METHOD AND APPARATUS FOR ORDERING OF OFF-LINE CHARACTER FROM NATURAL SCENE

摘要

PURPOSE: A method and an apparatus for ordering of off-line characters from a natural scene are provided to suggest angular normalization, structural feature position determination, and structural feature numeral string generation methods, thereby highly recognizing off-line characters of various fonts regardless of angles or sizes of the characters. CONSTITUTION: A pre-processor (100) extracts off-line characters from an image, performs binarization of the off-line characters through a predetermined threshold, and performs thinning of the binarized off-line characters to have a fixed thickness. A normalizer (200) normalizes the pre-processed characters into characters corresponding to a predetermined standard. A code allocator (300) allocates chain codes that indicate a progressive direction of each stroke and intersection points that indicate strokes are crossed each other to points constituting the normalized characters. An ordering unit (400) transforms the characters with allocated codes or points into numeralized data using structural features containing end points or intersection points of the characters. [Reference numerals] (100) Pre-processor; (210) End point detecting unit; (220) Text information rotating unit; (300) Code allocator; (410) Structural feature code generating unit; (420) Ordering unit; (500) Modeling unit; (600) Database; (AA) Text information