Digital copier that approximates contours of a document image as

Details Digital copier that approximates contours of a document image as Digital copier that approximates contours of a document image as

1994-12-15

1997-10-14

Frahm, Eric

Facsimile and static presentation processing

Facsimile

Recording apparatus

358452, 358453, 382283, H04N 1387, G06K 936

Patent

active

056777710

ABSTRACT:
In a digital copier, a trim mode may be entered on an operating section and a particular area of a document may be marked on a marking device. As an image scanner reads the document image, the resulting image data are written to a memory unit. A data separating section separates characters lying in the marked area of the document, and then a contour separating section separates the contours of the characters. An approximating section determines whether a continuous contour line is straight or curved on the basis of the angle and length thereof and then approximates contour data to a straight line or a curve. As a result, characters are trimmed and processed such that straight lines appear sharp while curves appear smooth. A drawing section writes the approximated contour data in a memory unit and paints the inside of the contour data to thereby draw an output image in the memory unit.

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"Konturorientierte Verfahren in der Digitalen Bildverarbeitung", pp. 35-46 and 56-80, 1989, H. Bassmann, et al.
Fundamentals of Digital Image Processing, pp. 357-362 and 371-374, 1989, A.K. Jain, "Image Analysis and Computer Vision".

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