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Guidelines for Handprinting

IP.com Disclosure Number: IPCOM000074441D
Original Publication Date: 1971-Apr-01
Included in the Prior Art Database: 2005-Feb-23
Document File: 2 page(s) / 25K

Publishing Venue

IBM

Related People

Hamburgen, A: AUTHOR

Abstract

In the recognition of alphanumeric handprinted characters by machine, it is almost obligatory that the documents for receiving such characters contain preprinted guidelines for constraining their size. Rectangular boxes and other convention forms of guidelines, however, permit large variations in the size of characters to be read. Size normalization is then required at considerable cost and loss of throughput.

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Guidelines for Handprinting

In the recognition of alphanumeric handprinted characters by machine, it is almost obligatory that the documents for receiving such characters contain preprinted guidelines for constraining their size. Rectangular boxes and other convention forms of guidelines, however, permit large variations in the size of characters to be read. Size normalization is then required at considerable cost and loss of throughput.

To solve this problem, guidelines 10 are preprinted in the form of railroad tracks with cross ties. The document user is instructed to write his characters 11 on the tracks 12, but not on the ties 13. Tracks 12 and ties 13 are preprinted in an ink which is visible to the writer, but invisible to the scanner. Alternatively, ties 13 may be made visible to the scanner as well, in order to provide horizontal timing or normalizing marks to the recognition circuits. Although tracks 12 and ties 13 are shown as open lines, either or both of these boundaries may be single, solid lines.

Guidelines 20 have a configuration for receiving characters 21 which may have diacritical marks 22 associated therewith. In this case, tracks 23 and cross ties 24, corresponding to the boundaries 12 and 13 of guidelines 10, form a row of large central areas for containing the major characters 21. In addition, a third track 25 intersects extensions of the ties 24 to form a row of smaller auxiliary areas for containing diacritical marks 22. A fourth rail, not...