I am using both the JAI media apis and ImageMagick?
ImageMagick has some scalability issues and the JNI based JMagick isn't attractive either. JAI has poor quality results when doing resizing operations compared to ImageMagick.
Does anyone know of any excellent tools either open source or commercial that are native java and deliver high quality results?
There's ImageJ, which boasts to be the
world's fastest pure Java image processing program
It can be used as a library in another application. It's architecture is not brilliant, but it does basic image processing tasks.
I'm not a Java guy, but OpenCV is great for my needs. Not sure if it fits yours. Here's a Java port, I think: http://docs.opencv.org/2.4/doc/tutorials/introduction/desktop_java/java_dev_intro.html
For commercial tools, you might want to try Snowbound.
My experience with them is somewhat dated, but I found their Java Imaging API to be a lot easier to use than JAI and a lot faster.
Their customer support and code samples were very good too.
RoboRealm vision software list mentions JHLabs and NeatVision among lots of other non-Java based libraries.
