FIELD: printing.
SUBSTANCE: invention relates to means of copying text documents. In the method the printed document is scanned, the scanned image is obtained, the connected regions of symbols are identified, the typical colours for groups of connected regions of symbols are determined, the contours of these regions are approximated using the sequences of line segments and curve segments, the rasterisation of the approximated contours is carried out with filling of their inner area by the respective typical colours, the modified image is printed.
EFFECT: reduction of the degree of text degradation in multiple copying of printed document.
8 cl, 11 dwg
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