Method of shape recognition using postulated lines

Details Method of shape recognition using postulated lines Method of shape recognition using postulated lines

2004-03-30

2008-08-26

Le, Brian (Department: 2624)

Image analysis

Pattern recognition

On-line recognition of handwritten characters

C382S186000, C382S188000, C382S189000

Reexamination Certificate

active

07418136

ABSTRACT:
A method for recognizing shapes is disclosed. A computer, such as a handheld computer with pen input, is used to receive a drawing from a user. The user's drawing is then analyzed to identify the location of potential vertices of angles or knots of splines using a technique of hypothesizing lines between known important points and calculating the distance between other points and that Postulated line. This process is repeated until all important points are located. Also disclosed is a method for determining whether a set of points is straight or curved.

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Joaquim A. Jorge & Manuel J. Fonseca, “A Simple Approach to Recognise Geometric Shapes Interactively,” Departamento de Engenharia Informática, IST/UTL, Av. Rovisco Pais, 1049-001 Lisboa, Portugal.

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