high performance computing on graphics processing units: hgpu.org

Large-scale scenarios of vehicular traffic simulation problems are characterized by complex queuing effects, control mechanisms and other interactions of the traffic on the control and vice versa. While small-sized scenarios are relatively easy to explore and analyze, larger scenarios need specialized treatment for efficient execution. The simulation challenges of speed and scale become pronounced when […]

This paper proposes a novel six-face spherical map, isocube, that fully utilizes the cubemap hardware built in most GPUs. Unlike the cubemap, the proposed isocube uniformly samples the unit sphere (uniformly distributed), and all samples span the same solid angle (equally important). Its mapping computation contains only a small overhead. By feeding the cubemap hardware […]

Image authentication is an important technology to protect images from being malicious tampered and have became an indispensable part of digital world. The main schemes used for image authentication are signature and watermarking in the last decade. However, in traditional serial manners, the operations of both methods are time-consuming, and limit the wide use of […]

The atomic force microscope (AFM) is a versatile, high-resolution tool used to characterize the topography and material properties of a large variety of specimens at nano-scale. The interaction of the micro-cantilever tip with the specimen causes cantilever deflections that are measured by an optical sensing mechanism and subsequently utilized to construct the sample topography. Recent […]

Modern graphic cards enable applications to process big amounts of graphical data faster than CPUs, allowing high-volume parallelizable data to be visualized in real-time. In this paper, we present an approach to enable a power grid planning Computer-Aided-Design application to use this processing power to visualize electrical distribution grids in the fastest possible way. As […]

In seeking to model realistic room acoustics, direct numerical simulation can be employed. This paper presents 3D Finite Difference Time Domain schemes that incorporate losses at boundaries and due to the viscosity of air. These models operate within a virtual room designed on a detailed floor plan. The schemes are computed at 44.1kHz, using large-scale […]

Intra prediction is the most important intensive computing component in H.264 intra frame coder. Its high computational costs give huge pressure to most current embedded programmable processors, especially in real-time HD H.264 video encoding. Stream processing model, an emerging parallel processing model supported by GPUs and most programmable processors, bridges the gap between flexible programmable […]

This paper introduces a multi-user autostereoscopic tabletop display and its associated real-time rendering methods. Tabletop displays that support both multiple viewers and autostereoscopy have been extremely difficult to construct. Our new system is inspired by the "Random Hole Display" design that modified the pattern of openings in a barrier mounted in front of a flat […]

Streak surfaces are among the most important features to support 3D unsteady flow exploration, but they are also among the computationally most demanding. Furthermore, to enable a feature driven analysis of the flow, one is mainly interested in streak surfaces that show separation profiles and thus detect unstable manifolds in the flow. The computation of […]

In this paper we describe a novel method to integrate interactive visual analysis and machine learning to support the insight generation of the user. The suggested approach combines the vast search and processing power of the computer with the superior reasoning and pattern recognition capabilities of the human user. An evolutionary search algorithm has been […]

In this paper we present a volumetric lighting model, which simulates scattering as well as shadowing in order to generate high quality volume renderings. By approximating light transport in inhomogeneous participating media, we are able to come up with an efficient GPU implementation, in order to achieve the desired effects at interactive frame rates. Moreover, […]

This paper presents an algorithm to generate an interpolated view between two camera viewpoints in a fast and automatic way (6-7 fps on a PentIV @ 2.6 GHz, Geforce FX AGP 4). Nothing more than a desktop PC and a set of low end consumer grade cameras are needed to simulate the video stream of […]