest Valveny
High Performance Layout Analysis of Arabic and Urdu Document Images ...........................................1275Syed Saqib Bukhari, Faisal Shafait, and Thomas M. Breuel
Automatically Discriminating between Digital and Scanned Photographs .............................................1280Rafael Dueire Lins, Gabriel de França Pereira e Silva, and Steven J. Simske
A Discriminative Model for On-line Handwritten Japanese Text Retrieval .............................................1285Cheng Cheng, Bilan Zhu, and Masaki Nakagawa
A Circular Grid-Based Rotation Invariant Feature Extraction Approachfor Off-line Signature Verification ............................................................................................................1289
Marianela Parodi, Juan C. Gómez, and Abdel Belaïd
Fringe Map Based Text Line Segmentation of Printed Telugu DocumentImages ....................................................................................................................................................1294
Vijaya Kumar Koppula and Atul Negi
Combining of Off-line and On-line Feature Extraction Approaches for WriterIdentification ............................................................................................................................................1299
Aymen Chaabouni, Houcine Boubaker, Monji Kherallah, Adel M. Alimi,and Haikal El Abed
xxiii
On-line Arabic Handwritten Personal Names Recognition System Basedon HMM ..................................................................................................................................................1304
Sherif Abdelazeem and Hesham M. Eraqi
Using Earth Mover's Distance in the Bag-of-Visual-Words Modelfor Mathematical Symbol Retrieval .........................................................................................................1309
Simone Marinai, Beatrice Miotti, and Giovanni Soda
Enhancing Handwritten Word Segmentation by Employing Local SpatialFeatures ..................................................................................................................................................1314
Fotini Simistira, Vassilis Papavassiliou, Themos Stafylakis, and Vassilis Katsouros
Symbol Recognition by Multiresolution Shape Context Matching ..........................................................1319Feng Su, Tong Lu, and Ruoyu Yang
On-line Arabic Handwriting Recognition System Based on HMM ..........................................................1324Hany Ahmed and Sherif Abdel Azeem
Recognizing Text Elements for SVG Comic Compression and Its NovelApplications ............................................................................................................................................1329
Chung-Yuan Su, Ray-I Chang, and Jen-Chang Liu
Facilitating Understanding of Large Document Collections ....................................................................1334Jae Hyeon Bae, Weijia Xu, and Maria Esteva
Translation-Inspired OCR .......................................................................................................................1339Dmitriy Genzel, Ashok C. Popat, Nemanja Spasojevic, Michael Jahr,Andrew Senior, Eugene Ie, and Frank Yung-Fong Tang
Towards Searchable Digital Urdu Libraries - A Word Spotting Based RetrievalApproach ................................................................................................................................................1344
Ali Abidi, Imran Siddiqi, and Khurram Khurshid
Word Warping for Offline Handwriting Recognition ................................................................................1349Douglas J. Kennard, William A. Barrett, and Thomas W. Sederberg
Script-Free Text Line Segmentation Using Interline Space Model for PrintedDocument Images ...................................................................................................................................1354
Minwoo Kim and Il-Seok Oh
Text Localization in Web Images Using Probabilistic Candidate SelectionModel ......................................................................................................................................................1359
Liangji Situ, Ruizhe Liu, and Chew Lim Tan
Functional-Based Table Category Identification in Digital Library ..........................................................1364Seongchan Kim and Ying Liu
Chinese Chess Character Recognition with Radial Harmonic Fourier Moments ...................................1369Wang Kejia, Zhang Honggang, Ping Ziliang, and Haiying
Non-rigid Registration and Restoration of Double-Sided Historical Manuscripts ...................................1374Jie Wang and Chew Lim Tan
xxiv
A Fast Appearance-Based Full-Text Search Method for Historical NewspaperImages ....................................................................................................................................................1379
Kengo Terasawa, Takahiro Shima, and Toshio Kawashima
Reliable Online Stroke Recovery from Offline Data with the Data-EmbeddingPen ..........................................................................................................................................................1384
Marcus Liwicki, Yoshida Akira, Seiichi Uchida, Masakazu Iwamura,Shinichiro Omachi, and Koichi Kise
Online Handwriting Recognition of Tamil Script Using Fractal Geometry ..............................................1389Rituraj Kunwar and A. G. Ramakrishnan
