Optical Character Recognition Algorithms And Systems
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Optical Character Recognition Algorithms And Systems
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Author : Richard Johnson
language : en
Publisher: HiTeX Press
Release Date : 2025-06-15
Optical Character Recognition Algorithms And Systems written by Richard Johnson and has been published by HiTeX Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-06-15 with Computers categories.
"Optical Character Recognition Algorithms and Systems" Designed for researchers, engineers, and advanced practitioners, "Optical Character Recognition Algorithms and Systems" offers a comprehensive exploration of the theory, algorithms, and architectures underpinning modern OCR technology. The book begins by grounding the reader in the mathematical formalism and theoretical foundations essential for understanding character recognition, tracing the historical evolution from early optical readers to artificial intelligence-powered systems. It presents a thorough taxonomy of OCR engines and delineates the rigorous benchmarking protocols required to assess advancement in this field. Covering the entire OCR pipeline, the text delves deeply into document image acquisition, preprocessing, and segmentation—addressing challenges posed by varied input devices, physical and digital noise, and complex page layouts. Subsequent chapters explore sophisticated feature extraction techniques, from classical handcrafted features to state-of-the-art deep learning representations, and provide an authoritative treatment of recognition models, including statistical classifiers, kernel methods, and advanced neural architectures such as attention mechanisms and transformers. The book pays particular attention to multilingual and handwritten text recognition, describing domain-specific algorithms, script detection strategies, and the unique obstacles presented by cursive and overlapping characters. Rounding out its approach, the book analyzes essential postprocessing techniques—including error correction, language modeling, and active learning—as well as practical considerations for deploying OCR at scale. Readers will find in-depth discussions on modular and real-time architectures, integration with enterprise workflows, and security and privacy in distributed systems. The concluding chapters highlight the latest advancements, from scene and video text recognition to augmented reality applications, and outline open research challenges, making this volume an indispensable reference for anyone advancing the state of document analysis and recognition.
Optical Character Recognition Systems For Different Languages With Soft Computing
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Author : Arindam Chaudhuri
language : en
Publisher: Springer
Release Date : 2016-12-23
Optical Character Recognition Systems For Different Languages With Soft Computing written by Arindam Chaudhuri and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-12-23 with Technology & Engineering categories.
The book offers a comprehensive survey of soft-computing models for optical character recognition systems. The various techniques, including fuzzy and rough sets, artificial neural networks and genetic algorithms, are tested using real texts written in different languages, such as English, French, German, Latin, Hindi and Gujrati, which have been extracted by publicly available datasets. The simulation studies, which are reported in details here, show that soft-computing based modeling of OCR systems performs consistently better than traditional models. Mainly intended as state-of-the-art survey for postgraduates and researchers in pattern recognition, optical character recognition and soft computing, this book will be useful for professionals in computer vision and image processing alike, dealing with different issues related to optical character recognition.
Optical Character Recognition
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Author : Stephen V. Rice
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Optical Character Recognition written by Stephen V. Rice and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Computers categories.
Optical character recognition (OCR) is the most prominent and successful example of pattern recognition to date. There are thousands of research papers and dozens of OCR products. Optical Character Rcognition: An Illustrated Guide to the Frontier offers a perspective on the performance of current OCR systems by illustrating and explaining actual OCR errors. The pictures and analysis provide insight into the strengths and weaknesses of current OCR systems, and a road map to future progress. Optical Character Recognition: An Illustrated Guide to the Frontier will pique the interest of users and developers of OCR products and desktop scanners, as well as teachers and students of pattern recognition, artificial intelligence, and information retrieval. The first chapter compares the character recognition abilities of humans and computers. The next four chapters present 280 illustrated examples of recognition errors, in a taxonomy consisting of Imaging Defects, Similar Symbols, Punctuation, and Typography. These examples were drawn from large-scale tests conducted by the authors. The final chapter discusses possible approaches for improving the accuracy of today's systems, and is followed by an annotated bibliography. Optical Character Recognition: An Illustrated Guide to the Frontier is suitable as a secondary text for a graduate level course on pattern recognition, artificial intelligence, and information retrieval, and as a reference for researchers and practitioners in industry.
