Image analysis – Color image processing – Color correction
Patent
1994-05-18
1996-09-03
Boudreau, Leo
Image analysis
Color image processing
Color correction
382100, 358504, 101DIG29, G06K 900, H04N 154
Patent
active
055531610
ABSTRACT:
In a process for creating a data base for the reproduction of a copy on a web of material, primary colors are first applied on a sample of the web of material singly, in pairs, or three together in different quantitative proportions of color (a1, a2, a3) in respectively predetermine screen areas (16). Then, the individual screen areas (16) are colorimetrically measured in order to determine color correction values dependent on the quantitative proportions of color (a1, a2, a3). Thereafter, a dot-by-dot colorimetric measurement of the copy takes place in order to obtain, in each case, color values of the copy. The color values are then corrected by the color correction values in order to obtain corrected quantitative proportions of color for each dot of the copy. These corrected quantitative proportions of color are stored and can be used at a later point in time in order to define, for example, hole sizes in the screen printing stencils for reproduction of the copy.
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Boudreau Leo
Johns Andrew W.
Schablonentechnik Kufstein Aktiengesellschaft
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