Prof. Daniel J. Sandin Profile

Prof. Daniel J. Sandin

Director

SPIE Involvement:

Author

Proceedings Article | 4 March 2013 Paper

CAVE2: a hybrid reality environment for immersive simulation and information analysis

Alessandro Febretti, Arthur Nishimoto, Terrance Thigpen, Jonas Talandis, Lance Long, J. Pirtle, Tom Peterka, Alan Verlo, Maxine Brown, Dana Plepys, Dan Sandin, Luc Renambot, Andrew Johnson, Jason Leigh

Proceedings Volume 8649, 864903 (2013) https://doi.org/10.1117/12.2005484

KEYWORDS: Visualization, LCDs, Virtual reality, Cameras, 3D displays, Head, Human-machine interfaces, Image resolution, Eye, Visual analytics

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Proceedings Article | 27 January 2011 Paper

Acquisition of stereo panoramas for display in VR environments

Richard Ainsworth, Daniel Sandin, Jurgen Schulze, Andrew Prudhomme, Thomas DeFanti, Madhusudhanan Srinivasan

Proceedings Volume 7864, 786416 (2011) https://doi.org/10.1117/12.872521

KEYWORDS: Panoramic photography, Photography, Optical spheres, Spherical lenses, Cameras, Image resolution, Eye, Image processing, Visualization, Virtual reality

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Proceedings Article | 9 March 2007 Paper

Evolution of the Varrier autostereoscopic VR display: 2001-2007

Tom Peterka, Robert Kooima, Javier Girado, Jinghua Ge, Daniel Sandin, Thomas DeFanti

Proceedings Volume 6490, 649004 (2007) https://doi.org/10.1117/12.703567

KEYWORDS: Visualization, Cameras, Eye, Imaging systems, LCDs, Head, Calibration, Glasses, Prototyping, Displays

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Autostereoscopy (AS) is an increasingly valuable virtual reality (VR) display technology; indeed, the IS&T / SPIE Electronic Imaging Conference has seen rapid growth in the number and scope of AS papers in recent years. The first Varrier paper appeared at SPIE in 2001, and much has changed since then. What began as a single-panel prototype has grown to a full scale VR autostereo display system, with a variety of form factors, features, and options. Varrier is a barrier strip AS display system that qualifies as a true VR display, offering a head-tracked ortho-stereo first person interactive VR experience without the need for glasses or other gear to be worn by the user. Since Varrier's inception, new algorithmic and systemic developments have produced performance and quality improvements. Visual acuity has increased by a factor of 1.4X with new fine-resolution barrier strip linescreens and computational algorithms that support variable sub-pixel resolutions. Performance has improved by a factor of 3X using a new GPU shader-based sub-pixel algorithm that accomplishes in one pass what previously required three passes. The Varrier modulation algorithm that began as a computationally expensive task is now no more costly than conventional stereoscopic rendering. Interactive rendering rates of 60 Hz are now possible in Varrier for complex scene geometry on the order of 100K vertices, and performance is GPU bound, hence it is expected to continue improving with graphics card enhancements. Head tracking is accomplished with a neural network camera-based tracking system developed at EVL for Varrier. Multiple cameras capture subjects at 120 Hz and the neural network recognizes known faces from a database and tracks them in 3D space. New faces are trained and added to the database in a matter of minutes, and accuracy is comparable to commercially available tracking systems. Varrier supports a variety of VR applications, including visualization of polygonal, ray traced, and volume rendered data. Both AS movie playback of pre-rendered stereo frames and interactive manipulation of 3D models are supported. Local as well as distributed computation is employed in various applications. Long-distance collaboration has been demonstrated with AS teleconferencing in Varrier. A variety of application domains such as art, medicine, and science have been exhibited, and Varrier exists in a variety of form factors from large tiled installations to smaller desktop forms to fit a variety of space and budget constraints. Newest developments include the use of a dynamic parallax barrier that affords features that were inconceivable with a static barrier.

