Posts
Dec, 6
AES Encryption Implementation and Analysis on Commodity Graphics Processing Units
Graphics Processing Units (GPUs) present large potential performance gains within stream processing applications over the standard CPU. These performance gains are best realised when high computational intensity is required across large amounts of mostly independent input elements. The GPU’s success in general purpose stream processing has been demonstrated in many diverse fields, though attempts to […]
Dec, 6
Multi-fragment effects on the GPU using the k-buffer
Many interactive rendering algorithms require operations on multiple fragments (i.e., ray intersections) at the same pixel location: however, current Graphics Processing Units (GPUs) capture only a single fragment per pixel. Example effects include transparency, translucency, constructive solid geometry, depth-of-field, direct volume rendering, and isosurface visualization. With current GPUs, programmers implement these effects using multiple passes […]
Dec, 6
Real-time hair simulation on GPU with a dynamic wisp model
In this paper, we present a method for real-time hair animation. We combine a conventional particle-based dynamic simulation and a dynamic hair generation technique. First, the movements of a small number of hairs (coarse model) are simulated using a dynamic simulation. Since this stage uses only a small number of hairs, the simulation is quick. […]
Dec, 6
Dynamic deformation textures: GPU-accelerated simulation of deformable models in contact
We present an efficient algorithm for simulating contacts between deformable bodies with high-resolution surface geometry using dynamic deformation textures, which reformulate the 3D elastoplastic deformation and collision handling on a 2D parametric atlas to reduce the extremely high number of degrees of freedom arising from large contact regions and high-resolution geometry. Such computationally challenging dynamic […]
Dec, 6
Towards multi-GPU support for visualization
At the Institute for Ultrascale Visualization, we are tackling the broad problem of building visualization solutions for the petascale age and beyond. As computing transitions into a new age where scalar solutions no longer improve in performance, and parallel solutions are the vehicle for future performance gains, one key challenge in our effort is to […]
Dec, 6
A Duality Based Approach for Realtime TV-L1 Optical Flow
Variational methods are among the most successful approaches to calculate the optical flow between two image frames. A particularly appealing formulation is based on total variation (TV) regularization and the robust L1 norm in the data fidelity term. This formulation can preserve discontinuities in the flow field and offers an increased robustness against illumination changes, […]
Dec, 6
Real Time Capture of Audio Images and their Use with Video
Spherical microphone arrays provide an ability to compute the acoustical intensity corresponding to different spatial directions in a given frame of audio-data. These intensities may be exhibited as an image and these images updated at a high frame rate to achieve a video stream if the data capture and intensity computations can be performed sufficiently […]
Dec, 5
Using Graphics Hardware for Enhancing Edge and Circle Detection
A broad family of problems in computer vision and image analysis require edge and circle detection. This paper explores the properties of the Hough transform for such tasks, improving them under a novel implementation on commodity graphics hardware. We demonstrate both a faster execution and a more reliable detection under different scenarios and a range […]
Dec, 5
Optical Flow Computation on Compute Unified Device Architecture
In this study, the implementation of an image processing technique on Compute Unified Device Architecture (CUDA) is discussed. CUDA is a new hardware and software architecture developed by NVIDIA Corporation for the generalpurpose computation on graphics processing units. CUDA features an on-chip shared memory with very fast general read and write access, which enables threads […]
Dec, 5
Visibility Sampling on GPU and Applications
In this paper, we show how recent GPUs can be used to very efficiently and conveniently sample the visibility between two surfaces, given a set of occluding triangles. We use bitwise arithmetics to evaluate, encode, and combine the samples blocked by each triangle. In particular, the number of operations is almost independent of the number […]
Dec, 5
Simulation and interaction of fluid dynamics
In the fluid simulation, the fluids and their surroundings may greatly change properties such as shape and temperature simultaneously, and different surroundings would characterize different interactions, which would change the shape and motion of the fluids in different ways. On the other hand, interactions among fluid mixtures of different kinds would generate more comprehensive behavior. […]
