Legacy ImageMagick Discussions Archive

Hi,
I'm trying to write a Lossless JPEG 2000 image from Magick++ (the C++ ImageMagick binding). If I just save with magick="JP2", I get a JPEG 2000 image that's very close to the original, but has lots of off-by-1 errors.

From these forums, it sounds like ImageMagick can itself do Lossless JPEG 2000. Anyone know how to tell Magick++ to do this?

Adam

IM uses the Jasper delegate library to do JP2000. You can use that delegate library stand alone if you want to test things.

Thanks. Any pointers on how to do this? (Does Jasper have API docs somewhere?; I've not been able to find them, only the general overview doc on its website.)

I have never used it directly. Docs at http://www.ece.uvic.ca/~mdadams/jasper/jasper.pdf. You could try searching the IM archives and see if there are any pointers.

Yeah; those are the general/abstract design docs, not API docs.

This feels a lot me like the off-by-1 bug discussed elsewhere in these forums. But I'm setting "jp2:mode=int" and that's not helping, and I'm running a newer version of ImageMagick than the noted buggy one...