imgareatlx=x |
Set the x-coordinate of the top-left corner
of the image area to x. |
imgareatly=y |
Set the y-coordinate of the top-left corner
of the image area to y. |
tilegrdtlx=x |
Set the x-coordinate of the top-left corner
of the tiling grid to x. |
tilegrdtly=y |
Set the y-coordinate of the top-left corner
of the tiling grid to y. |
tilewidth=w |
Set the nominal tile width to w. |
tileheight=h |
Set the nominal tile height to h. |
prcwidth=w |
Set the precinct width to w. The argument w must be an
integer power of two. The default value is 32768. |
prcheight=h |
Set the precinct height to h. The argument h must be an
integer power of two. The default value is 32768. |
cblkwidth=w |
Set the nominal code block width to w. The argument
w must be an integer power of two.
The default value is 64. |
cblkheight=h |
Set the nominal code block height to h. The argument
h must be an integer power of two.
The default value is 64. |
mode=m |
Set the coding mode to m. The argument m must have
one of the following values:
Value | Description |
int | integer mode |
real | real mode |
If lossless coding is desired, the integer mode must
be used. By default, the integer mode is employed. The
choice of mode also determines which multicomponent
and wavelet transforms (if any) are employed. |
rate=r |
Specify the target rate. The argument r is a positive
real number. Since a rate of one corresponds
to no compression, one should never need
to explicitly specify a rate greater than one.
By default, the target rate is considered
to be infinite. |
ilyrrates=[, ,. . . , ] |
Specify the rates for any intermediate layers.
The argument to this option is a comma separated
list of N rates. Each rate is a positive real number.
The rates must increase monotonically. The last rate
in the list should be less than or equal to the
overall rate (as specified with the rate option). |
prg=p |
Set the progression order to p. The argument
p must have one of the following values:
Value | Description |
lrcp |
layer-resolution-component-position (LRCP)
progressive (i.e., rate scalable) |
rlcp |
resolution-layer-component-position (RLCP)
progressive (i.e., resolution scalable) |
rpcl |
resolution-position-component-layer (RPCL)
progressive |
pcrl |
position-component-resolution-layer (PCRL)
progressive |
cprl |
component-position-resolution-layer (CPRL)
progressive |
By default, LRCP progressive ordering is employed.
Note that the RPCL and PCRL progressions are not valid
for all possible image geometries.
(See standard for more details.) |
nomct |
Disallow the use of any multicomponent transform. |
numrlvls=n |
Set the number of resolution levels to n. The argument
n must be an integer that is greater than or equal
to one. The default value is 6. |
sop |
Generate SOP marker segments. |
eph |
Generate EPH marker segments. |
lazy |
Enable lazy coding mode (a.k.a. arithmetic coding
bypass). |
termall |
Terminate all coding passes. |
segsym |
Use segmentation symbols. |
vcausal |
Use vertically stripe causal contexts. |
pterm |
Use predictable termination. |
resetprob |
Reset the probability models after each coding pass. |
|
numgbits=n |
Set the number of guard bits to n.'' |