Deep Zoom (aka Seadragon) provides the ability to interactively view high-resolution images. You can zoom in and out of images rapidly without affecting the
H. Said, M. Guimaraes, Z. Maamar, and L. Jololian. ITiCSE '09 Proceedings of the 14th annual ACM SIGCSE conference on Innovation and technology in computer science education, (2009)