Graphics Recognition Algorithms And Systems
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Author : Karl Tombre
language : en
Publisher: Springer Science & Business Media
Release Date : 1998-04-08
Graphics Recognition Algorithms And Systems written by Karl Tombre and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998-04-08 with Computers categories.
This book constitutes the strictly refereed post-workshop proceedings of the Second International Workshop on Graphics Recognition, GREC'97, held in Nancy, France, in August 1997. The 34 thoroughly revised full papers presented were carefully selected for inclusion in the book on the basis of a second round of post-workshop reviewing. The book is divided into sections on vectorization and segmentation, symbol recognition, form processing, map processing, engineering drawings, applications and systems, performance evaluation, and a graphics recognition contest.
Optical Character Recognition Technologies And Algorithms
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Author : Richard Johnson
language : en
Publisher: HiTeX Press
Release Date : 2025-06-14
Optical Character Recognition Technologies And Algorithms written by Richard Johnson and has been published by HiTeX Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2025-06-14 with Computers categories.
"Optical Character Recognition Technologies and Algorithms" "Optical Character Recognition Technologies and Algorithms" presents a comprehensive exploration of the principles, methodologies, and advances underpinning OCR systems. The book starts with a thorough historical overview, delineating the progression of OCR technology from its foundational milestones to the sophisticated, context-aware solutions of today. Readers are introduced to the taxonomy of OCR systems, end-to-end workflows, benchmark datasets, and the critical challenges faced in processing multilingual, noisy, and complex textual data. The subsequent chapters delve deeply into every core layer of the OCR pipeline. Detailed discussions address document image acquisition, preprocessing, sophisticated segmentation, and structural analysis techniques required for robust text isolation and extraction. The book covers traditional handcrafted feature engineering as well as cutting-edge deep learning models for feature representation, and thoroughly examines classic and modern recognition algorithms, including template matching, statistical classifiers, HMMs, CNNs, RNNs, and transformer-based architectures. The integration of lexical and statistical language models, postprocessing strategies, and effective adaptation to multilingual and specialized domains are thoroughly addressed, equipping readers with a holistic view of the modern OCR landscape. Furthermore, the text investigates advanced topics such as handwriting recognition, scene text extraction, and robust handling of complex scripts and adversarial attacks. It offers practical guidance on deploying OCR systems at scale, covering modular design, cloud and edge deployments, hardware acceleration, and integration into enterprise environments while ensuring security and privacy. Rich with evaluation protocols, real-world industrial case studies, and insights into emerging trends and open research challenges, this book is an indispensable resource for practitioners, researchers, and engineers aiming to master OCR technologies and drive future innovations.
Handbook Of Character Recognition And Document Image Analysis
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Author : Horst Bunke
language : en
Publisher: World Scientific
Release Date : 1997
Handbook Of Character Recognition And Document Image Analysis written by Horst Bunke and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997 with Computers categories.
Optical character recognition and document image analysis have become very important areas with a fast growing number of researchers in the field. This comprehensive handbook with contributions by eminent experts, presents both the theoretical and practical aspects at an introductory level wherever possible.
Character Recognition Systems
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Author : Mohamed Cheriet
language : en
Publisher: John Wiley & Sons
Release Date : 2007-11-27
Character Recognition Systems written by Mohamed Cheriet and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2007-11-27 with Technology & Engineering categories.
