Description: C-ray is a volume raycasting software optimized for Cell Broadband Engine. It is aimed at achieving interactive volume rendering on a very large volumetric data by taking advantage of all the strong features of the Cell B.E. Platform: |
Size: 8187278 |
Author:mhp |
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Description: The Volume Fog sample shows the per-pixel density volumetric rendering
technique. The fog volume is modeled as a polygonal mesh, and the
density of the fog at every pixel is computed by subtracting the front
side of the fog volume from the back side. The fog is mixed with the
scene by accumulating an in/out test at every pixel -- that is, back-facing
fog polygons will add, while front-facing ones will subtract. If the value
is non zero, then the scene intersects the fog and the scene s depth value
is used. In order to get better results, this demo uses 12 bits of precision
by encoding high and low bits in different color channels. Platform: |
Size: 28923 |
Author:姚俊光 |
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Description: C-ray is a volume raycasting software optimized for Cell Broadband Engine. It is aimed at achieving interactive volume rendering on a very large volumetric data by taking advantage of all the strong features of the Cell B.E. Platform: |
Size: 8186880 |
Author:mhp |
Hits:
Description: The Volume Fog sample shows the per-pixel density volumetric rendering
technique. The fog volume is modeled as a polygonal mesh, and the
density of the fog at every pixel is computed by subtracting the front
side of the fog volume from the back side. The fog is mixed with the
scene by accumulating an in/out test at every pixel -- that is, back-facing
fog polygons will add, while front-facing ones will subtract. If the value
is non zero, then the scene intersects the fog and the scene s depth value
is used. In order to get better results, this demo uses 12 bits of precision
by encoding high and low bits in different color channels. -The Volume Fog sample shows the per-pixel density volumetric rendering technique. The fog volume is modeled as a polygonal mesh, and the density of the fog at every pixel is computed by subtracting the front side of the fog volume from the back side. The fog is mixed with the scene by accumulating an in/out test at every pixel that is, back-facing fog polygons will add, while front-facing ones will subtract. If the value is non zero, then the scene intersects the fog and the scene s depth value is used. In order to get better results, this demo uses 12 bits of precision by encoding high and low bits in different color channels. Platform: |
Size: 28672 |
Author:Phoebuson Ryao |
Hits:
Description: 基于体渲染的烟雾模拟程序，用到shader 2.0,非常具有真实感-Based on the volumetric rendering the smoke simulation program, used in shader 2.0, very realistic Platform: |
Size: 6991872 |
Author:于亚莉 |
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Description: 建立一个透明物体上有污点的模型，可以模拟玻璃上有污点的图象-Rendering of clean transparent objects has been well studied in computer graphics. However, real-world transparent
objects are seldom clean—their surfaces have a variety of contaminants such as dust, dirt, and lipids. These
contaminants produce a number of complex volumetric scattering effects that must be taken into account when
creating photorealistic renderings. In this paper, we take a step toward modeling and rendering these effects. We
make the assumption that the contaminant is an optically thin layer and construct an analytic model following
results in radiative transport theory and computer graphics. Moreover, the spatial textures created by the different
types of contamination are also important in achieving visual realism. To this end, we measure the spatially
varying thicknesses and the scattering parameters of a number of glass panes with various types of dust, dirt, and
lipids. We also develop a simple interactive synthesis tool to create novel instances of the me Platform: |
Size: 746496 |
Author:mengquann |
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Description: 医学图像配准，2D_3D医学图像配准论文-In 2D-3D Medical Image Registration (MIR), preoperative 3D CT images are registered
with intraoperative 2D X-rays images obtained by fluoroscopy or Electronic Portal Imag-
ing Devices (EPID). 2D-3D MIR is established by computing Digitally Reconstructed Ra-
diograph (DRR) images rendered from the volumetric data and is useful in many med-
ical procedures where surgical planning is undertaken using volumetric data prior to
treatment, such as in radiation therapy treatment and image guide surgery. The conven-
tional approach used to render DRR images is a computationally expensive process and
forms a bottleneck in 2D-3D MIR. This paper evaluates the registration performance of
a 2D-3D MIR system which attempts to improve the rendering performance by reduc-
ing the number of intersections between the rays cast and internal spaces within the CT
volume by using an Octree compression. An Octree compressed CT volume comprises
fewer internal spaces, each containing voxels which shar Platform: |
Size: 1527808 |
Author:刘坤 |
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Description: A Survey of Volumetric Illumination Techniques
for Interactive Volume Rendering
体可视化中的光照计算技术-Interactive volume rendering in its standard formulation has become an increasingly important tool in many
application domains. In recent years several advanced volumetric illumination techniques to be used in interactive
scenarios have been proposed. These techniques claim to have perceptual benefits as well as being capable of
producing more realistic volume rendered images. Naturally, they cover a wide spectrum of illumination effects,
including varying shading and scattering effects. In this survey, we review and classify the existing techniques for
advanced volumetric illumination. The classification will be conducted based on their technical realization, their
performance behavior as well as their perceptual capabilities. Based on the limitations revealed in this review, we
will define future challenges in the area of interactive advanced volumetric illumination. Platform: |
Size: 18441216 |
Author:commy |
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Search - rendering volumetric