Graphic form input system

Abstract

Abstract PURPOSE:To input an accurate handwritten graphic form by extracting a combination of directions of strokes as a feature, and approximating a stroke as a straight line and an arc on the basis of respective sampling points and features at leading and trailing sampling points. CONSTITUTION:A sampling point extracting means 11 extracts (a) both end points (starting and ending points) of a stroke, (b) horizontal and vertical maximal and minimal points of the stroke, and (c) change points of the direction of the stroke as sampling points from the data sequence of a stroke segmenting means 9. The sampling point of (c) is extracted only when a horizontal or vertical line is present before and behind the sampling point. A feature extracting means 12 extracts a combination of directions of strokes before and after a sampling point as a feature according to a feature table. A stroke approximating means 13 approximates a stroke by a straight line and an arc from respective sampling points and features at leading and trailing sampling points.

Inventors

• 👤 Haruhiko Kojima
• 👤 児島　治彦
• 👤 Toru Toida
• 👤 戸井田　徹

Bibliographic Details