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B-16 Using Color Modes (Color LaserJet, 5, 5M, DeskJet) EN
• Luminance-Chrominance (YUV) ?*v6W[0x04, . . . ]
YUV, which is a linear transformation from SMPTE RGB, is the default
Luminance-Chrominance color space. The short form allows the
following ranges:
Y = 0.0 to 1.0
U = –0.89 to 0.89
V = –0.70 to 0.70
Note Luminance-Chrominance color space support is at HP Color LaserJet
level for HP Color LaserJet 5 and 5M printers.
Data Range Scaling
White and black references define the encoding range for
device-dependent color spaces. However, device-independent color
spaces require input data pre-scaled to the range 0 to 255. For
example, to use the short form for the default YUV color space, the
input data must have the following ranges:
Y = 0.0 to 1.0
U = –0.89 to 0.89
V = –0.70 to 0.70
The user must linearly scale (y = mx b) the input data to the
range0–255:
Y = 0 (0.0) to 255 (1.0)
U = 0 (–0.89) to 255 (0.89)
V = 0 (–0.70) to 255 (0.70)