Method and apparatus for the selective filtering of dot-matrix printed characters so as to improve optical character recognition
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United States of America Patent
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Oct 18, 1994
Grant Date -
N/A
app pub date -
Nov 1, 1991
filing date -
Nov 1, 1991
priority date (Note) -
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Abstract
Method and apparatus for locating dot-matrix printed text in a digital image and filtering only those regions determined to contain dot-matrix printed text. The apparatus incorporates a detection algorithm with a digital filter. The system detects dot-matrix printed text and selectively turns the filter on or off within regions of the digital image, thereby improving read rates of dot-matrix printed text while not affecting read rates of higher quality machine printed text.
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