Hi fellow Kakadu users, I'm hoping for a little guidance on a recipe for adding images to an existing compositor. I'm presenting compositing two jp2 files into...
The following shows two command lines for the kdu_compress utility. When I ask for reversible compression, I get a stream of about 53K for this image and when...
... The first example in documentation/Usage_Examples.txt indicates that - rate 1.0 yields 1 bit per sample. a) kdu_compress -i image.pgm -o out.j2c -rate 1.0 ...
Hi all, I'm new to member and I'm interested in learning on Context Adaptive coding (before doing binary Arithmetic coding). Do you know if kakadu supports...
... that - ... Yes, I'm a newbie, so I don't understand this response. The help screen states that –rate is "One or more bit-rates, expressed in terms of the...
This might be a result of the sample precision. I saw this behavior with 12-bit samples where the data was in the upper 12 bits of a 16-bit word. Do you really...
Joe, Try explicitly setting a base step size for quantization using the syntax Qstep=<float>. The default for kdu_compress of 1/256 works well for 8-bit data...
Which route is preferred for RGB images: Luminance-Chrominance conversion or Multi-component transform and why? It seems the route is somewhat dependent on the...
We are having problems accessing jp2 files that are larger than 4GB (perhaps even 2GB) on the Mac. We either get an error like: Kakadu Core Error: Invalid...
Hi Mike, Thanks for contacting me about this. I believe that this arises for exactly the same reason that TIFF files > 2GB cannot be read on the MAC. If my...
HI Christopher, I'm afraid the object cannot currently support this, although it would not be difficult to add the capability, since it already handles any...
Hi, I have the complete source code for v2.2 which came along with the David Taubman's book. Is it possible to get the latest v5.2.5 source code? if so where...
Hello, I have a big problem because I use kakadusoftware codecs to compress and decompress RAWL Matrix. When I compress I use: kdu_compress -rate 1.375 -i...
... Thanks David - now I know I'll look at seeing if I can somehow integrate the functionality into the compositor. Failing that I can always create multiple...
There are two possible issues: 1) '-rate 1.375' is likely to cause lossy output. Try using '-rate -' instead, and decode without any -rate switch. 2) If the...
we would like to compress jpg files and tiff files and have most of the exif data move to the jp2. there are some tools for this, but it seems complicated. ...
There seems to be a bug in the 'kd_delegator::delegate function' within "connection.cpp". The affected portion is lines 1399 through 1420, where the linked...
Just to close the loop on this...somewhat: Someone mentioned that this really isn't a problem with Kakadu per se, but with the JP2 specification -- that it...
I have written software that allows me to extract and display metadata from a .jp2 file before/without downloading any of the image data, including the...
Hi David, I ran some checks for you on OS X 10.4.9 Intel running i686-apple-darwin8-gcc-4.0.1 Since my current source base uses a memory input buffer I could...
Hi Vilppu, Thanks for this. I am just on the verge of a new release, having fixed all the other reported bugs I am aware of, so it is good to include this...
Hi kevin, There is no bug here. I also have no trouble opening files with these boxes in Adobe Acrobat. "kdu_compress" chooses to write these boxes with a...
Hi Larry, I presume you are referring to JPIP downloads. I don't see a problem with this. You can issue a query with the "metareq" JPIP request field. You...
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