Download e-book for kindle: Character Recognition Systems: A Guide for Students and by Mohamed Cheriet, Nawwaf Kharma, Cheng-Lin Liu, Ching Suen

By Mohamed Cheriet, Nawwaf Kharma, Cheng-Lin Liu, Ching Suen

ISBN-10: 0471415707

ISBN-13: 9780471415701

A lot of development popularity conception and perform, together with tools resembling aid Vector Machines, has emerged in an try to remedy the nature acceptance challenge. This publication is written by means of very recognized lecturers who've labored within the box for a few years and feature made major and lasting contributions. The booklet will without doubt be of price to scholars and practitioners. -Sargur N. Srihari, SUNY exceptional Professor, division of computing device technology and Engineering, and Director, heart of Excellence for record research and popularity (CEDAR), collage at Buffalo, The country collage of latest York

''The disciplines of optical personality reputation and record photo research have a background of greater than 40 years. within the final decade, the significance and recognition of those components have grown tremendously. unusually, notwithstanding, the sphere isn't good coated via any textbook. This publication has been written by means of favorite leaders within the box. It contains all vital issues in optical personality popularity and record research, and is written in a truly coherent and complete kind. This ebook satisfies an pressing desire. it's a quantity the group has been watching for for a very long time, and that i can enthusiastically suggest it to all people operating within the area.'' -Horst Bunke, Professor, Institute of computing device technological know-how and utilized arithmetic (IAM), college of Bern, Switzerland

In personality reputation platforms, the authors supply practitioners and scholars with the elemental ideas and state of the art computational equipment of examining published texts and handwritten fabrics. the data offered is similar to the levels of a working laptop or computer attractiveness process, aiding readers grasp the idea and newest methodologies utilized in personality acceptance in a significant manner.

This publication covers: *

Perspectives at the background, functions, and evolution of Optical personality acceptance (OCR) *

The most generally used pre-processing concepts, in addition to tools for extracting personality contours and skeletons *

Evaluating extracted gains, either structural and statistical *

Modern type equipment which are profitable in personality popularity, together with statistical equipment, man made Neural Networks (ANN), aid Vector Machines (SVM), structural tools, and multi-classifier tools *

An assessment of observe and string reputation equipment and methods *

Case reviews that illustrate sensible functions, with descriptions of the tools and theories at the back of the experimental effects

Each bankruptcy comprises significant steps and tips to deal with the projects defined at-hand. Researchers and graduate scholars in machine technology and engineering will locate this publication necessary for designing a concrete approach in OCR know-how, whereas practitioners will depend upon it as a worthwhile source for the most recent advances and glossy applied sciences that are not coated in different places in one publication.

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Extra resources for Character Recognition Systems: A Guide for Students and Practitioners

Example text

Test accuracies (%) of individual classifiers, oracle, and DCS. Accuracies (%) of combination at abstract level: plurality vote and trained rules. Accuracies (%) of combination at measurement level: fixed and trained rules. Affinity-bits based control of the merger mechanism. Maximum training and validation accuracies for the binary classifiers. Percentage agreement in errors made by classifiers by digit. Accuracies (%) of 4-orientation and 8-direction chaincode feature by zoning and by blurring on ETL9B database.

As a result, very high recognition rates became achievable at high speed and at reasonable costs. Such accomplishments also brought better printing qualities of data and paper for practical applications. Actually, they completely revolutionalized the data input industry [6] and eliminated the jobs of thousands of keypunch operators who were doing the really mundane work of keying data into the computer. 3 DEVELOPMENT OF NEW TECHNIQUES As OCR research and development advanced, demands on handwriting recognition also increased because a lot of data (such as addresses written on envelopes; amounts written on checks; names, addresses, identity numbers, and dollar values written on invoices and forms) were written by hand and they had to be entered into the computer for processing.

There is a great amount of information loss, resulting in characters with the presence of noise and unnecessary information. Visual shapes of handwriting characters are very important in improving recognition [10, 27]; results will depend mostly on the quality of the extracted characters. Therefore, it is necessary to perform a preprocessing procedure 22 TOOLS FOR IMAGE PREPROCESSING to extract the pertinent information before applying the recognition algorithm. For this purpose, various mathematical tools have been developed; multiscale representation has received considerable interest in this field because of its efficiency in describing real-world structures [17].

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Character Recognition Systems: A Guide for Students and Practitioners by Mohamed Cheriet, Nawwaf Kharma, Cheng-Lin Liu, Ching Suen

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