Real time transformation between color spaces

Claim 1

A method of transforming three independent input vectors representing independent colors and one or more dependent input vectors representing dependent colors, in an original vector space, to three independent vectors in an image vector space, comprising the steps of: (a) resolving each dependent input vector into three independent vector components corresponding with said independent input vectors; (b) combining each independent vector with the corresponding independent vector component of a selected first one of said dependent input vectors according to a predetermined correction model to correct for additivity failure in printing inks to obtain a first output value for each independent color; (c) combining each of said first output values with the corresponding independent vector component of a selected second one of said dependent input vectors according to said correction model to obtain a second output value for each independent color; (d) repeating step (c) until all said dependent vectors are exhausted to obtain a final output value for each independent color to form a reduced set of three independent vectors; and (e) inputting said reduced set of three independent vectors into a three-dimensional look-up table for three-dimensional original vector space input data and containing three-dimensional image vector space output data to obtain the said three independent vectors in the image vector space.

Claim 2

A method of transforming three independent input vectors representing independent colors and one or more dependent input vectors representing dependent colors, in an original vector space, to three independent vectors in an image vector space, comprising the steps of: (a) resolving each dependent input vector into three independent vector components corresponding with said independent input vectors; (b) combining each independent vector with the corresponding independent vector component of a selected first one of said dependent input vectors according to a predetermined correction model to correct for additivity failure in printing inks to obtain a first output value for each independent color; (c) combining each of said first output values with the corresponding independent vector component of a selected second one of said dependent input vectors according to said correction model to obtain a second output value for each independent color; (d) repeating step (c) until all said dependent vectors are exhausted to obtain a final output value for each independent color to form a reduced set of three independent vectors; and (e) inputting said reduced set of three independent vectors into a three-dimensional look-up table for three-dimensional original vector space input data and containing three-dimensional image vector space output data to obtain the said three independent vectors in the image vector space.

Claim 3

A method of transforming three independent input vectors representing independent colors and one or more dependent input vectors representing dependent colors, in an original vector space, to three independent and one or more dependent vectors in an image vector space in real time, comprising the steps of: (a) resolving each dependent input vector into three independent vector components corresponding with said independent input vectors; (b) combining each independent vector with the corresponding independent vector component of a selected first one of said dependent input vectors according to a predetermined correction model to correct for additivity failure in printing inks to obtain a first output value for each independent color; (c) combining each of said first output values with the corresponding independent vector component of a selected second one of said dependent input vectors according to said correction model to obtain a second output value for each independent color; (d) repeating step (c) until all said dependent vectors are exhausted to obtain a final output value for each independent color of an intermediate vector space; and (e) compiling a look-up table ahead of time, for intermediate vector space input data in the form only of independent vectors and containing image vector space output data in the form of independent and dependent vectors; and (f) inputting said intermediate vector space vectors into said look-up table, in real time, to obtain said image vector space vectors.

Claim 4

A method of transforming three independent input vectors representing independent colors and one or more dependent input vectors representing dependent colors, in an original vector space, to three independent and one or more dependent vectors in an image vector space in real time, comprising the steps of: (a) resolving each dependent input vector into three independent vector components corresponding with said independent input vectors; (b) combining each independent vector with the corresponding independent vector component of a selected first one of said dependent input vectors according to a predetermined correction model to correct for additivity failure in printing inks to obtain a first output value for each independent color; (c) combining each of said first output values with the corresponding independent vector component of a selected second one of said dependent input vectors according to said correction model to obtain a second output value for each independent color; (d) repeating step (c) until all said dependent vectors are exhausted to obtain a final output value for each independent color of an intermediate vector space; and (e) compiling a look-up table ahead of time, for intermediate vector space input data in the form only of independent vectors and containing image vector space output data in the form of independent and dependent vectors; and (f) inputting said intermediate vector space vectors into said look-up table, in real time, to obtain said image vector space vectors.