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Computer Text Recognition and Error Correction

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Author :
Release : 1985
Genre : Computers
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis Computer Text Recognition and Error Correction by : Sargur N. Srihari

Download or read book Computer Text Recognition and Error Correction written by Sargur N. Srihari. This book was released on 1985. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this tutorial is to introduce the reader to the methodologies and the knowledge representation techniques currently used in automatic text error correction and text interpretation. Aimed at computer researchers interested in developing flexible techniques for text processing and computer vision. The selected papers cover a wide context of literature, and a wider span of time.

Handbook of Character Recognition and Document Image Analysis

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Author :
Release : 1997
Genre : Computers
Kind : eBook
Book Rating : 703/5 ( reviews)

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Book Synopsis Handbook of Character Recognition and Document Image Analysis by : Horst Bunke

Download or read book Handbook of Character Recognition and Document Image Analysis written by Horst Bunke. This book was released on 1997. Available in PDF, EPUB and Kindle. Book excerpt: 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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Release : 2007-11-27
Genre : Technology & Engineering
Kind : eBook
Book Rating : 528/5 ( reviews)

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Book Synopsis Character Recognition Systems by : Mohamed Cheriet

Download or read book Character Recognition Systems written by Mohamed Cheriet. This book was released on 2007-11-27. Available in PDF, EPUB and Kindle. Book excerpt: "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.

A Contextual Postprocessing System for Error Detection and Correction in Character Recognition

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Release : 1972
Genre : Computational linguistics
Kind : eBook
Book Rating : /5 ( reviews)

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Book Synopsis A Contextual Postprocessing System for Error Detection and Correction in Character Recognition by : Edward M. Riseman

Download or read book A Contextual Postprocessing System for Error Detection and Correction in Character Recognition written by Edward M. Riseman. This book was released on 1972. Available in PDF, EPUB and Kindle. Book excerpt: The paper is an examination of the effectiveness of various forms of contextual information in a postprocessing system for detection and correction of errors in words. Various algorithms using context are considered, from a dictionary algorithm which has available the maximum amount of information, to a set of contextual algorithms using binary n-gram statistics. The latter information differs from the usual n-gram letter statistics in that the probabilities are position-dependent and each is quantized to 1 or 0 depending upon whether or not it is nonzero. This type of information is extremely compact and the computation for error correction is orders of magnitude less than that required by the dictionary algorithm. The techniques described in the paper can allow relatively poor classifiers to become reliable systems by drastically cutting error rates with only modest reject rates. Experimental results are presented on the error, correction, and reject rates that are achievable as a function of the type of contextual information employed, and the size of the data base from which this information is obtained. (Author).

Error Correction Coding

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Release : 2005-06-06
Genre : Computers
Kind : eBook
Book Rating : 000/5 ( reviews)

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Book Synopsis Error Correction Coding by : Todd K. Moon

Download or read book Error Correction Coding written by Todd K. Moon. This book was released on 2005-06-06. Available in PDF, EPUB and Kindle. Book excerpt: An unparalleled learning tool and guide to error correction coding Error correction coding techniques allow the detection and correction of errors occurring during the transmission of data in digital communication systems. These techniques are nearly universally employed in modern communication systems, and are thus an important component of the modern information economy. Error Correction Coding: Mathematical Methods and Algorithms provides a comprehensive introduction to both the theoretical and practical aspects of error correction coding, with a presentation suitable for a wide variety of audiences, including graduate students in electrical engineering, mathematics, or computer science. The pedagogy is arranged so that the mathematical concepts are presented incrementally, followed immediately by applications to coding. A large number of exercises expand and deepen students' understanding. A unique feature of the book is a set of programming laboratories, supplemented with over 250 programs and functions on an associated Web site, which provides hands-on experience and a better understanding of the material. These laboratories lead students through the implementation and evaluation of Hamming codes, CRC codes, BCH and R-S codes, convolutional codes, turbo codes, and LDPC codes. This text offers both "classical" coding theory-such as Hamming, BCH, Reed-Solomon, Reed-Muller, and convolutional codes-as well as modern codes and decoding methods, including turbo codes, LDPC codes, repeat-accumulate codes, space time codes, factor graphs, soft-decision decoding, Guruswami-Sudan decoding, EXIT charts, and iterative decoding. Theoretical complements on performance and bounds are presented. Coding is also put into its communications and information theoretic context and connections are drawn to public key cryptosystems. Ideal as a classroom resource and a professional reference, this thorough guide will benefit electrical and computer engineers, mathematicians, students, researchers, and scientists.

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