Download Optical Character Recognition Systems for Different by Arindam Chaudhuri, Krupa Mandaviya, Pratixa Badelia, Soumya PDF

By Arindam Chaudhuri, Krupa Mandaviya, Pratixa Badelia, Soumya K Ghosh

The e-book deals a accomplished survey of soft-computing types for optical personality popularity structures. some of the recommendations, together with fuzzy and tough units, synthetic neural networks and genetic algorithms, are validated utilizing actual texts written in several languages, similar to English, French, German, Latin, Hindi and Gujrati, which were extracted via publicly on hand datasets. The simulation stories, that are said in information the following, express that soft-computing dependent modeling of OCR structures plays regularly higher than conventional versions. generally meant as state of the art survey for postgraduates and researchers in development reputation, optical personality acceptance and gentle computing, this ebook can be invaluable for pros in computing device imaginative and prescient and photograph processing alike, facing diverse matters with regards to optical personality recognition.

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Extra resources for Optical Character Recognition Systems for Different Languages with Soft Computing

Example text

This is actually automatic address reading technology for mail sorting. Hence, the goal is to direct each letter into appropriate bin regardless of whether each character was correctly recognized or not. The general approach is to read all information available and use postcode as redundancy check. The acceptance rate of these systems is obviously dependent on properties of mail. This rate therefore varies with percentage of handwritten mail. Although rejection rate for mail sorting may be large, miss rate is usually close to zero.

In the simplest case, gray level or binary images are fed to a recognizer. However, in most of the recognition systems in order to avoid extra complexity and to increase the accuracy of 2 Optical Character Recognition Systems 24 the algorithms, a more compact and characteristic representation is required. For this purpose, a set of features is extracted for each class that helps distinguish it from other classes while remaining invariant to characteristic differences within the class [1, 3]. The character image representation methods are generally categorized into three major groups: (a) global transformation and series expansion (b) statistical representation and (c) geometrical and topological representation.

The first utilizes the possibility of sequences of characters appearing together. This is done by using rules defining syntax of word. For different languages the probabilities of two or more characters appearing together in sequence can be computed and is utilized to detect errors. For example, in English language probability of k appearing after h in a word is zero and if such a combination is detected an error is assumed. Another approach is dictionaries usage which is most efficient error detection and correction method.

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