Interactive Visualization of the Largest Radioastronomy Cubes

  title={Interactive Visualization of the Largest Radioastronomy Cubes},
  author={Amr H. Hassan and Christopher J. Fluke and David G. Barnes},
Abstract 3D visualization is an important data analysis and knowledge discovery tool, however, interactive visualization of large 3D astronomical datasets poses a challenge for many existing data visualization packages. We present a solution to interactively visualize larger-than-memory 3D astronomical data cubes by utilizing a heterogeneous cluster of CPUs and GPUs. The system partitions the data volume into smaller sub-volumes that are distributed over the rendering workstations. A GPU-based… Expand
A Distributed GPU-Based Framework for Real-Time 3D Volume Rendering of Large Astronomical Data Cubes
Abstract We present a framework to volume-render three-dimensional data cubes interactively using distributed ray-casting and volume-bricking over a cluster of workstations powered by one or moreExpand
3D visualization of astronomy data cubes using immersive displays
An exploratory project aimed at performing immersive 3D visualization of astronomical data, starting with spectral-line radio data cubes from galaxies, and addresses the challenges presented by frontier astronomy experiments, such as the Square Kilometre Array and its precursors. Expand
Scalable desktop visualisation of very large radio astronomy data cubes
Abstract Observation data from radio telescopes is typically stored in three (or higher) dimensional data cubes, the resolution, coverage and size of which continues to grow as ever larger radioExpand
Scientific Visualization in Astronomy: Towards the Petascale Astronomy Era
  • Amr H. Hassan, C. Fluke
  • Physics, Computer Science
  • Publications of the Astronomical Society of Australia
  • 2011
An examination of scientific visualization applications in astronomy through an examination of the literature published during the last two decades identifies the two most active fields for progress and identifies six grand challenges for scientific visualization research in the Petascale Astronomy Era. Expand
Tera-scale Astronomical Data Analysis and Visualization
This work presents their framework as a possible solution to the image analysis and visualization requirements of nextgeneration telescopes, including the forthcoming Square Kilometre Array pathnder radiotelescopes, and shows the framework will scale well to images sized 1 TB and beyond. Expand
Real-time colouring and filtering with graphics shaders
Despite the popularity of the Graphics Processing Unit (GPU) for general purpose computing, one should not forget about the practicality of the GPU for fast scientific visualisation. As astronomersExpand
Visualisation and Analysis Challenges for WALLABY
Focusing on the proposed outcomes of WALLABY (Wide field ASKAP L-Band Legacy All-Sky Blind Survey), and using lessons learnt from HIPASS, issues that astronomers will face with WallABY data cubes are identified. Expand
aflak: Advanced Framework for Learning Astrophysical Knowledge
This thesis describes an extendable graphical framework, aflak (Advanced Framework for Learning Astronomical Knowledge), which provides a collaborative visualization environment for the exploratory analysis of multi-spectral astronomical datasets, with the possibility for astronomers to interactively fine-tune all the interacting parameters. Expand
Real-time volume data three-dimensional display with a modified single-pass multiview rendering method
A modified single-pass multiview rendering method is proposed to achieve real-time large viewing angle volume data three-dimensional (3-D) display that is compatible with the volume drawing pipeline but also robust to different types of 3-D displays based on pixel coding. Expand
Real-time volume data 3D display based on view frustum shear transformation and ray casting integral
An algorithm of view frustum shear transformation and ray casting integral to realize real-time volume data 3D display is presented, compatible with the existing volume drawing pipeline and robust for other types of 3D displays. Expand


A Distributed Data Implementation of the Perspective Shear-Warp Volume Rendering Algorithm for Visualisation of Large Astronomical Cubes
Abstract We describe the first distributed data implementation of the perspective shear-warp volume rendering algorithm and explore its applications to large astronomical data cubes and simulationExpand
GPU-Based Interactive Visualization of Billion Point Cosmological Simulations
A system that uses hierarchical level-of-detailing for the results of cosmological simulations, in order to display visually accurate results without loading in the full dataset (containing over 10 billion points). Expand
Visualizing astronomy data using VRML
VOlume enables the astronomer to visualise data using just a web browser and plug-in and can easily render other important parameter fields such as the sky and redshift coverage of proposed surveys or the sampling of the visibility plane by a rotation-synthesis interferometer. Expand
Visualization-Directed Interactive Model-Fitting to Spectral Data Cubes
The S2PLOT programming library is used to enable intuitive, interactive comparison between 3D models and spectral data, with potential for improved understanding of the spatial configurations and the use of 3D Cartesian shapelets to support quantitative analysis. Expand
Efficient ray tracing of volume data
This paper presents a front-to-back image-order volume-rendering algorithm and discusses two techniques for improving its performance, which employs a pyramid of binary volumes to encode spatial coherence present in the data and uses an opacity threshold to adaptively terminate ray tracing. Expand
GPU-Assisted Raycasting for Cosmological Adaptive Mesh Refinement Simulations
This paper presents an interactive algorithm for artifact-free, high-quality rendering of data defined on this type of grid structure and applies it to render data of time-dependent, three-dimensional galaxy and star formation simulations. Expand
Scalable interactive volume rendering using off-the-shelf components
An application of a second generation implementation of the Sepia architecture (Sepia-2) to interactive volumetric visualization of large rectilinear scalar fields and shows how to extend the single-stage crossbar demonstration system to multi-stage networks in order to support much larger data sizes and higher image resolutions. Expand
Visualizing Multiwavelength Astrophysical Data
This work begins with the processing of the data themselves, uniformizing the representations and units of raw data obtained from varied detector sources, and applies tools to map, convert, color-code, and format the multiwavelength data in forms useful for applications. Expand
High-performance astrophysical visualization using Splotch
A high performance parallelized implementation of Splotch, the previously developed visual data exploration and discovery algorithm for large-scale astrophysical data sets coming from particle-based simulations, improved in order to exploit modern massively parallel architectures, e.g. multicore CPUs and CUDA-enabled GPUs. Expand
Interactive rendering of large volume data sets
A new algorithm for rendering very large volume data sets at interactive frame rates on standard PC hardware and an interactive walkthrough of large data sets such as the visible human on a single off-the-shelf PC is presented. Expand