I’ve been trying to find software for batch generation of thumbnails for JPEG2000 images. So far this is what I’ve looked at:
Kakadu is commercial software that looked hopeful at first, but the licensing is confusing. The description of the “Non-commercial, Named User Licence” says it “can only be purchased by individuals, Academic Institutions, not-for-profit organizations and libraries which do not gain financially by using this software,” but the license itself doesn’t say anything about licensing to institutions, only individuals. Our attempts to get a clarification have gotten no response. If they ignore us when we want to buy something, that doesn’t bode well for support.
OpenJPEG has its supporters, but it has a command line API which can’t create JPEG, GIF, or PNG, and it can’t create images of a specified size. There are C functions which may or may not be directly callable, but the documentation for them is really scanty.
ImageMagick didn’t seem appealing at first because of its command-line orientation, but it may be the best option. JMagick provides a JNI connection. The documentation indicates it can generate images of a specified size and format, which is what we need.
If anybody reading this has other suggestions, let me know.