Importance

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Abstract

An optical character recognition system identifies a font type for an image of a block of text. Key characters matching characters in a pre-defined character set are located in the text block. The image of the text block is partitioned into plural image segments where, for example, each image segment is an image of one line of text. Each image segment is evaluated to determine whether the characters in the image segment have fixed pitch or variable pitch. For each key character in the image segments designated as variable pitch, a determination is made whether a gap exists between a left edge of the key character image and the left border of the key character. A font type is identified for the characters in the image data based on the fixed pitch determinations and the gap determinations.

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First Claim