H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 1/387 (2006.01) G06F 17/15 (2006.01) G06T 5/20 (2006.01) H04N 1/52 (2006.01) H04N 1/60 (2006.01)
Patent
CA 2035658
12045abs I-9008 9jan91 ABSTRACT There is disclosed technique and apparatus for calibrating a color processing device. The technique includes the steps of comparing a first digital representation of a colored image with a second digital representation thereof and employing at least the transformation to control operation of the color processing device to be calibrated. The first digital representation defines a plurality of first non-scalar color values and the second digital representation defines a plurality of second non-scalar color values corresponding to the plurality of the first non-scalar color values, thereby to provide a transformation pairing each individual one of the first non- scalar color values with a value relatively close to the corresponding one of the second non-scalar color values. The color processing device may be calibrated generally without reference to human aesthetic judgement. There is additionally provided a method and apparatus for transforming an element of a domain of a first color printing device to an element of a domain of a second color printing device. The method comprises the steps of providing a first transformation from a first digital representation of a colored image to a second digital representation thereof and a second transformation from a third digital representation of a colored image to a fourth digital representation thereof and comparing the first transformation with the second transformation. The second transformation corresponds to the second color printing device. the first transformation corresponds to the first color printing device and the second and fourth digital representations are defined within a single color space.
Bresler Yoav
Kreitman Haim
Litvak Matty J.
Melman Haim Zvi
Smilansky Ze'ev
Mccarthy Tetrault Llp
Scitex Corporation Ltd.
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