Igor R.
Senior Member
New Photoshop plug-in for Windows became available couple weeks ago from AlgoVision http://www.algovision-luratech.com/download/index.jsp?OnlineShopId=132751028015864856
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JPEG 2000 compression
- Thread starter Igor R.
- Start date
David Barkin
Senior Member
Hi Igor
Either you're going to have to translate this article into English for non German speakers (i.e. - me) or you're going to have to tell us what this plug-in does so that we can comment.
Dave
Either you're going to have to translate this article into English for non German speakers (i.e. - me) or you're going to have to tell us what this plug-in does so that we can comment.
Dave
JonathanF
Senior Member
Try the English site http://www/luratech.com/ . I have been using the plug-in for read only since last year, but I cannot bring myself to pay $79 dollars for what is clearly a transitional solution until all software natively support jp2. You can get a full function jp2 plug-in for IrfanView for $19.
JonathanF
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JonathanF
Igor R.
Senior Member
1. There is a Eng version of this website
2. Photoshop plug-in is a free demo, so you can just download it and see, what it does. Basically, it opens and saves images from Photoshop to .jp2 image format.
Igor R.
Senior Member
Khm, http://www.luratech.de/
Ye, expired version can oly read files. BTW, you gotta download new version (its just 2 weeks old) and it will be alive again for a month.
Ye, it is implementation of Part 1 only, no ICC support
well, maybe we gonna see native JP2 support in Photoshop 7.5
Ye, it does the same cuz it is based on JP2 SDK.
MarcV
Senior Member
You can reactivate the write function in the demo version by simply erasing all entries that refer to lura in the system registry. Simple as that!
Khm, http://www.luratech.de/
Ye, expired version can oly read files. BTW, you gotta download new
version (its just 2 weeks old) and it will be alive again for a
month.
Ye, it is implementation of Part 1 only, no ICC support
well, maybe we gonna see native JP2 support in Photoshop 7.5
Ye, it does the same cuz it is based on JP2 SDK.
Jim DeLuco
Senior Member
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I noticed this option in my Thumbs Plus software. In a nutshell can someone tell me what jp2000 gets you, over straight jpg?
Jim DeLuco
DeLuco Photography
http://www.delucophoto.com
Merle Sebzda
Well-known member
Roliaz replied:
Image compression according to the JPEG2000 standard facilitates considerably higher compression rates than the old JPEG scheme and a higher image quality at the same compression rate.
see more...
http://www.luratech.com
theswede #100093
Senior Member
In addition it requires that all software handling JPEG2000 images license patented technology and pays license fees. JPEG has no such encumberance.
There will be no legal free (as in speech) versions of JPEG2000 compliant software. The licensing terms do not allow it.
In other words, don't use it. It's a dead end.
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Jesper
Merle Sebzda
Well-known member
Roliaz repled:
Forgent Networks (formally known as VTEL) has posted a press release stating their claim to JPEG and their intention to pursue licensing revenue from companies who use it.
David Barkin
Senior Member
Hi Roliazz
Fogents claim is being contested. The issue is far from clear at this point. I'm not even sure if JPEG 2000 is "JPEG." Its certainly not compatible. They probably picked that name because of the format name recognition (I'll be happy to be corrected on this last point).
Certainly for the moment you will have no one to give these files to, simply because very few users use this format.
Dave
Fogents claim is being contested. The issue is far from clear at this point. I'm not even sure if JPEG 2000 is "JPEG." Its certainly not compatible. They probably picked that name because of the format name recognition (I'll be happy to be corrected on this last point).
Certainly for the moment you will have no one to give these files to, simply because very few users use this format.
Dave
theswede #100093
Senior Member
I know they've stated that, and have received a fair amount of money from another company that is big on sustaining the fallacy of content ownership, but there's little indication they'll be able to pursue the whole deal very far.
There is already plenty of JPEG capable software, both in the public domain, under GPL and under BSD style license, that will not be revoked; if for no other reason than that the patent in question will soon expire.
JPEG2000 on the other hand has no available open implementations and are unlikely to get any as the standard is locked in patents from the outset.
It's not an open standard, it's a proprietary locked in standard. That means any pictures you have in this format are at the mercy of the licensing agency. If you want to bet the future of your images to the whims of a profit hungry organization, be my guest.
