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OPTICAL CHARACTER RECOGNITION TECHNIQUES IN MAIL SORTING: A REVIEW OF ALGORITHMS

A study of Optical Character Recognition (OCR) techniques employed in automatic mail sorting equipment is presented. Methods and algorithms for image preprocessing, character recognition, and contextual postprocessing are discussed and compared. The objective of the study is to provide a background in the state-of-the-art of this equipment as the first element in a search for techniques to significantly improve the capabilities of postal address recognition.