Real-time tomographic holography for augmented reality.
The concept and instantiation of real-time tomographic holography (RTTH) for augmented reality is presented. RTTH enables natural hand-eye coordination to guide invasive medical procedures without requiring tracking or a head-mounted device. It places a real-time virtual image of an object's cross section into its actual location, without noticeable viewpoint dependence (e.g., parallax error). The virtual image is viewed through a flat narrowband holographic optical element (HOE) with optical power that generates an in-situ virtual image (within 1 m of the HOE) from a small spatial light modulator display without obscuring a direct view of the physical world. Rigidly fixed upon a medical ultrasound probe, an RTTH device could show the scan in its actual location inside the patient, even as the probe was moved relative to the patient.
Galeotti
John M
JM
The Robotics Institute, Carnegie Mellon University, 5000 Forbes Avenue, Pittsburgh, Pennsylvania 15213, USA. galeotti+osa@cs.cmu.edu
Siegel
Mel
M
Stetten
George
G
D003198:Computer Simulation; D003952:Diagnostic Imaging / Q000379:methods*; D005260:Female; D047109:Fetal Development / Q000502:physiology*; D006257:Head; D006696:Holography / Q000379:methods*; D006801:Humans; D011247:Pregnancy; D015203:Reproducibility of Results; D014054:Tomography; D014057:Tomography, X-Ray Computed; D016216:Ultrasonography, Prenatal