DCI Specs - Digital Cinema Initiatives

uniformity or non- monotonic luminance steps in the test pattern. The black-to-white graystep-scale test pattern shall be centered on the screen and occupy a rectangle sized20% of the screen height by 80% of the screen width. The background shall be definedby code values [1565 1633 1604], which define a luminance of 4.80 cd/m 2 andchromaticity coordinates x = 0.3140 y= 0.3510. Each step shall be 8% of the screenwidth and shall be defined by the code values in Table 12: Black-to-White Gray Step-Scale Test Pattern Code Values, Luminance Values, and Chromaticity CoordinatesInput Code ValuesOutput ChromaticityCoordinatesX’ Y’ Z’ x y Y1 379 396 389 0.3140 0.3510 0.122 759 792 778 0.3140 0.3510 0.733 1138 1188 1167 0.3140 0.3510 2.104 1518 1584 1556 0.3140 0.3510 4.435 1897 1980 1945 0.3140 0.3510 7.926 2276 2376 2334 0.3140 0.3510 12.727 2656 2772 2723 0.3140 0.3510 18.998 3035 3168 3112 0.3140 0.3510 26.879 3415 3564 3501 0.3140 0.3510 36.5010 3794 3960 3890 0.3140 0.3510 48.00StepNumberOutputLuminanceTable 12: Black-to-White Gray Step-Scale Test Pattern Code Values, LuminanceValues, and Chromaticity CoordinatesUsing the second black-to-dark gray step-scale test pattern described in Table 13:Black-to-Dark Gray Step-Scale Test Pattern Code Values, Luminance Values, andChromaticity Coordinates, the entire step-scale should appear neutral without any visiblecolor non-uniformity or non- monotonic luminance steps in the test pattern. The black-todarkgray step-scale test pattern shall be centered on the screen and occupy a rectanglesized 20% of the screen height by 80% of the screen width. The background shall bedefined by code values [122 128 125], which define a luminance of 0.0064 cd/m 2 andchromaticity coordinates x = 0.3140 y= 0.3510. Each step shall be 8% of the screenwidth and shall be defined by the code values in Table 13: Black-to-Dark Gray Step-Scale Test Pattern Code Values, Luminance Values, and Chromaticity CoordinatesDCI Digital Cinema System Specification v.1.2 Page 85