Filter
Top Products
Long Form of
CID Command
(Configure
Image Data)
In addition to the short form, there is also a long form of the
CID command for each color space. In device-independent
color spaces, the long form can specify primaries other than
the defaults provided by the short form. For example, a
Sony Trinitron RGB primary base can be selected for
Colorimetric RGB instead of the default non-linear SMPTE
RGB primaries.
Device RGB (Long Form)
The long form for the Device RGB color space (value field
18) provides explicit entry of black and white references
(range is –32767 to 32767). Black and white references are
used in the direct pixel encoding modes (2,3) to set relative
limits for raster data; they are also used when specifying
the primary components of new palette entries (?*v#A,
?*v#B, ?*v#C). Black and white references have no effect
on CID default palette colors. The reference values are
specified as 16-bit signed integers (sint16).
Note The short form for the Device RGB color space defaults
each primary’s black reference to 0 and the white reference
to 2
n
–1, where n is the number of bits for that primary.
Byte 15 (msb) 8 7 (lsb) 0 Byte
0 Color space Pixel encoding mode 1
2 Bits per index Bits per primary #1 3
4 Bits per primary #2 Bits per primary #3 5
6 White reference for primary #1 (sint 16) 7
8 White reference for primary #2 (sint 16) 9
10 White reference for primary #3 (sint 16) 11
12 Black reference for primary #1 (sint16) 13
14 Black reference for primary #2 (sint16) 15
16 Black reference for primary #3 (sint16) 17
Using Color Modes 2-17Using Color Modes 2-17