PhD Defense: "High Dynamic Range and 3D Video Communications for Handheld Devices"

Stephen Mangiat

October 17th (Wednesday), 11:00am
Harold Frank Hall (HFH), Rm 4164

Handheld devices with “glasses-free” autostereoscopic displays present a new opportunity for 3D video communications. 3D can enhance realism and enrich the user experience, yet it must be employed without visual discomfort. Display-camera geometry and recent “zone of comfort” research underscore the challenge in creating perceptually satisfying and comfortable 3D content for handheld devices. Shift-convergence can minimize disparities within regions of interest, such as a user’s face during video communications, yet this can lead to large disparities in the background that the viewer is unable to fuse. Reducing camera separation, in an attempt to minimize all disparities, may lead to a flat appearance that does not aid realism.

Our research explores the unique stereoscopic challenges posed by handheld 3D video communications. We derive camera separations for optimal viewing comfort and realism of depths within the face. A novel bi-layer disparity remapping technique aligns the front of a user’s face onto the screen for comfort, while limiting uncomfortable background disparities. Results and recommendations are evaluated by a user study with a current 3D handheld device. Additionally, this talk will highlight our efforts towards High Dynamic Range (HDR) Video for handheld video communications, for improved video quality in uneven lighting conditions using inexpensive sensors.

About Stephen Mangiat:

photo of Stephen Mangiat Stephen Mangiat received his B.S. in Electrical and Computer Engineering from Carnegie Mellon University in 2005, and his M.S. in Electrical and Computer Engineering from the University of California, Santa Barbara, in 2008, where he is working towards a Ph.D. in Prof. Jerry Gibson's VivoNets Lab. His research interests include High Dynamic Range (HDR) Video for inexpensive cameras and 3D video communications for handheld devices.

Hosted by: Professor Jerry Gibson