Method and apparatus for identification and correction of docume

Details Method and apparatus for identification and correction of docume Method and apparatus for identification and correction of docume

1989-12-08

1993-02-16

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

382 18, 382 51, 340727, 395137, G06K 932, G06K 938, G06K 946, G09G 106

Patent

active

051877538

ABSTRACT:
A method and apparatus for identifying and correcting for document skew. Lines of a bitmap are scanned and a variance in the number of ON pixels as a function of skew angle is calculated. Skew of the original document occurs when the variance is a maximum. Once the skew has been identified, the document is deskewed accordingly.

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