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Posts

Jun, 26

Improving processing time for visual measurements of displacements of IPMC actuators using CUDA

A Graphics Processing Unit (GPU) based measuring system which is used for processing images from a camera to provide information about displacement is presented in this work. The proposed approach has been developed for measuring small movements of micro robotic systems based on synthetic IPMC (Ionic Polymer Metal Composites) materials using CUDA (Compute Unified Device […]
Jun, 26

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

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 reduce user shadowing issues while still producing large images. However, wide-angle projectors exhibit severe image distortion requiring the image generator to correctively pre-distort the output image. […]
Jun, 26

A Low-Cost Solution For Excavator Simulation With Realistic Visual Effect

A low-cost excavator simulator has been developed in this paper for training human operators and evaluating control strategies for heavy-duty hydraulic machines. In such a system, the operator controls a virtual excavator by means of a joystick while experiencing realistic operating feelings through force feedback, graphical displays, and sound effects in virtual operating environments. A […]
Jun, 26

Importance-Driven Particle Techniques for Flow Visualization

Particle tracing has been established as a powerful visualization technique to show the dynamics of 3D flows. Particle tracing in 3D, however, quickly overextends the viewer due to the massive amount of visual information that is typically produced by this technique. In this paper, we present strategies to reduce this amount at the same time […]
Jun, 26

Visual Simulation of Breaking Waves in Shallow Water

We introduce a composite method for simulation and rendering of breaking waves in computer graphics applications. The method generated not only a simple wave belt like previous work, but also a manipulative model by influence of the wind. The particle system we adopted combine POINT primitive as basic particle and fat particle as characteristics particle […]
Jun, 26

Kd-Jump: a Path-Preserving Stackless Traversal for Faster Isosurface Raytracing on GPUs

Stackless traversal techniques are often used to circumvent memory bottlenecks by avoiding a stack and replacing return traversal with extra computation. This paper addresses whether the stackless traversal approaches are useful on newer hardware and technology (such as CUDA). To this end, we present a novel stackless approach for implicit kd-trees, which exploits the benefits […]
Jun, 26

A real-time coarse-to-fine multiview capture system for all-in-focus rendering on a light-field display

We present an end-to-end system capable of real-time capturing and displaying with full horizontal parallax high-quality 3D video contents on a cluster-driven multiprojector light-field display. The capture component is an array of low-cost USB cameras connected to a single PC. RawM-JPEG data coming fromthe software-synchronized cameras are multicast over Gigabit Ethernet to the back-end nodes […]
Jun, 26

Acceleration of the Method of Moments Calculations by Using Graphics Processing Units

The graphics processing unit (GPU) has been used to speed up the conventional method of moments (MoM) calculations for electromagnetic scattering from arbitrary three-dimensional conducting objects. The acceleration ratio of filling impedance matrix has reached 30, while the total acceleration ratio (including iteration) is about 20. Moreover, a matrix splitting algorithm is developed to break […]
Jun, 26

CUDA-based acceleration and algorithm refinement for volume image registration

In this paper, we propose a GPU-based acceleration method to speed up volume image registration using Compute Unified Device Architecture(CUDA). A novel CUDA-based method for joint histogram computation is introduced in this paper, which is also valuable for 2D image registration and other general graphics applications. Additionally, an algorithm refinement is proposed to improve the […]
Jun, 25

Parallel Processing for Normal Mixture Models of Hyperspectral Data Using a Graphics Processor

Multivariate normal mixture models, where a complex statistical distribution is represented by a weighted sum of several multivariate normal probability distributions, have many potential applications including anomaly detection (AD) in hyperspectral (HS) images. The high computational cost of mixture models requires hardware and/or algorithmic acceleration to make AD run in real time. In this paper […]
Jun, 25

Ringing: Frugal Subdivision of Curves and Surfaces

Ringing reduces the working memory needed during the rendering of subdivision curves, surfaces, and animations. For example, it only stores 4D vertices when rendering the dth level of subdivision of a polygon using four-point, cubic, or quintic B-spline subdivision masks. Ringing can be used on CPUs and GPUs.
Jun, 25

Fast High-Quality Volume Ray Casting with Virtual Samplings

Volume ray-casting with a higher order reconstruction filter and/or a higher sampling rate has been adopted in direct volume rendering frameworks to provide a smooth reconstruction of the volume scalar and/or to reduce artifacts when the combined frequency of the volume and transfer function is high. While it enables high-quality volume rendering, it cannot support […]
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