"Much of pattern recognition theory and practice, including methods such as Support Vector Machines, has emerged in an attempt to solve the character recognition problem. This book is written by very well-known academics who have worked in the field for many years and have made significant and lasting contributions. The book will no doubt be of value to students and practitioners." -Sargur N. Srihari, SUNY Distinguished Professor, Department of Computer Science and Engineering, and Director, Center of Excellence for Document Analysis and Recognition (CEDAR), University at Buffalo, The State University of New York "The disciplines of optical character recognition and document image analysis have a history of more than forty years. In the last decade, the importance and popularity of these areas have grown enormously. Surprisingly, however, the field is not well covered by any textbook. This book has been written by prominent leaders in the field. It includes all important topics in optical character recognition and document analysis, and is written in a very coherent and comprehensive style. This book satisfies an urgent need. It is a volume the community has been awaiting for a long time, and I can enthusiastically recommend it to everybody working in the area." -Horst Bunke, Professor, Institute of Computer Science and Applied Mathematics (IAM), University of Bern, Switzerland In Character Recognition Systems, the authors provide practitioners and students with the fundamental principles and state-of-the-art computational methods of reading printed texts and handwritten materials. The information presented is analogous to the stages of a computer recognition system, helping readers master the theory and latest methodologies used in character recognition in a meaningful way. This book covers: * Perspectives on the history, applications, and evolution of Optical Character Recognition (OCR) * The most widely used pre-processing techniques, as well as methods for extracting character contours and skeletons * Evaluating extracted features, both structural and statistical * Modern classification methods that are successful in character recognition, including statistical methods, Artificial Neural Networks (ANN), Support Vector Machines (SVM), structural methods, and multi-classifier methods * An overview of word and string recognition methods and techniques * Case studies that illustrate practical applications, with descriptions of the methods and theories behind the experimental results Each chapter contains major steps and tricks to handle the tasks described at-hand. Researchers and graduate students in computer science and engineering will find this book useful for designing a concrete system in OCR technology, while practitioners will rely on it as a valuable resource for the latest advances and modern technologies that aren't covered elsewhere in a single book.
Proceedings Of The 3rd International Conference On Frontiers Of Intelligent Computing Theory And Applications Ficta 2014
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Author : Suresh Chandra Satapathy
language : en
Publisher: Springer
Release Date : 2014-10-31
Proceedings Of The 3rd International Conference On Frontiers Of Intelligent Computing Theory And Applications Ficta 2014 written by Suresh Chandra Satapathy and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-10-31 with Technology & Engineering categories.
This volume contains 87 papers presented at FICTA 2014: Third International Conference on Frontiers in Intelligent Computing: Theory and Applications. The conference was held during 14-15, November, 2014 at Bhubaneswar, Odisha, India. This volume contains papers mainly focused on Network and Information Security, Grid Computing and Clod Computing, Cyber Security and Digital Forensics, Computer Vision, Signal, Image & Video Processing, Software Engineering in Multidisciplinary Domains and Ad-hoc and Wireless Sensor Networks.
Optical Character Recognition
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Author : John W. T. Smith
language : en
Publisher: Boston Spa, Wetherby, West Yorkshire : British Library ; Dover, N.H., USA : In the USA and Canada distributed by Longwood Publishing Group
Release Date : 1985
Optical Character Recognition written by John W. T. Smith and has been published by Boston Spa, Wetherby, West Yorkshire : British Library ; Dover, N.H., USA : In the USA and Canada distributed by Longwood Publishing Group this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Computers categories.
Library science research report on optical character recognition electronic equipment (information technology) in the UK - considers the results of a survey of special librarys and information centres with regard to attitudes of information users and non-users towards OCR; presents case studies of OCR applications in two research centres, a chemical industrial enterprise and a county library. Diagrams, glossary, references, statistical tables.
Optical Character Recognition
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Author : Shunji Mori
language : en
Publisher: Wiley-Interscience
Release Date : 1999-04-13
Optical Character Recognition written by Shunji Mori and has been published by Wiley-Interscience this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-04-13 with Technology & Engineering categories.
As optical character recognition (OCR) begins to find applicationsranging from store checkout scanners to money-changing machines andpostal system automation, it has become one of the most dynamicareas in information science today. Yet few volumes explore thisdata-oriented process without relying heavily on mathematicalbackground reading. Now, Shunji Mori, Hirobumi Nishida, and Hiromitsu Yamada, among thefield's most respected researchers since its inception, presentthis self-contained, clearly written guidebook to OCR--the firstcomprehensive treatment of the preprocessing, feature-extraction,and systematic description-matching stages of the OCR process.Including a wealth of original research material available here forthe first time, this book is both an ideal professional referencesource and an excellent entry point for course work in thesubject. Key features of Optical Character Recognition: * Theoretical framework based on functional analysis--notpreviously available in a detailed, English-language version * Extensive explanation of preprocessing theory, including blurringand sampling, normalization, thinning, and binary and gray-scalemorphology * Intensive section on feature extraction, exploring linearmethods, structure analysis, and algebraic description * Original work on systematic shape description as a prerequisiteto matching * Original material on elastic matching, including imagerecognition of characters and objects * Requires only the standard undergraduate requisites of algebra,linear algebra, and advanced calculus