X-Git-Url: https://granicus.if.org/sourcecode?a=blobdiff_plain;f=www%2Fjp2.html;h=9922ff8b78a9b0e95867d846062f4edbd23ad46c;hb=eac380debee35c5039d0f14e6af43453e012059f;hp=04030b5594c00592c2158be027fcbf6b6336e4a6;hpb=eed6cb663d33342848fce694ad45fe2db637547f;p=imagemagick diff --git a/www/jp2.html b/www/jp2.html index 04030b559..9922ff8b7 100644 --- a/www/jp2.html +++ b/www/jp2.html @@ -1,246 +1,179 @@ - - - - - - + + + + + ImageMagick: JP2 Encoding Options - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
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ImageMagick JPEG-2000 Image Format

@@ -255,24 +188,24 @@

Use this command:

-

$ convert wizard.png -define jp2:cblkwidth=64 -define jp2:cblkheight=32 \
+

$ convert wizard.png -define jp2:cblkwidth=64 -define jp2:cblkheight=32 \

-define jp2:nomct -define jp2:numrlvls=4 -define jp2:rate=0.015625 wizard.jpc

Here we convert a giga-byte TIFF image to JPEG-2000 with a reduced memory footprint:

-

$ convert frame-00038.tif -define jp2:tilewidth=256 -define jp2:tileheight=256 frame-00038.jp2

+

$ convert frame-00038.tif -define jp2:tilewidth=256 -define jp2:tileheight=256 frame-00038.jp2

Here is a lossy example using the full gamut of JP2 options:

-

$ convert input.tif -define numrlvls=7 -define jp2:tilewidth=1024 --define jp2:tileheight=1024 \
-define jp2:rate=0.02348 -define -jp2:prg=rpcl -define jp2:mode=int -define jp2:prcwidth=16383 \
-define +

$ convert input.tif -define numrlvls=7 -define jp2:tilewidth=1024 +-define jp2:tileheight=1024 \

-define jp2:rate=0.02348 -define +jp2:prg=rpcl -define jp2:mode=int -define jp2:prcwidth=16383 \

-define jp2:prcheight=16383 -define jp2:cblkwidth=64 -define jp2:cblkheight=64 -define jp2:sop output.jp2

Here is the same example with lossless encoding:

-

$ convert input.tif -define numrlvls=6 -define jp2:tilewidth=1024 --define jp2:tileheight=1024 \
-define jp2:rate=1.0 -define jp2:lazy --define jp2:prg=rlcp -define jp2:ilyrrates=\
'0.015625,0.01858,0.0221,0.025,0.03125,0.03716,0.04419,0.05,0.0625, +

$ convert input.tif -define jp2:numrlvls=6 -define jp2:tilewidth=1024 +-define jp2:tileheight=1024 \

-define jp2:rate=1.0 -define jp2:lazy +-define jp2:prg=rlcp -define jp2:ilyrrates=\

'0.015625,0.01858,0.0221,0.025,0.03125,0.03716,0.04419,0.05,0.0625, 0.075,0.088,0.1,0.125,0.15,0.18,0.21,0.25,0.3,0.35,0.4,0.5,0.6,0.7,0.84' -\
-define jp2:mode=int output.jp2

+\

-define jp2:mode=int output.jp2

Here is a complete list of JPEG-2000 encoding options:

@@ -360,32 +293,24 @@ jp2:prcheight=16383 -define jp2:cblkwidth=64 -define jp2:cblkheight=64
numgbits=n
Set the number of guard bits to n.
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