The Sonic Flashlight and Related Projects
Time and Place
Auditorium (NSH 1305)
Refreshments 3:15 pm
Talk 3:30 pm
We are developing a new method of interactive visualization, which we call Real Time Tomographic Reflection (RTTR). In this method, a virtual image is displayed inside a target, overlaid on a direct view of the target’s exterior, without tracking or a head-mounted display. A clinical device using RTTR, the Sonic Flashlight, has just undergone its first clinical trial for the placement of catheters in the deep veins of the arm. The Sonic Flashlight combines a conventional ultrasound scanner, a small flat-panel display, and a half-silvered mirror into a rigid handheld device, which reflects the ultrasound image into its actual location within the patient. This permits the clinician to aim a needle directly into the image of a vein, using a single perceptual environment. The current prototype of the Sonic Flashlight is the sixth iteration developed over the past five years. A number of related approaches are also being explored, including holographic and scaled robotic versions of RTTR. All of these aim to provide natural hand-eye coordination using virtual images to superimpose some scanning technology onto human vision. A wide range of applications is possible, from medical to SCUBA to search-and-rescue. The general psycho-perceptual principles behind the new display technique are being investigated.
George Stetten is the
director of the Visualization and Image Analysis (VIA) Laboratory at CMU and
For appointments, please contact Stephanie Matvey.