DCI Specs - Digital Cinema Initiatives

eserved (illegal) code values and these code values will be clipped. For example, codevalues 0 thru 15 will be forced to 15 and code values 4080 thru 4095 will be forced to4080.8.3.4.12. Color GamutIn an additive display, the color gamut is defined by the chromaticity coordinates andluminance values of the three primaries, the white point, and the black point. A projectormay have a larger gamut by placing the primaries anywhere where this minimum gamutis enclosed within the gamut of the projector.8.3.4.13. Color AccuracyWithin the minimum color gamut, all colors shall be accurately reproduced within thetolerances shown in Table 14: Color Accuracy Color Patch Code Values, LuminanceValues, and Chromaticity Coordinates gives a set of colors that can be used to verifythe color accuracy.Input Code Values Output Chromaticity OutputStepCoordinates LuminanceNumberX’ Y’ Z’ x y Y, cd/m²Red-1 2901 2171 100 0.6800 0.3200 10.06Green-1 2417 3493 1222 0.2650 0.6900 34.64Blue-1 2014 1416 3816 0.1500 0.0600 3.31Cyan-1 2911 3618 3890 0.2048 0.3602 37.94Magenta-1 3289 2421 3814 0.3424 0.1544 13.36Yellow-1 3494 3853 1221 0.4248 0.5476 44.69Red-2 2738 2171 1233 0.5980 0.3269 10.06Green-2 2767 3493 2325 0.2884 0.5282 34.64Blue-2 1800 1416 3203 0.1664 0.0891 3.31Cyan-2 3085 3590 3756 0.2409 0.3572 37.19Magenta-2 3062 2421 3497 0.3382 0.1838 13.36Yellow-2 3461 3777 2065 0.3973 0.4989 42.46Table 14: Color Accuracy Color Patch Code Values, Luminance Values, andChromaticity Coordinates 138.3.4.14. Temporal ArtifactsTemporal artifacts, such as flicker and lag on moving highlights, can significantly impairthe quality of a projected image. Although it is difficult to measure and quantify theseparameters, the goal shall be to minimize the visibility of flicker and lag, such that theydo not distract from the presentation.8.3.5. Projected Image TolerancesThe reference image parameters and tolerances for the projected image in mastering roomsand exhibition theaters, as measured off the screen and including the room ambient light,are summarized in Table 11: Reference Image Parameters and Tolerances. Where thenominal parameters are specified as minimums, these parameters shall not be constrainedfrom future improvements as the technology improves.13 The accuracy with which these colors (in the above tables) shall be displayed is shown Table 11: Reference ImageParameters and TolerancesDCI Digital Cinema System Specification v.1.2 Page 87