Image analysis – Color image processing
Patent
1995-04-26
1997-12-09
Couso, Jose L.
Image analysis
Color image processing
382167, 358520, G06K 946, H04N 136
Patent
active
056968396
ABSTRACT:
A method for the transformation of color solids of different color reproduction processes in color image reproduction, whereby spatial positions of the colors respectively representable in a color reproduction process are defined by a color solid characteristic of the color reproduction processes in a three-dimensional color coordinate system (L, a, b). First, an initial color solid characteristic of an initial process and a target color solid characteristic of a target process are calculated in the color coordinate system (L, a, b). The initial color solid in the color coordinate system (L, a, b) is then distorted. Subsequently, the distorted initial color solid is transformed into a standardized intermediate color solid in a cylindrical color coordinate system (h, p, q) by a first transformation according to a three-dimensional, first transformation rule (F.sub.1). A second standardized intermediate color solid is produced in the cylindrical color coordinate system (h, p, q) by imaging the first intermediate color solid onto itself according to a second transformation rule (F.sub.2). The standardized intermediate color solid is then back-transformed by a third transformation according to a three-dimensional, third transformation rule (F.sub.3) into a target color solid that is characteristic of a second color reproduction process in the color coordinate system (L, a, b), the transformations each respectively occurring by imaging the color solid.
REFERENCES:
patent: 4670780 (1987-06-01), McManus et al.
patent: 4929978 (1990-05-01), Kanamori et al.
patent: 4941038 (1990-07-01), Walowit
patent: 4959711 (1990-09-01), Hung et al.
patent: 5289295 (1994-02-01), Yumiba et al.
patent: 5311212 (1994-05-01), Beretta
patent: 5317426 (1994-05-01), Hoshino
patent: 5416890 (1995-05-01), Beretta
Bella Matthew C.
Couso Jose L.
Linotype-Hell AG
LandOfFree
Method and apparatus for reproducing an image employing a transf does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for reproducing an image employing a transf, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for reproducing an image employing a transf will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1614339