Image analysis – Histogram processing – For setting a threshold
Patent
1991-11-19
1994-01-04
Mancuso, Joseph
Image analysis
Histogram processing
For setting a threshold
395137, 345126, G06K 932, G09G 106
Patent
active
052767426
ABSTRACT:
A method of apparatus for automatic page orientation of a scanned image which compares the number of character ascending pixels to the number of character descending pixels in the image to determine if the image is properly aligned or is 90.degree. or 180.degree. out of orientation. The method and apparatus includes morphologically processing the bitmap of the scanned image using structuring elements for isolating the character ascenders and descenders. When page orientation is improper, the bitmap image of the scanned image is rotated to correct the misalignment.
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Bloomberg Dan S.
Dasari Lakshmi
Fox David
Mancuso Joseph
Xerox Corporation
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