Hi, We are thinking of doing some open source development with kakadu for example as per GDAL http://trac.osgeo.org/gdal/browser/trunk/gdal/frmts/jp2kak we...
Norman Barker
nbarker@...
Oct 1, 2008 12:53 pm
5492
That is not a valid JPEG2000 file. All .jp2 files must begin with a JPEG2000 Signature Box. The first value in this box is the length of the box in bytes,...
Hi Mathieu, Your image contains one color component. The flag to enabe a color transform on 3 color components is set in the COD marker. (YCC is byte[6] in the...
Neither of them are valid (not as a JP2 file, not as a codestream) I'm afraid. Cheers, David ... From: "Mathieu Malaterre" <mathieu.malaterre@...> To:...
Sorry I forgot to mentioned (if this helps). This file is supposed to be 1024x200 image, grayscale, signed 8 bits On Thu, Oct 2, 2008 at 4:49 PM, Mathieu...
I'm trying to compress a single image using the "-frag" option. This image is 640x480, with a tile size of 320x480 - giving 4 tiles. My thought was it would...
Hi.. I need to compress some pre-scan converted ultrasound data that is in polar coordinates. Can anyone suggest references that I should dig into? Currently...
There was a typo in the previous post...the tile size is 240x320, not 320x480. Does anyone know why the upper left image tile is shown in each fragment of the...
Adobe says it may drop its support for JPEG2000 in Photoshop, because of a lack of interest in JPEG2000. Adobe asks JPEG 2000: Do you use it? We have not seen...
The response to Adobe's request for input from the JPEG2000 community was under-welling. Adobe announced Photoshop CS4 on 23 Sep 2008. There is no mention of...
Hi everyone, The Photoshop JPEG 2000 plug-in remains an optional plug-in in the CS 4 release and no changes to that status are planned at this time. Thanks for...
Scott Foshee
sfoshee@...
Oct 7, 2008 3:12 pm
5503
Anyone know how to compress only a fragment of an image? e.g. wan image with four tiles. Run kdu_compress four times to.. Run #1: compress upper left tile of...
You need 4 different input images, one for each tile. (See the -frag usage statement: "The input image(s) supplied via '-i' describe only the fragment being...
Hello. I will greatly appreciate it if you could help me build a basic JPEG2000 dll(using visual C++ 6.0) using Kakadu library.(I've boutght a noncommercial...
I've been experiencing a random yet frequent problem when using the Kakadu JPIP client, kdu_client: my program gets in a seemingly endless loop in a call to...
Update. A little more investigation and it looks like I'm even failing to get Kakadu to read meta-data bin zero for the third file I access through ...
Scott, I have encountered this problem as well, though only on the linux/mac version of the server. The windows version seems to work fine for me. If you...
Ben, Thanks for your response. I am running the kdu_server on Linux. It's certainly useful to know that others have experienced the same problem. After...
(For what it's worth, we've noticed a number of stability issues with the JPIP server. In Dr. Taubman's defense, though, it is a demo app and explicitly not...
Scott, Unfortunatly I did not find a solution other than using a windows server. I know that the organization I worked for sent the code to a systems...
Ben. Thanks for the information. I've repeated my tests with the Windows version of the kdu_server - no problems found. So it is, as you suggested, a problem...
Dear Dr, Taubman, We are using the Kakadu toolkit for a couple of years now. We have a few questions regarding the performance of the region decompressor. We...
HI Lokesh, I agree that this is a disappointing performance. In general, my observation is that Kakadu does not fully utilize more than about 3 cores without ...
Dear Jan, Sorry for the long delays in my responses to your questions. I am slowly getting to my large backlog of emails. As for this question, the most...
HI Jan, There is no completely reliable way to obtain the compressed size associated with quality layers in JPEG2000. By the time all the layers have been...
Hi Jan, Again, your question relates to something which is not really in the scope of Kakadu. This is a problem that any waveform-based coder, like JPEG2000,...
Hi Jan, The Unix port of kdu_server was done by a 3'rd party. I am planning to replace it with a single platform neutral implementation of the original...
Thanks David, I received the following response from the engineer who posted this issue. I hope you can respond to this. -Jan- I think he is approaching the...
Dear Jan, I understand. Right now, there is no such mechanism, for the reasons outlined previously. However, there could be a mechanism to conservatively...
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