Image analysis – Image segmentation – Distinguishing text from other regions
Patent
1996-12-31
1999-08-24
Rogers, Scott
Image analysis
Image segmentation
Distinguishing text from other regions
382237, 382266, 382270, 358457, 358462, G06K 934, H04N 1403, H04N 1405
Patent
active
059434392
ABSTRACT:
A method and apparatus for separating picture image areas in facsimile machines, scanners, and other picture processing equipment, and more particularly to a method and apparatus for separating picture regions by extracting features of graphic image and characters includes a vertical contouring circuit for producing vertical contour data by combining vertical components of an original picture and binary picture data; a horizontal contouring circuit for producing horizontal contour data from horizontal components of the binary picture data; a logic combiner for combining outputs from the vertical and horizontal contouring circuits and a halftone picture; a mode discriminator for selecting between a binary picture and contouring mode; an image area separator for separating image areas with an output from the logic combiner and a halftone picture, and a counter for executing pixel counting from a halftone picture to determine the probability of the presence of a character.
REFERENCES:
patent: 5644366 (1997-07-01), Ushida et al.
Hyundai Electronics Ind Co. Ltd.
Rogers Scott
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