Posts
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 […]
Jun, 25
Hierarchical Line Integration
This paper presents an acceleration scheme for the numerical computation of sets of trajectories in vector fields or iterated solutions in maps, possibly with simultaneous evaluation of quantities along the curves such as integrals or extrema. It addresses cases with a dense evaluation on the domain, where straightforward approaches are subject to redundant calculations. These […]
Jun, 25
Simulation of shallow water based on shader
We introduce a method for simulate and render of ocean wave by vertex and fragment processing. The method is divided into four stages: wave generation, surface tessellation, optical simulation, and water surface rendering. Our implement not only is a simple wave by influence of terrain like previous work, but also a manipulative model by influence […]
Jun, 25
Acceleration of PET Monte Carlo simulation using the graphics hardware ray-tracing engine
GRAY (High Energy Photon Ray Tracer) is a Monte-Carlo ray-driven high energy photon transport engine for PET and SPECT applications that supports complex mesh based primitives for source distributions, phantom shapes, and detector geometries. Ray tracing is a technique used in computer graphics to render scenes with realistic light properties. We adapted this technique to […]
Jun, 25
Accelerating Regular LDPC Code Decoders on GPUs
Modern active and passive satellite and airborne sensors with higher temporal, spectral and spatial resolutions for Earth remote sensing result in a significant increase in data volume. This poses a challenge for data transmission over error-prone wireless links to a ground receiving station. Low-density parity-check (LDPC) codes have been adopted in modern communication systems for […]
Jun, 25
High-speed parallel wavelet algorithm based on CUDA and its application in three-dimensional surface texture analysis
A new efficient parallel wavelet algorithm was presented in order to speed up wavelet transform in three-dimensional surface texture analysis. It is based NVIDIA’s CUDA (Compute Unified Device Architecture), a new general purpose parallel programming model and instruction set architecture that leverage computational problems on GPU more efficient than CPU. Compared with CPU, GPU has […]
Jun, 25
A two-level simulator for spaceborne SAR
A novel two-level simulator for spaceborne Synthetic Aperture Radar (SAR) is presented in this paper, and this simulator consists of two different simulation levels: the raw signal level and the image level and the implementations are discussed in detail. For the raw signal level, a new model with higher computation efficiency based on Graphic Processor […]
Jun, 25
Real-time 3D reconstruction for mobile robot using catadioptric cameras
This paper presents a 3-second 3D reconstruction algorithm able to process a dense geometric approximation of the surrounding environment. Image acquisition is done by a stereoscopic panoramic system with two color catadioptric cameras mounted on a mobile robot. An algorithm running on a Graphical Processing Unit (GPU) processes the 3D reconstruction in real-time. As the […]
Jun, 24
Optimized GPU Framework for Ultrasound Strain Imaging
A GPU framework for ultrasound strain image based on the motion tracking with phase zero method and strain estimation by least squares method is presented. The required signal processing is computationally intensive, involving cross correlation, box filter, and sum of squares, etc. In this paper, we describe the use of a graphics processing unit for […]
Jun, 24
GPU-accelerated synthesis of echo generators
We deal with an approach to the design of array based, 2D echo generators. The radiating elements are located on non-uniform grids and the Quiet Zone (QZ) design specifications are enforced at non uniformly spaced sampling locations. The radiating element positions and QZ design specification matching points are determined by a singular values optimization process. […]
Jun, 24
A GPU-Based 3D Image Synthesizing Method for Real-Time Multiview Autostereoscopic Displays
Multiview autostereoscopic systems display three-dimensional (3D) images interleaved from parallax images to provide adequate viewing zones for viewers. A 3D image synthesizing method based on parallel processing with Graphic Processing Unit (GPU) is proposed to accelerate the image synthesizing for real-time autostereoscopic displays. The GPU-based 3D image synthesizing method is implemented with Direct3D Application Programming […]
Jun, 24
Fast cell detection in high-throughput imagery using GPU-accelerated machine learning
High-throughput microscopy allows fast imaging of large tissue samples, producing an unprecedented amount of sub-cellular information. The size and complexity of these data sets often out-scale current reconstruction algorithms. Overcoming this computational bottleneck requires extensive parallel processing and scalable algorithms. As high-throughput imaging techniques move into main stream research, processing must also be inexpensive and […]