Proceedings Article | 30 May 2003 Paper

Real-time 3D hand tracking in a virtual environment

Kevin Smith, Daniel Sandin, Thomas Huang, Joshua Eliason, Geoff Baum

Proceedings Volume 5006, (2003) https://doi.org/10.1117/12.477348

KEYWORDS: Cameras, Magnetic tracking, Video, Mirrors, Virtual reality, 3D modeling, Image filtering, Optical filters, 3D image processing, Imaging systems

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Proceedings Article | 25 March 2003 Paper

Real-time camera-based face detection using a modified LAMSTAR neural network system

Javier Girado, Daniel Sandin, Thomas DeFanti, Laura Wolf

Proceedings Volume 5015, (2003) https://doi.org/10.1117/12.477405

KEYWORDS: Facial recognition systems, Neurons, Neural networks, Sensors, Cameras, Head, Video, Virtual reality, Imaging systems, LCDs

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Proceedings Article | 22 June 2001 Paper

Varrier autostereographic display

Daniel Sandin, Todd Margolis, Greg Dawe, Jason Leigh, Thomas DeFanti

Proceedings Volume 4297, (2001) https://doi.org/10.1117/12.430818

KEYWORDS: Eye, LCDs, Virtual reality, Plasma, Visualization, Computer simulations, Glasses, Image processing, Human-machine interfaces, Head

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Proceedings Article | 3 May 2000 Paper

Building a VR narrative

Josephine Anstey, Dave Pape, Daniel Sandin

Proceedings Volume 3957, (2000) https://doi.org/10.1117/12.384463

KEYWORDS: Virtual reality, Visualization, Cultural heritage, Computer programming, Brain, 3D modeling, Glasses, C++, Video, Head

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Proceedings Article | 24 May 1999 Paper

Transparently supporting a wide range of VR and stereoscopic display devices

Dave Pape, Daniel Sandin, Thomas DeFanti

Proceedings Volume 3639, (1999) https://doi.org/10.1117/12.349399

KEYWORDS: Eye, Visualization, Video, Virtual reality, Head-mounted displays, Stereoscopic displays, OpenGL, Glasses, Computer architecture, Systems modeling

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Proceedings Article | 28 December 1998 Paper

Next-generation tele-immersive devices for desktop transoceanic collaboration

Andrew Johnson, Jason Leigh, Thomas DeFanti, Daniel Sandin, Maxine Brown, Greg Dawe

Proceedings Volume 3653, (1998) https://doi.org/10.1117/12.334652

KEYWORDS: Virtual reality, Visualization, Computer aided design, Video, Glasses, Tin, Prototyping, Ear, Head, Ions

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Proceedings Article | 16 February 1996 Paper

High-bandwidth and high-resolution immersive interactivity

Thomas DeFanti, Daniel Sandin, Gary Lindahl, Maxine Brown

Proceedings Volume 2663, (1996) https://doi.org/10.1117/12.233041

KEYWORDS: Video, Visualization, Virtual reality, Internet, Head, Computer simulations, Head-mounted displays, Glasses, Distributed computing, Cameras

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Proceedings Article | 1 September 1990 Paper

New advances in computer-generated barrier-strip autostereography

Stephan Meyers, Daniel Sandin, William Cunnally, Ellen Sandor, Thomas DeFanti

Proceedings Volume 1256, (1990) https://doi.org/10.1117/12.19914

KEYWORDS: Photography, Printing, Scanners, Stereoscopic displays, Image processing, Cameras, Computing systems, Visualization, Image quality, Refraction

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Showing 5 of 11 publications

Conference Committee Involvement (4)

The Engineering Reality of Virtual Reality 2006

19 January 2006 | San Jose, California, United States

The Engineering Reality of Virtual Reality 2005

20 January 2005 | San Jose, California, United States

The Engineering Reality of Virtual Reality 2004

22 January 2004 | San Jose, California, United States

The Engineering Reality of Virtual Reality 2003

24 January 2003 | Santa Clara, CA, United States

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