Method for automatic correction of character skew in the acquisi

Details Method for automatic correction of character skew in the acquisi Method for automatic correction of character skew in the acquisi

1985-08-19

1988-02-02

Boudreau, Leo H.

Image analysis

Histogram processing

For setting a threshold

358285, G06K 932

Patent

active

047232978

ABSTRACT:
A method for automatic skewed position correction in acquisition of a text original in the form of digital scan results to be used for further processing. Before their further processing, the scan results are subjected to a skewed position identification in a first step and are subjected to an electronic rotation in a second step. The angle of the skewed position is identified according to a prescribed optimization method by generating a sequence of systematically selected search angles and directional criteria allocated to these search angles, and employing the angle for the electronic rotation. An interval nesting is preferably employed as the optimization method.

REFERENCES:
patent: 3831146 (1974-08-01), Rundle
patent: 4338588 (1982-07-01), Chevillat et al.
patent: 4558461 (1985-12-01), Schlang

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