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# Recognition and Definition of Forms by Pseudo Characters

IP.com Disclosure Number: IPCOM000104517D
Original Publication Date: 1993-Apr-01
Included in the Prior Art Database: 2005-Mar-19
Document File: 1 page(s) / 36K

IBM

Ett, AH: AUTHOR

## Abstract

In the processing of data on forms, it is necessary to recognize and be able to specify the nature of the form for further processing. In the current art this is accomplished by the recognition of the patterns of horizontal and vertical lines which comprise the data areas of the form. This is a time consuming and laborious process, with problems resulting from broken lines in the pattern.

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Recognition and Definition of Forms by Pseudo Characters

In the processing of data on forms, it is necessary to
recognize and be able to specify the nature of the form for further
processing.  In the current art this is accomplished by the
recognition of the patterns of horizontal and vertical lines which
comprise the data areas of the form.  This is a time consuming and
laborious process, with problems resulting from broken lines in the
pattern.

This invention provides a different solution which is
considered an improvement over the current art.  A set of nine pseudo
characters formed by the junctions and crossovers of lines comprising
the form are recognized, along with their locations.  The pseudo
characters are formed by the corners where horizontal and vertical
lines meet exactly corresponding to an L, an inverted L and the same
two shapes inverted left to right.  Similarly, the next four pseudo
characters are similar to the T, inverted T, and T rotated 90 degrees
right and left.  The ninth character is the crossover character
represented by the + shape.  Knowledge of these junctions and their
locations is sufficient to fully described all lines on the form, and
therefore the locations where data might be placed.  Simple knowledge
of the total numbers of each psueudo character will, in most
instances, be sufficient to identify a form from within a group of
forms.  See the Figure.

Disclosed Anonymously.