Method and apparatus for the selective filtering of dot-matrix p

Details Method and apparatus for the selective filtering of dot-matrix p Method and apparatus for the selective filtering of dot-matrix p

1991-11-01

1994-10-18

Moore, David K.

Image analysis

Histogram processing

For setting a threshold

382 48, 382 54, G06K 936

Patent

active

053575814

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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