| 摘要 |
A method of converting a first set of input color values, such as RGB color values, into a set of device colorants, such as CMY color values, includes the step of providing a look-up table associating a respective, predetermined set of CMY color values with each of a plurality of selected sets of RGB color values. The first set of RGB color values includes a first red color value, a first green color value and a first blue color value. A first random number is added to the first red color value to obtain a randomized red color value. A second random number is added to the first green color value to obtain a randomized green color value. A third random number is added to the first blue color value to obtain a randomized blue color value. Each of the randomized red color value, the randomized green color value and the randomized blue color value are compiled together to obtain a set of randomized RGB color values. A closest one of the selected sets of RGB color values in the look-up table is determined which is closest to the set of randomized RGB color values. The first set of RGB color values is converted into a set of CMY color values that is associated with the closest one of the selected sets of RGB color values in the look-up table. The random numbers which are added to the original RGB values are derived through a deterministic process based on the low order bits of those values. |
