Herman Towles

Abstract Achieving Color Uniformity Across Multi-Projector Displays (2009)

Aditi Majumder, Zhu He, Herman Towles, Greg Welch

Large area tiled displays are gaining popularity for use in collaborative immersive virtual environments and scientific visualization. While recent work has addressed the issues of geometric...

Improving, Expanding and Extending 3D Telepresence Abstract (2008)

Greg Welch, Henry Fuchs, Bruce Cairns, Ketan Mayer-patel, Diane H. Sonnenwald, Ruigang Yang, ...

For over a decade we have been pursuing a vision of threedimensional (3D) telepresence. Our primary driving problem is 3D medical consultation. Our basic goal is to enhance and expand medical...

A Personal Surround Environment: Projective Display with Correction for Display Surface Geometry and Extreme Lens Distortion ABSTRACT (2008)

Tyler Johnson, Florian Gyarfas, Rick Skarbez, Herman Towles, Henry Fuchs

Projectors equipped with wide-angle lenses can have an advantage over traditional projectors in creating immersive display environments since they can be placed very close to the display surface to...

Andries van Dam (2008)

Anselmo Lastra, Bruce Cairns, Herman Towles, Henry Fuchs, Immersive Electronic, Ruigang Yang, ...

books (IEBooks) for surgical training will let surgeons explore previous surgical procedures in 3D. The authors describe the techniques and tools for creating a preliminary IEBook embodying some of...

Multi-Projector Image Correction on the GPU (2008)

Tyler Johnson Florian, Florian Gyarfas, Rick Skarbez, Patrick Quirk, Herman Towles, Henry Fuchs

Multi-projector displays require a variety of image correction techniques. Geometric distortions resulting from projecting onto non-planar display surfaces and non-linear properties of projector...

Abstract PixelFlex: A Reconfigurable Multi-Projector Display System (2007)

Ruigang Yang, David Gotz, Justin Hensley, Herman Towles

This paper presents PixelFlex – a spatially reconfigurable multi-projector display system. The PixelFlex system is composed of ceiling-mounted projectors, each with computer-controlled pan, tilt,...

Large Displays Projected Imagery in Your “Office of (2007)

The Future, Andrei State, Greg Welch, Henry Fuchs, Ramesh Raskar, Herman Towles, ...

In July 1998 we presented a long-term vision for a project we call the “Office of the Future ” at ACM Siggraph 98. 1 Our dream, depicted in Figure 1, is that some day your office will have...

RANSAC-Assisted Display Model Reconstruction for Projective Display (2006)

Patrick Quirk, Tyler Johnson, Rick Skarbez, Herman Towles, Florian Gyarfas, Henry Fuchs

Using projectors to create perspectively correct imagery on arbitrary display surfaces requires geometric knowledge of the display surface shape, the projector calibration, and the user's...

Immersive Electronic (2005)

Books Iebooks For, Anselmo Lastra, Bruce Cairns, Herman Towles, Henry Fuchs, Immersive Electronic, ...

ursued related work formally and informally with multiple collaborators. In 2002, we presented an intermediate summary of results from a three-year effort incorporating teleimmersion technologies...

Remote 3D Medical Consultation (2005)

Greg Welch Diane, Diane H. Sonnenwald, Ketan Mayer-patel, Ruigang Yang, Andrei State, Herman Towles, ...

Two-dimensional (2D) video-based telemedical consultation has been explored widely in the past 15--20 years. Two issues that seem to arise in most relevant case studies are the difficulty associated...

Remote 3D medical consultation (2005)

Greg Welch, Diane H. Sonnenwald, Ketan Mayer-patel, Ruigang Yang, Andrei State, Herman Towles, ...

Abstract — Two-dimensional (2D) video-based telemedical consultation has been explored widely in the past 15– 20 years. Two issues that seem to arise in most relevant case studies are the...

Ratio Current FPS: Desired FPS (2005)

Herman Towles, Frame Rate Register

Basic frame rate control is determined by the Current_Frame_Rate register (0x600), which for the Dragonfly provides four basic frame rates – 3.75, 7.5, 15 and 30 fps 1. Using the Frame_Rate...

3d telepresence for off-line surgical training and on-line remote consultation (2004)

Greg Welch, Ruigang Yang, Bruce Cairns, Herman Towles, Dan Russo, ...