Connected Component Level Discrimination of Handwrittenand Machine-Printed Text Using Eigenfaces ..........................................................................................1394
Samuel J. Pinson and William A. Barrett
Recognition of Multi-oriented, Multi-sized, and Curved Text ..................................................................1399Yao-Yi Chiang and Craig A. Knoblock
Scenario Driven In-depth Performance Evaluation of Document LayoutAnalysis Methods ....................................................................................................................................1404
C. Clausner, S. Pletschacher, and A. Antonacopoulos
Recognition of Multiple Characters in a Scene Image Using Arrangementof Local Features ....................................................................................................................................1409
Masakazu Iwamura, Takuya Kobayashi, and Koichi Kise
Quality Evaluation of Character Image Database and Its Application ....................................................1414Hiroyuki Hase
Mathematical Formula Identification in PDF Documents ........................................................................1419Xiaoyan Lin, Liangcai Gao, Zhi Tang, Xiaofan Lin, and Xuan Hu
Panel DiscussionEvaluation of Fonts for Digital Publishing and Display ...........................................................................1424
C. Y. Suen, N. Dumont, M. Dyson, Y.-C. Tai, and X. Lu
CompetitionsInternational Conference on Document Analysis and Recognition (ICDAR2011) - Competitions Overview ..............................................................................................................1437
Haikal El Abed, Liu Wenyin, and Volker Märgner
ICDAR 2011 - Arabic Handwriting Recognition Competition ..................................................................1444Volker Märgner and Haikal El Abed
ICDAR 2011 - Arabic Recognition Competition: Multi-font Multi-size DigitallyRepresented Text ...................................................................................................................................1449
Fouad Slimane, Slim Kanoun, Haikal El Abed, Adel M. Alimi, Rolf Ingold,and Jean Hennebert
xxv
Online Arabic Handwriting Recognition Competition ..............................................................................1454Monji Kherallah, Najiba Tagougui, Adel M. Alimi, Haikal El Abed,and Volker Märgner
ICDAR 2011 - French Handwriting Recognition Competition .................................................................1459Emmanuèle Grosicki and Haikal El-Abed
ICDAR 2011 Chinese Handwriting Recognition Competition .................................................................1464Cheng-Lin Liu, Fei Yin, Qiu-Feng Wang, and Da-Han Wang
The ICDAR2011 Arabic Writer Identification Contest .............................................................................1470Abdelâali Hassaïne, Somaya Al-Maadeed, Jihad Mohamad Alja'am, Ali Jaoua,and Ahmed Bouridane
ICDAR 2011 Writer Identification Contest ..............................................................................................1475G. Louloudis, N. Stamatopoulos, and B. Gatos
Signature Verification Competition for Online and Offline Skilled Forgeries(SigComp2011) .......................................................................................................................................1480
Marcus Liwicki, Muhammad Imran Malik, C. Elisa van den Heuvel,Xiaohong Chen, Charles Berger, Reinoud Stoel, Michael Blumenstein,and Bryan Found
ICDAR 2011 Robust Reading Competition - Challenge 1: Reading Textin Born-Digital Images (Web and Email) .................................................................................................1485
D. Karatzas, S. Robles Mestre, J. Mas, F. Nourbakhsh, and P. Pratim Roy
ICDAR 2011 Robust Reading Competition Challenge 2: Reading Textin Scene Images .....................................................................................................................................1491
Asif Shahab, Faisal Shafait, and Andreas Dengel
CROHME2011: Competition on Recognition of Online HandwrittenMathematical Expressions ......................................................................................................................1497
Harold Mouchère, Christian Viard-Gaudin, Dae Hwan Kim, Jin Hyung Kim,and Utpal Garain
ICDAR 2011 Book Structure Extraction Competition ..............................................................................1501Antoine Doucet, Gabriella Kazai, and Jean-Luc Meunier
ICDAR 2011 Document Image Binarization Contest (DIBCO 2011) ......................................................1506Ioannis Pratikakis, Basilis Gatos, and Konstantinos Ntirogiannis
The ICDAR 2011 Music Scores Competition: Staff Removal and WriterIdentification ............................................................................................................................................1511
Alicia Fornés, Anjan Dutta, Albert Gordo, and Josep Lladós
Historical Document Layout Analysis Competition .................................................................................1516A. Antonacopoulos, C. Clausner, C. Papadopoulos, and S. Pletschacher
Document Analysis Algorithm Contributions in End-to-End Applications:Report on the ICDAR 2011 Contest .......................................................................................................1521
Bart Lamiroy, Daniel Lopresti, and Tao Sun
xxvi
Author Index
xxvii