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A comment on Free Lossless Image Format. Parent comment

Re:Free Lossless Image Format by jpambrun on Friday October 02, 2015 @10:02AM (#10318563)
JPEG 2000 is capable of compressing 1969x1307 images without issues. I work with JPEG 2000 codecs every day. It is commonly used in Virtual Microscopy with images in the tens of gigabytes as well as with small 256x256 MRI. I don't know why the author does not present "JPEG 2000 at this size".

Edit: I was confused since with most coders you can specify precise mean squared error optimal truncation points (called quality layers) and it should have been very easy to obtain a stream of any particular file size.

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Re:Free Lossless Image Format by vidarh on Friday October 02, 2015 @10:15AM (#10318659)
That example is looking at a specific file size. So what he's saying is that he was unable to produce a JPEG 2000 image in a file that size from that image, not from an image of that resolution in general.
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Re:Free Lossless Image Format by silverbacknet on Saturday October 03, 2015 @01:28AM (#10322733)
He didn't try hard enough. OpenJPEG has a file size parameter, which can go well below its -q 0 size. I was easily able to generate a 16.9K jp2 by specifying the size: https://dl.dropboxusercontent.com/u/54412753/doom9/fish.jp2 which in png looks like: https://dl.dropboxusercontent.com/u/54412753/doom9/fish.jp2....

Looks better than anything else but BPG at that size, to me, although FLIF obviously isn't optimized for lossy.

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Re:Free Lossless Image Format by jonsneyers on Saturday October 03, 2015 @05:31AM (#10323243)
Thanks for pointing this out! I only tried ImageMagick convert at minimum -quality. Sorry about that.
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