Image processing method and apparatus which separates an input image into character and non-character areas
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United States of America Patent
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May 18, 1999
Issued Date -
N/A
app pub date -
May 16, 1997
filing date -
Jan 22, 1993
priority date (Note) -
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Abstract
An image processor accurately executes area separation using small block size image data. The image processor includes a wavelet transforming circuit which converts input image data into a plurality of band-limited image data, and an edge detecting circuit detects edge information in the image data based upon the band-limited image data. A character-area detecting circuit detects character areas in the image data from the distribution of the edge information, and an expansion/contraction circuit unifies the character areas based upon the detected character-area information.
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