Abstract: A method and apparatus for processing color values in the reproduction of color originals. Color values (R.sub.0, G.sub.0, B.sub.0) are acquired from original pixels (P.sub.0) arranged in an original raster network by pixel-by-pixel and line-by-line, optoelectronic scanning of color originals. For modifying the reproduction scale, an output raster network is generated for output pixels (P.sub.A) to be reproduced and the color values (R.sub.A, G.sub.A, B.sub.A) of the output pixels (P.sub.A) are respectively calculated from the color values (R.sub.0, G.sub.0, B.sub.0) of the original pixels (P.sub.0) within an interpolation window shiftable across the original raster network, being calculated by weighting the color values (R.sub.0, G.sub.0, B.sub.0) with previously calculated weighting coefficients (k.sub.M) for the scale modification and by addition of the weighted color values.

Abstract: A method and an apparatus for processing color values in the reproduction of color originals. Color values (R.sub.0, G.sub.0, B.sub.0) of original pixels (P.sub.0) arranged in an original raster network are acquired by pixel-by-pixel and line-by-line, optoelectronic scanning of color originals. For modifying the reproduction scale, an output raster network is generated for output pixels (P.sub.A) to be reproduced, and the color values (R.sub.A, G.sub.A, B.sub.A) of the output pixels (P.sub.A) are respectively calculated from the color values (R.sub.0, G.sub.0, B.sub.0) of the original pixels (P.sub.0) within an interpolation window that is shiftable across the original raster network, being calculated by weighting the color values (R.sub.0, G.sub.0, B.sub.0) with previously calculated weighting coefficients (k.sub.M) and by addition of the weighted color values. A disturbing color offset arises when the color components of the original pixels (P.sub.0) are sequentially scanned in successive scan lines.