I have explored several leads (sample apps) in the JAI/ImageIO arena, and have so far come up lacking in performance.
It may just be that Java is not the platform for fast viewing/scaling/editing of tiff files.
I am looking to produce performance similar to Irfanview, but so far haven't found what I am looking for.
JAI\ImageIO seems possible - but there seems to be many variations in how one can load/scale/display the images (in so far as performance is concerned).
Anyone have any luck or recommendations for other rocks to turn over (other libraries, or even JNI c extension route) would love to hear them!