Manages the information associated with JPEG2000
CRG (component registration) marker segment. Only one
instance appears in a single code-stream; tile-specific
and component-specific forms are not allowed.
The cluster name is "CRG", but you are recommended
to use the macro
CRG_params, in functions which take a cluster name like
kdu_params::access_cluster.
The following attributes are defined. For an explanation
of pattern strings, consult the comments appearing
with
kdu_params::parse_string.
-
Macro =
CRGoffset; Pattern = "FF", [MULTI_RECORD, CAN_EXTRAPOLATE] —
Provides additional component registration offsets.
The offsets add to those implied by the canvas coordinate
system and should only be used when canvas coordinates
(notably
Ssize,
Soffset and
Ssampling) cannot be found, which adequately reflect the relative
displacement of the components. Each record specifies
offsets for one component, with the vertical "offset
appearing first. Offsets must be in the range 0 (inclusive)
to 1 (exclusive) and represent a fraction of the relevant
component sub-sampling factor (see
Ssampling). The last supplied record is repeated as needed to
recover offsets for all components.
crg_params {Java: Crg_params}