Mixed and augmented-reality (MR-AR) techniques  selectively augment the physical environment with computer-generated objects or vice versa. There exists tremendous interest in exploring the applications of these techniques in such areas as training and education, medical diagnosis and surgery planning, and scientific visualization. Developing the MR-AR enabling technologies and applications provides a rich cross-disciplinary research and education platform that is nicely networked with the fields of optical sciences, computer science, and electrical and computer engineering. The 3D Visualization and Imaging System Lab (3DVIS Lab), which Dr. Hua started in 1999 when she was a Beckman Fellow at the University of Illinois at Urbana-Champaign, is now situated in the heart of the Optics Valley at the University of Arizona. The primary research interests we pursue at the 3DVIS lab are to develop 3D displays, imaging systems, and 3D human computer interaction (HCI) tools, and to explore applications of these technologies in the fields of 3D scientific visualization and collaborative augmented virtual environments (AVE). In terms of long-term vision, we are interested in creating interdisciplinary technologies on the boundary of human vision, machine vision, and information technology, to enhance environments in which we work and live.