Hugh Lauer

Simulating Surgery using Volumetric Object Representations, RealTime

Surgical simulation has many applications in education and training, surgical planning, and intra... more

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A Unified Traffic Control Scheme for ATM Networks

The paper proposes a generic traffic control specification at the UNI unifying the characteristic... more

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A Program Structure for Error Detection and Recovery

by Hugh Lauer and Brian Randell

Reliable Computer Systems, 1985

The paper describes a method of structuring programs which aids the design and validation of faci... more The paper describes a method of structuring programs which aids the design and validation of facilities for the detection of and recovery from software errors. Associated with the method is a mechanism for the automatic preservation of restart information at a level of overhead which is believed to be tolerable.

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Sum frequency generation spectroscopy of ultrathin biomolecular films on enhanced by visible surface plasmon excitation

2003 European Quantum Electronics Conference. EQEC 2003 (IEEE Cat No.03TH8665), 2003

Strong enhancement of an electric field at the metal-dielectric interface due to the visible surf... more Strong enhancement of an electric field at the metal-dielectric interface due to the visible surface plasmon-polariton (SP) excitation can be achieved both for linear and for nonlinear spectral measurements. This effect is used to increase the SFG yield of ultrathin biomolecular (thiopeptide) monolayer film on the gold surface. Using the optical scheme with co-propagating infrared and visible laser beams and

The VolumePro real-time ray-casting system

Proceedings of the 26th annual conference on Computer graphics and interactive techniques - SIGGRAPH '99, 1999

... VolumePro is the commercial implementation of EM-Cube, and it makes several important enhance... more

Simulating arthroscopic knee surgery using volumetric object representations, real-time volume rendering and haptic feedback

Lecture Notes in Computer Science, 1997

A system for simulating arthroscopic knee surgery that is based on volumetric object models deriv... more A system for simulating arthroscopic knee surgery that is based on volumetric object models derived from 3D Magnetic Resonance Imaging is presented. Feedback is provided to the user via real-time volume rendering and force feedback for haptic exploration. The system is the result of a unique collaboration between an industrial research laboratory, two major universities, and a leading research hospital. In this paper, components of the system are detailed and the current state of the integrated system is presented. Issues related to future research and plans for expanding the current system are discussed. Abstract A system for simulating arthroscopic knee surgery that is based on volumetric object models derived from 3D Magnetic Resonance Imaging is presented. Feedback is provided to the user via real-time volume rendering and force feedback for haptic exploration. The system is the result of a unique collaboration between an industrial research laboratory, two major universities, and a leading research hospital. In this paper, components of the system are detailed and the current state of the integrated system is presented. Issues related to future research and plans for expanding the current system are discussed.

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EM-Cube

Proceedings of the ACM SIGGRAPH/EUROGRAPHICS workshop on Graphics hardware - HWWS '97, 1997

... Rtindy Osborne* Hanspeter Pfister Hugh Lauer Neil McKenzie TakaHide Ohkarni Sarah Gibson Wall... more

Volume Rendering by Ray-Casting in Shear-Image Order

Monographs in Computer Science, 2004

Shear-image order ray casting volume rendering

Proceedings of the 2003 symposium on Interactive 3D graphics - SI3D '03, 2003

This paper describes shear-image order ray casting, a new method for volume rendering. This metho... more This paper describes shear-image order ray casting, a new method for volume rendering. This method renders sampled data in three dimensions with image quality equivalent to the best of ray-per-pixel volume rendering algorithms (full image order), while at the same time retaining computational complexity and spatial coherence near to that of the fastest known algorithm (shear-warp). In shear-image order, as

A SIMDizing C Compiler for the Mitsubishi Electric Neuro4 Processor Array

Abstract

Seiler "the volumepro real-time ray-casting system

Volumetric object modeling for surgical simulation

Medical Image Analysis, 1998

Surgical simulation has many applications in medical education, surgical training, surgical plann... more Surgical simulation has many applications in medical education, surgical training, surgical planning and intra-operative assistance. However, extending current surface-based computer graphics methods to model phenomena such as the deformation, cutting, tearing or repairing of soft tissues poses significant challenges for real-time interactions. This paper discusses the use of volumetric methods for modeling complex anatomy and tissue interactions. New techniques are introduced that use volumetric methods for modeling soft-tissue deformation and tissue cutting at interactive rates. An initial prototype for simulating arthroscopic knee surgery is described which uses volumetric models of the knee derived from 3-D magnetic resonance imaging, visual feedback via real-time volume and polygon rendering, and haptic feedback provided by a force-feedback device.

Fusion of small unilamellar vesicles onto laterally mixed self-assembled monolayers of thiolipopeptides

Journal of Colloid and Interface Science, 2003

Monolayers of the thiolipopeptide NH 2 -Cys-Ala-Ser-Ala-Ala-Ser-Ser-Ala-Pro-Ser-Ser-(Myr)Lys(Myr)... more Monolayers of the thiolipopeptide NH 2 -Cys-Ala-Ser-Ala-Ala-Ser-Ser-Ala-Pro-Ser-Ser-(Myr)Lys(Myr)-OH (III) were formed on gold surfaces by self-assembly, mixed with a lateral spacer of the same peptide composition, NH 2 -Cys-Ala-Ser-Ala-Ala-Ser-Ser-Ala-Pro-Ser-Ser-Lys-OH (I). Different mixing ratios were employed ranging from 0.1 to 1, corresponding to 10-100% thiolipopeptide. These self-assembled monolayers (SAMs) were then exposed to a suspension of liposomes with the aim of forming lipid bilayers as a function of the mixing ratio. A clear optimum with respect to homogeneity and electrical properties of the membranes was obtained in the middle region (0.5) of mixing ratio, as revealed by surface plasmon resonance spectroscopy, impedance spectroscopy, and fluorescence microscopy. The combination of these methods was shown to be a powerful tool, although a true lipid bilayer was not obtained. Instead, vesicle adsorption was shown to be the predominant process, and FRAP (fluorescence recovery after photobleaching) measurements showed that the films were not fluid on the micrometer length scale.

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Pilot: an operating system for a personal computer

Communications of the ACM, 1980

The Pilot operating system provides a single-user, single-language environment for higher level s... more The Pilot operating system provides a single-user, single-language environment for higher level software on a powerful personal computer. Its features include virtual memory, a large "fiat" file system, streams, network communication facilities, and concurrent programming support. Pilot thus provides rather more powerful facilities than are normally associated with personal computers. The exact facilities provided display interesting similarities to and differences from corresponding facilities provided in large multi-user systems. Pilot is implemented entirely in Mesa, a highlevel system programming language. The modularization of the implementation displays some interesting aspects in terms of both the static structure and dynamic interactions of the various components.

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Merl A Mitsubishi Electric Research Laboratory

by Charles Rich, Chia Shen, and Hugh Lauer

Multiplicative weight-updating algorithmssuch as Winnowhave been studied extensivelyin the COLT l... more

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