The only reason you cannot do this with "kdu_compress" is that the TIFF reader in "kdu_compress" is there ONLY FOR DEMONSTRATION PURPOSES. It only reads...
In Kakadu version 5.1, there is code related to writing a JPEG2000 resolution box, in 1 - apps/image/image_in.cpp, in the tif_in::tif_in section, around line...
A PDF was brought to my attention with the topic `Compression of 3- Dimensional Medical Image Data Using Part 2 of JPEG 2000` by Alexis Tzannes, Ph.D. (Nov....
I believe I have found the problem. In kdu_tiff.cpp lines 699-702 is code which flips pairs of 32-bit words if data type has 8 bytes, which is done if the...
Hi, Scalability in resolution is a typical feature of JPEG2000. The primary objective is compression with added features. The second image seems to be of lower...
Sorry, I made a slight typo in original reply. Should obviously be '==' instead of '=' in comparison, which I changed below also. ... section, ... box, ... ...
... Hash: SHA1 Can anyone offer the magic incantations to get the JNI version of Kakadu to compile and run? What I've got is: cd kakadu/java/kdu_jni javac * ...
Peter Murray
peter@...
May 5, 2006 3:31 am
3931
HI Mike, Unfortunately, JPEG2000 is not well adapted to limiting the maximum error in any pixel. This is something that is best achieved by direct ...
Hi Fabrice, I understand your problem. Indeed the 9/7 kernel has a better low-pass filter than the 5/3, which is why you prefer the low resolution images you...
Hi, I have finally managed to get kdu_show working with a different server to kdu_server for metadata requests. There are a few odd things with bin ids and...
Hi Jason, It is a bit difficult for me to provide too much concrete advice, based solely on what you sent me. Firstly, one thing which is a bit strange is that...
Thank you very much for your prompt response. I have two quick questions for you: 1) In my prior message, I referenced a paper on using 3D DWT's. Is there any...
Hi Sammy, This should not happen. Can you send me a copy of your file to d.taubman@... -- I will fix it. Meanwhile, can you check that everything runs...
Looks like perhaps you did not include the right timing information when you compressed it (or no timing information at all), so that kdu_show picks a default...
The writing process backs up and rewrites only in the case where TLM markers are requested, since tile-lengths cannot be determined until the tiles have been...
I will try to create such an archive in the next week or so. Cheers, David ... From: "webskister" <webskister@...> To: <kakadu_jpeg2000@yahoogroups.com> ...
Hi Tobias, This looks like another one of these big-endian / little-endian type problems. If your 16-bit original files were in little-endian byte order, you...
Hi Sammy, If this is the last tile in the codestream, then of course there can be no problem, since there is no conceptual difference between this and...
Hi Jason, You just need to pass an array of `kdu_long's into `kdu_stripe_compressor::finish' (the array is an optional argument) and the function will write...
Is there any plan to convert the MMX and SSE(2) code to use the __m128/__m128i intrinsics? I'm targeting XP64 and MSVC8 won't even compile inline ASM code, or...
I am sure you have all heard of the IBM/Sony/Toshiba Cell Broadband Engine Processor by now, and how it threatens quantum leaps in processsing power for...
Thank you for writing me! I thought that this would be not that easy so I implemented some kind of fast search algorithm to find the optimal compression rate...
HI Sylvain, Regarding the closing of connections, you should use the JPIP "close" request field, in addition to HTTP close. If you like, take a look (using...
Hi, I work with Kakadu for my university and i have to get the xml's boxes on a JPG2000's file. I can reach the xml's boxes if they are at the firt level of...
Hi Norman, Here is how it works: 1) The original file consists of a sequence of JP2 boxes. 2) The file always corresponds to meta data-bin 0. It is allowable...
I have a multiple component (90 frames) image that I compressed with 12 layers. Is it possible to explicitly access and decompress n layers of component x? If...
Dear Dr. David, I am a student from Nanyang Technological University, Singapore. Previously, I used Kdu version 2.2 and I could compile and run a simple...
... Hello David, Thank you for your answer. I am not an expert concerning the different part of the JP2000 norm, so the following question may sound obvious to...
HI Fabrice, Unfortunately, you are right that Part 2 technologies are optional. My guess is that Adobe's decoder does not currently support arbitrary transform...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