We present an overview of multi-year efforts aimed at developing technology to support natural telepresence over time for off-line surgical training, and over space for on-line or “live ” remote...

Transport and rendering challenges for multi-stream 3d tele-immersion data (2003)

Herman Towles, Sang-uok Kum, Travis Sparks, Sudipta Sinha, Scott Larsen, Nathan Beddes

For over four years, our colleagues at the University of Pennsylvania 1 and we have been developing an experimental 3D tele-immersion testbed with the goal of providing high-fidelity scene...

Real-time Terascale Implementation of Tele-immersion (2003)

Nikhil Kelshikar, Xenophon Zabulis, Jane Mulligan, Kostas Daniilidis, Sudipta Sinha, Travis Sparks, ...

Abstract. Tele-immersion is a new medium that enables a user to share a virtual space with remote participants, by creating the illusion that users at geographically dispersed locations reside at the...

PixelFlex2: A Comprehensive, Automatic, Casually-Aligned Multi-Projector Display (2003)

Andrew Raij, Gennette Gill, Aditi Majumder, Herman Towles, Henry Fuchs

We introduce PixelFlex2, our newest scalable wall-sized, multi-projector display system. For it, we had to solve most of the difficult problems left open by its predecessor, PixelFlex, a...

Creating Adaptive Views for Group Video Teleconferencing – An Image-Based Approach (2002)

Ruigang Yang, Celso Kurashima, Andrew Nashel, Herman Towles, Anselmo Lastra, Henry Fuchs

We present a system and techniques for synthesizing views for many-to-many video teleconferencing. Instead of replicating oneto-one systems for each pair of users, or performing complex 3D scene...

H.: 3D Tele-Collaboration over internet 2 (2002)

Herman Towles, Wei-chao Chen, Ruigang Yang, Sang-uok Kum, Henry Fuchs, Carolina Chapel Hill, ...

Figure 1: Our 3D tele-immersion realization with the local user manipulating the visible human data set using a virtual laser pointer. The local user sees the remote collaborator in perspectively...

B.: Tele-immersion Portal: Towards an Ultimate Systhesis (2001)

Amela Sadagic, Herman Towles, Loring Holden, Kostas Daniilidis, Bob Zeleznik

We describe a novel approach for unifying computer graphics and computer vision systems, and our initial results in building and using a prototype system. This approach has three significant...

B.: Tele-immersion Portal: Towards an Ultimate Systhesis (2001)

Amela Sadagic, Herman Towles, Loring Holden, Kostas Daniilidis, Bob Zeleznik

We describe a novel approach for unifying computer graphics and computer vision systems, and our initial results in building and using a prototype system. This approach has three significant...

B.: Tele-immersion Portal: Towards an Ultimate Systhesis (2001)

Amela Sadagic, Herman Towles, Loring Holden, Kostas Daniilidis, Bob Zeleznik

We describe a novel approach for unifying computer graphics and computer vision systems, and our initial results in building and using a prototype system. This approach has three significant...

Toward a Compelling Sensation of Telepresence: Demonstrating a portal to a distant (static) office (2000)

Wei-chao Chen, Herman Towles, Lars Nyland, Greg Welch, Henry Fuchs

In 1998 we introduced the idea for a project we call the Office of the Future. Our long-term vision is to provide a better every-day working environment, with high-fidelity scene reconstruction for...

Achieving Color Uniformity Across Multi-Projector Displays (2000)

Aditi Majumder, Zhu He, Herman Towles, Greg Welch

Large area tiled displays are gaining popularity for use in collaborative immersive virtual environments and scientific visualization. While recent work has addressed the issues of geometric...

Multi-Projector Displays Using Camera-Based Registration (1999)

Ramesh Raskar, Michael Brown, Ruigang Yang, Wei-chao Chen, Greg Welch, Herman Towles, ...

Conventional projector-based display systems are typically designed around precise and regular configurations of projectors and display surfaces. While this results in rendering simplicity and speed,...

Multi-Projector Displays Using Camera-Based Registration (1999)

Ramesh Raskar, Michael Brown, Ruigang Yang, Wei-chao Chen, Greg Welch, Herman Towles, ...

Conventional projector-based display systems are typically designed around precise and regular configurations of projectors and display surfaces. While this results in rendering simplicity and speed,...