OK, I have worked out a similar concoction of the kakadu lossy &
kakadu lossless commands. These commands were derived for working best
in the iipviewer and djatoka, they aren't thoroughly tested and only
minimal comparisons have been done, but they both perform well in our
viewers. Any feedback or refinement is appreciated.
kakadu lossy:
kdu_compress -i input.tif -o output.jp2 -rate 0.5 Clayers=1 Clevels=7
"Cprecincts={256,256},{256,256},{256,256},{128,128},{128,128},{64,64},{64,64},{32,32},{16,16}"
"Corder=RPCL" "ORGgen_plt=yes" "ORGtparts=R" "Cblk={64,64}"
Cuse_sop=yes
imagemagick lossy:
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
kakadu lossless:
kdu_compress -i YOURINPUT.pgm -o YOUROUTPUT.jp2 -rate
1,0.84,0.7,0.6,0.5,0.4,0.35,0.3,0.25,0.21,0.18,0.15,0.125,0.1,0.088,0.075,0.0625,0.05,0.04419,0.03716,0.03125,0.025,0.0221,0.01858,0.015625
Clevels=6 Stiles={1024,1024} Cmodes={BYPASS} Corder=RLCP
imagemagick lossless:
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=0.015625,0.01858,0.0221,0.025,0.03125,0.03716,0.04419,0.05,0.0625,0.075,0.088,0.1,0.125,0.15,0.18,0.21,0.25,0.3,0.35,0.4,0.5,0.6,0.7,0.84
-define jp2:mode=int output.jp2
On Tue, Jun 14, 2011 at 4:26 PM, Kris Bulman <kgbul...@upei.ca> wrote:
>
> I have tried this:
> convert Picture_287.jpg -define jp2:tilewidth=1024 -define
> jp2:tileheight=1024 -define jp2:numrlvls=6 -define jp2:rate=1 -define
> jp2:ilyrrates=r1[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:prg=rpcl Picture_287-imgmgklevls6.jp2
> but get
> warning: empty layer generated
> warning: empty layer generated
> warning: empty layer generated
> warning: empty layer generated
> warning: empty layer generated
> warning: empty layer generated
> warning: empty layer generated
> warning: empty layer generated
> warning: empty layer generated
>
> On Tue, Jun 14, 2011 at 3:48 PM, Kris Bulman <kgbul...@upei.ca> wrote:
>>
>> Hi all,
>> We use a set of kakadu switches that work well for jpeg2000 viewing using
>> our Djatoka/OpenLayers viewer.
>> The lossy jpeg2000 conversion line using kdu_compress is as follows:
>>>
>>> kdu_compress -i input.tif -o output.jp2 -rate 0.5 Clayers=1 Clevels=7
>>> "Cprecincts={256,256},{256,256},{256,256},{128,128},{128,128},{64,64},{64,64},{32,32},{16,16}"
>>> "Corder=RPCL" "ORGgen_plt=yes" "ORGtparts=R" "Cblk={64,64}" Cuse_sop=yes
>>
>> This was from a recommendation for IIPViewer found
>> here: http://help.oldmapsonline.org/jpeg2000/
>> We're looking for an equivalent set of parameters using imagemagick, but the
>> command options don't all seem to line up. The available encoding options
>> are located here:http://www.imagemagick.org/script/jp2.php
>> Any help or input from someone with experience would be appreciated.
>> Thanks,
>> Kris Bulman
>> Digitization, UPEI
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