H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 1/23 (2006.01) H04N 1/387 (2006.01) H04N 1/46 (2006.01)
Patent
CA 2089490
2089490 9222980 PCTABS00018 The method of displaying multitone images beginning with a grayscale original image capable of displaying a specific number of gray levels, which includes the steps of: selecting a plurality of colors from the image, one for each of the multitones, each having a color value; selecting a plurality of transfer functions, one for each of the selected colors; converting each of the shades of gray, using the respective color values and the transfer functions, into a new color value; and displaying the resultant multitone image on a video display terminal using the new color values in place of the shades of gray. The displayed image may be printed using one printing plate for each of the selected colors, and using the same transfer functions to convert the shades of gray to new gray values which are subsequently converted into halftone dots for each printing plate.
Adobe Systems Inc.
Riches Mckenzie & Herbert Llp
LandOfFree
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