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Jesper
I've tested the JP2 format using LuraWave's "smart compress". The "lite" version is free.
JP2 is a completely different format than JPG. They are completly non-compatible.
The two most important aspects of the JP2 format are that the format is capable of losslessly recording an image, and that the the JP2 files are trunkatable. Trunkability has some important benifits/ramifactions. First, let me explain what I mean when I say "the file is trunkatable".
Normal data files (text, image, spreadsheet, music, etc.) contain serial data. For example, if you have a text file containing the 10 commandments, the first part of the file would contain the first commandment and the last part of the file would contain the last. If you cut off the second half of the file, you'd have the first 5 commandments. The same is true of most data files. If you corrupt the file by chopping off the end, you can still recover data from before the chop, but the data that came after the chop is unrecoverable. JP2 files are different. The JP2 file can have it's end chopped off at will. When the remaining fragment is decoded, it will still generate the whole image, although with a loss of detail. As a practical matter, this can be done by opening a JP2 file in a text editor, highlighting the second half of the document, deleting this data, then resave the file. When you open the truncated file in a JP2 reader, the whole image will still display.
The following are consequenses of trunkability.
1) The size of the compressed file can be controlled by the user
2) The % compression can be controlled by the user
3) For internet applications, users can download only as much detail as they need
4) If you want to view a large file at a smaller size, rather than creating an additional small file, the user would just use less of the file and view it smaller. For example, rather than creating and storing "small", "medium" and "large" files from the "original" files (like pbase does), you would serve a portion of the leading data in the "original" file along with a tag to indicate the size at which it should be displayed.
I have no idea if this format will become commonplace, and I don't choose to express an opinion regarding the relative merits of distributing the format widely versus managing the format with restrictive patents. However, the file format is/would be useful in digital still-camera applications.
1 downside to this format is that it requires much more processing time to encode and decode than JPG or Bitmap files.
A digital camera that used this format would have an option that would allow you to always take 1 more picture...you'd never be "out of space". I'll explain. Suppose you've taken 50 2000x1500 images and have stored them losslessly at 3 MB/ file on your 150 MB compact flash card. You could then take the 51st shot and cut off the trailing 50 kb off of each picture and save the new pic as a 2.5 MB file with the freed space. The difference in quality between a 3,000,000 byte JP2 file and a 2,950,000 byte JP2 file is insignificant. In fact, you won't see the first hints of compression artifacts until the file is down to about 1.5 MB...and they won't be noticable when viewed at 100% until the file is about 500 kb (all this info is regarding a 1500 x 2000 pixel file) You could keep stuffing more and more pictures into the camera as long as you wanted. If the images were to become degraded so that compression artifacts were visible at full size, they could be viewed smaller (say 1600 x 1200) with no artifacts.
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http://www.pbase.com/mango
Igor R.
Senior Member
Gonna try, thanx for advice!
Igor R.
Senior Member
No, web browser plugins are FREE!!!
No, it is the future!
theswede #100093
Senior Member
Can you direct me to the source code that I can use in my own GPL'd programs then, please?
Even just source for a Linux plugin that works in Mozilla and Opera would be a start, as long as it's not locked licensed.
That's why I see everyone rushing to adopt it, I take it?
It's a proprietary money making scheme, and as such a dead end.
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Jesper
MarcV
Senior Member
A great free tool that lets you see the difference between ordinary JPEG and JPEG2000 can be downloaded here:
http://www.aware.com/products/compression/j2k_download.html
http://www.aware.com/products/compression/j2k_download.html
MarcV
Senior Member
It appears that the version that is currently available on Aware's web site has a limitation on the image size. I still have an older version of the program available that has no such limitation. You can get it here:
MarcV
Senior Member
The link apparently doesn't show up in previous message. You can make it show up when opening that message and then click on reply.
pazooter
Active member
The plug-in may be free, but as a webmaster for many websites, I would NEVER include a jp2 file in a webpage. It is just not a commonly accepted format.
Now, if lauraSoft could make the coup of getting Microsoft to include jp2 compatiblity in their standard web browser (which would likely mean selling the patent to the devil), I would indeed consider using it. Jp2 is a wonderful format; much better than jpg! Unfortunately it is destined to remain mostly unknown and unused (even if known about) as long as the legal owner continues to clutch it so tightly to his chest with dollar signs in his eyes.
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