Born2killx Posted April 18, 2006 Share Posted April 18, 2006 ok i get it, so png is much more exact but has a bigger filesize right? Quote I built my first computer at age 11! Link to comment Share on other sites More sharing options...
aatwo Posted April 18, 2006 Share Posted April 18, 2006 yeh pretty much. Quote Deviant Art Gallery Link to comment Share on other sites More sharing options...
BuzzKill Posted April 18, 2006 Share Posted April 18, 2006 I personally use png for everything because it saves the image perfectly. I use it for photos and everything, not because I hate jpg, but because I am slightly compulsive and I like things to be exact. Nods head in agreement Quote - DO NOT contact me asking for the .pdn of my avatar or the PDN logo. Thank you. Have a nice day. Link to comment Share on other sites More sharing options...
Gumboot Posted April 19, 2006 Author Share Posted April 19, 2006 One thing to note is that JPEG 2000 supports lossless encoding (i.e. "perfect" saves). Just drag the quality slider to 100% when saving. Of course, the file size goes up quite a bit when you do this. Quote Link to comment Share on other sites More sharing options...
aatwo Posted April 19, 2006 Share Posted April 19, 2006 oooh. Something to note.... I just saved the same file as a .png and a .jp2 A nice and big (1024x768) colourful image to really test them. Here's the image I used. http://www.aatwo.com/images/gallery/tes ... 24x768.png The results were very interesting! Png - 1700 KB (1.66 MB) Jp2 - 925 KB It looks like Jp2 beats png hands down... shame its not supported by anything. Why isn't this more popular? I am suprised that firefox does not support jp2 files! Quote Deviant Art Gallery Link to comment Share on other sites More sharing options...
BuzzKill Posted April 19, 2006 Share Posted April 19, 2006 Png - 1700 KB (1.66 MB)Jp2 - 925 KB Wow! Almost half the file size! Quote - DO NOT contact me asking for the .pdn of my avatar or the PDN logo. Thank you. Have a nice day. Link to comment Share on other sites More sharing options...
Born2killx Posted April 19, 2006 Share Posted April 19, 2006 mut for me, jp2 has a much bigger filesize.. i'll stick with png because then everyone can see it. Quote I built my first computer at age 11! Link to comment Share on other sites More sharing options...
aatwo Posted April 19, 2006 Share Posted April 19, 2006 Well I just did another test using this image. http://www.aatwo.com/Images/gallery/ins ... 24x768.png jp2 - 1028 KB png - 1647 KB Here is the zip file with both files in if you dont believe me! http://www.aatwo.com/other%20files/pngvjp2.zip Are you sure you arn't comparing the size on disk between MB and KB? Quote Deviant Art Gallery Link to comment Share on other sites More sharing options...
crosswalker Posted April 20, 2006 Share Posted April 20, 2006 hey aatwo, I just downloaded the zip and the file size, in bytes, is 1,027,542 for jp2 and 1,653,621 for png. typo up there ^ maybe? Quote Link to comment Share on other sites More sharing options...
aatwo Posted April 20, 2006 Share Posted April 20, 2006 oops I wrote them the wrong way round. Thanks for pointing that out Quote Deviant Art Gallery Link to comment Share on other sites More sharing options...
Bob Posted April 20, 2006 Share Posted April 20, 2006 Png - 1028 KBJp2 - 1647 KB It's png -> 1647 & Jp2 -> 1028 Quote No. Way. I've just seen Bob. And... *poof!*—just like that—he disappears into the mist again. ~Helio Link to comment Share on other sites More sharing options...
aatwo Posted April 20, 2006 Share Posted April 20, 2006 lol sorry. I mustve forgot to edit it at the time. BUt yes, jp2 - 1028 KB png - 1647 KB Quote Deviant Art Gallery Link to comment Share on other sites More sharing options...
LonelyPixel Posted April 30, 2006 Share Posted April 30, 2006 Hi, interesting plug-in, nice to see someone cares about Jpeg2000. I have a 32bit Windows XP SP2 but it doesn't work. In the save dialogue, in the preview window, it only shows an image when I set compression to 100%, but it's a very high size then of course. Everything below 100% says the file would be 415 bytes with an entirely transparent image. Quote Link to comment Share on other sites More sharing options...
Pc dokter Posted May 1, 2006 Share Posted May 1, 2006 I have the same problem. I am working with Win2K, all patches included. Quote Link to comment Share on other sites More sharing options...
Gumboot Posted May 15, 2006 Author Share Posted May 15, 2006 Pc dokter & LonelyPixel: Thanks for the report. I'll have a go at trying to reproduce this problem tomorrow. Quote Link to comment Share on other sites More sharing options...
Pc dokter Posted June 8, 2006 Share Posted June 8, 2006 Have you already found a solution for this problem ? Anyway good job Quote Link to comment Share on other sites More sharing options...
Dean Harding Posted July 28, 2006 Share Posted July 28, 2006 So what's the deal with these .jp2 files? Why would I ever use it and what does it do and what are the advantages and disadvantages etc etc etc. The advantages are that it given much better compression with much higher quality than normal .jpg. As others have posted, it even gives better compression than PNG for lossless (i.e. no loss in quality at all) because it uses an algorithm specifically designed for images, while PNG uses a general-purpose algorithm. The disadvantages, as you've seen, is that almost nothing supports it yet... which is a shame, really. Quote Link to comment Share on other sites More sharing options...
Roobok Posted November 12, 2010 Share Posted November 12, 2010 I have been using JP2 (JPEG 2000) as the perfect archiving format for photos and special documents for many years now. It is odd that it's not more widely supported, because it is LOSSLESS. Microsoft should have included a previewer for JP2, but there's no point in delving into their incompetence in just about everything. Irfanview (freeware viewer) supports the viewing of JP2. I use COREL PhotoPAINT, which has full support for JP2 opening, editing, and saving. I guess the other major graphics packages also have full support, but you're going to pay for them. Still, I love PAINT.net, because it is a wonderful piece of software, and does just about anything one could want. I will give the JP2 plugin a go, for sure. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.