Results 241 to 250 of about 471,262 (280)

Adaptive Illumination Sampling for Direct Volume Rendering

Lecture Notes in Computer Science, 2020
Direct volume rendering is used to visualize data from sources such as tomographic imaging devices. The perception of certain structures depends very much on visual cues such as lighting and shadowing. According illumination techniques have been proposed for both surface rendering and volume rendering.
Valentin Kraft, Andrea Schenk
exaly   +2 more sources

Interacting with direct volume rendering

IEEE Computer Graphics and Applications, 2001
Visualization researchers at the San Diego Supercomputer Center have written a program called Volume Explorer, or vx, which performs interactive direct volume rendering on the Volume Pro board. Using OpenGL, the GL Utility Toolkit and the Micro User Interface, vx generates the graphics and facilitates user interaction around the Volume Pro card ...
exaly   +2 more sources

Direct volume rendering of multiple scalar fields

Computer Animation and Virtual Worlds, 1994
AbstractRendering of volume data without forming geometric objects is often termed direct volume rendering. Most of the previously developed methods for this purpose are restricted to display of one scalar variable. This paper presents methods for direct volume rendering of several scalar variables defined at discrete points in three‐dimensional space.
exaly   +2 more sources

Direct volume rendering of curvilinear volumes

Proceedings of the 1990 workshop on Volume visualization, 1990
Direct volume rendering can visualize sampled 3D scalar data as a continuous medium or extract features. However, it is generally slow. Furthermore, most algorithms for direct volume rendering have assumed rectilinear gridded data. This paper discusses methods for using direct volume rendering when the original volume is curvilinear, i.e., is divided ...
Jane Wihelms, Judy Challinger, Naim Alper, Shankar Ramamoorthy, Arsi Vaziri   +4 more
openaire   +1 more source

Direct volume rendering in OpenSG

Computers & Graphics, 2004
Abstract We present a volume rendering framework based on the OpenSG scene graph API. The framework defines volumetric objects that can be included anywhere into an OpenSG scene graph; this allows to easily combine them with polygonally defined objects.
Manfred Weiler, Thomas Klein, Thomas Ertl   +2 more
openaire   +1 more source

Direct rendering of freeform volumes

Computer-Aided Design, 1995
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Y.-K. Chang, Alyn P. Rockwood, Q. He
openaire   +2 more sources

Gaze-directed volume rendering

Proceedings of the 1990 symposium on Interactive 3D graphics - SI3D '90, 1990
We direct our gaze at an object by rotating our eyes or head until the object's projection falls on the fovea, a small region of enhanced spatial acuity near the center of the retina. In this paper, we explore methods for encorporating gaze direction into rendering algorithms.
Marc Levoy, Ross T. Whitaker
openaire   +1 more source

Opacity Peeling for Direct Volume Rendering

Computer Graphics Forum, 2006
Abstract The most important technique to visualize 3D scalar data, as they arise e.g. in medicine from tomographic measurement, is direct volume rendering. A transfer function maps the scalar values to optical properties which are used to solve the integral of light transport in participating media. Many medical data sets, especially MRI data, however,
Christof Rezk-Salama, Andreas Kolb 0001
openaire   +1 more source

Improvement on Direct Volume Rendering

2009 2nd International Congress on Image and Signal Processing, 2009
Direct Volume-Rendering (DVR) is usually used in medical volume visualization, DVR images tend to be over-loaded with the content (blurred images). Thus, in many practical applications simpler techniques which do not rely on complex transfer functions are employed.
Feng Ling, Ling Yang, Zhong-Ke Wang
openaire   +1 more source

A coherent projection approach for direct volume rendering

Proceedings of the 18th annual conference on Computer graphics and interactive techniques, 1991
Direct volume rendering offers the opportunity to visualize all of a three-dimensional sample volume in one image. However, processing such images can be very expensive and good quality high-resolution images are far from interactive. Projection approaches to direct volume rendering process the volume region by region as opposed to ray-casting methods ...
Jane Wilhelms, Allen Van Gelder
openaire   +1 more source