Many institutions host many different kinds of image data, either from observations or from simulations.  I have put instructions on how to convert image data to a format the Helioviewer Project uses on our wiki page. The wiki is where we keep our must up-to-date instructions on the installation and use of all the software we are developing.

Contact me if you encounter any problem with the JP2Gen instructions , or with implementing JP2Gen on your local system (or any other part of the wiki). I’d be very happy to get your feedback!