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The Computer Journal 1961 4(2):121-128; doi:10.1093/comjnl/4.2.121
© 1961 by British Computer Society
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A New Technique in Automatic Character Recognition

M. B. Clowes and J. R. Parks

Autonomics Division, National Physical Laboratory, Teddington, UK

This paper describes a new method for identifying a character, which overcomes certain fundamental problems arising with existing techniques. The method involves the evaluation of an autocorrelation function of the character to be recognized. This function contains maxima corresponding to straight lines in the character, and is essentially unchanged by changes in the position and orientation of the character. Variations in the size and aspect ratio of the character also leave the function sensibly constant.


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