Results 1 - 10 of 1,159

Rendering of Surfaces from Volume Data

by Marc Levoy - IEEE COMPUTER GRAPHICS AND APPLICATIONS , 1988
"... The application of volume rendering techniques to the display of surfaces from sampled scalar functions of three spatial dimensions is explored. Fitting of geometric primitives to the sampled data is not required. Images are formed by directly shading each sample and projecting it onto the picture ..."
Abstract - Cited by 875 (12 self) - Add to MetaCart
The application of volume rendering techniques to the display of surfaces from sampled scalar functions of three spatial dimensions is explored. Fitting of geometric primitives to the sampled data is not required. Images are formed by directly shading each sample and projecting it onto

Robust Registration of Coarse Binary Volume Models

by Jochen Wingbermühle - In Proceedings of the International Conference on Pattern Recognition , 2000
"... In this paper we propose a robust approach to register two coarse binary volume models. The presented method is based on a combination of maximising the spatial crosscorrelation and an extended version of the iterative closest point algorithm (ICP). During an iterative optimisation the cross-correla ..."
Abstract - Cited by 5 (0 self) - Add to MetaCart
In this paper we propose a robust approach to register two coarse binary volume models. The presented method is based on a combination of maximising the spatial crosscorrelation and an extended version of the iterative closest point algorithm (ICP). During an iterative optimisation the cross

Efficient ray tracing of volume data

by Marc Levoy - ACM Transactions on Graphics , 1990
"... Volume rendering is a technique for visualizing sampled scalar or vector fields of three spatial dimensions without fitting geometric primitives to the data. A subset of these techniques generates images by computing 2-D projections of a colored semitransparent volume, where the color and opacity at ..."
Abstract - Cited by 392 (5 self) - Add to MetaCart
performance. The first technique employs a pyramid of binary volumes to encode spatial coherence present in the data, and the second technique uses an opacity threshold to adaptively terminate ray tracing. Although the actual time saved depends on the data, speedups of an order of magnitude have been observed

1 Surface Extraction from Binary Volumes with Higher-Order Smoothness

by Victor Lempitsky
"... in the form of binary volumes, where a binary value indicates whether a voxel is associated with the interior or the exterior. For visualization purpose, it is often desirable to convert a binary volume into a surface representation. Straightforward extraction of the median isosurfaces for binary vo ..."
Abstract - Cited by 8 (0 self) - Add to MetaCart
in the form of binary volumes, where a binary value indicates whether a voxel is associated with the interior or the exterior. For visualization purpose, it is often desirable to convert a binary volume into a surface representation. Straightforward extraction of the median isosurfaces for binary

Tricubic interpolation of discrete surfaces for binary volumes

by Arie Kadosh, Daniel Cohen-or, Roni Yagel - IEEE Trans. Vis. Comput. Graph , 2003
"... Abstract—Binary-defined 3D objects are common in volume graphics and medical imaging as a result of voxelization algorithms, segmentation methods, and binary operations such as clipping. Traditionally, renderings of binary objects suffer from severe image quality problems, especially when one tries ..."
Abstract - Cited by 5 (0 self) - Add to MetaCart
Abstract—Binary-defined 3D objects are common in volume graphics and medical imaging as a result of voxelization algorithms, segmentation methods, and binary operations such as clipping. Traditionally, renderings of binary objects suffer from severe image quality problems, especially when one tries

Reducing Artifacts in Surface Meshes Extracted from Binary Volumes Ragnar Bade

by Bernhard Preim
"... We present a mesh filtering method for surfaces extracted from binary volume data which guarantees a smooth and correct representation of the original binary sampled surface, even if the original volume data is inaccessible or unknown. This method reduces the typical block and staircase artifacts bu ..."
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We present a mesh filtering method for surfaces extracted from binary volume data which guarantees a smooth and correct representation of the original binary sampled surface, even if the original volume data is inaccessible or unknown. This method reduces the typical block and staircase artifacts

Final Manuscript Paper No: TVC99-1029 Binary Volume Rendering using the Slice-based Binary Shell

by Bo Hyoung Kim, Jinwook Seo, Yeong Gil Shin, Correspondence Bo, Hyoung Kim
"... This paper presents a new data structure, Slice-based Binary Shell (SBS), for efficient manipulation and rendering of binary volume data. Since SBS stores only surface voxels with selected attributes of the voxels in a slice-based data structure that allows direct access to the voxels, it shows high ..."
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This paper presents a new data structure, Slice-based Binary Shell (SBS), for efficient manipulation and rendering of binary volume data. Since SBS stores only surface voxels with selected attributes of the voxels in a slice-based data structure that allows direct access to the voxels, it shows

Dynamic Texture Recognition Using Local Binary Patterns with an Application to Facial Expressions

by Guoying Zhao, Matti Pietikäinen - IEEE TRANSACTIONS ON PATTERN ANALYSIS AND MACHINE INTELLIGENCE , 2007
"... Dynamic texture is an extension of texture to the temporal domain. Description and recognition of dynamic textures have attracted growing attention. In this paper, a novel approach for recognizing dynamic textures is proposed and its simplifications and extensions to facial image analysis are also ..."
Abstract - Cited by 291 (35 self) - Add to MetaCart
are also considered. First, the textures are modeled with volume local binary patterns (VLBP), which are an extension of the LBP operator widely used in ordinary texture analysis, combining motion and appearance. To make the approach computationally simple and easy to extend, only the co

Parallel Volume Rendering Using Binary-Swap Image Composition

by Kwan-liu Ma, James S. Painter, Charles D. Hansen, Michael F. Krogh - IEEE Computer Graphics and Applications , 1994
"... This paper presents a divide-and-conquer ray-traced volume rendering algorithm and a parallel image compositing method, along with their implementation and performance on the Connection Machine CM-5, and networked workstations. This algorithm distributes both the data and the computations to individ ..."
Abstract - Cited by 152 (35 self) - Add to MetaCart
This paper presents a divide-and-conquer ray-traced volume rendering algorithm and a parallel image compositing method, along with their implementation and performance on the Connection Machine CM-5, and networked workstations. This algorithm distributes both the data and the computations

Volume Regularization for Binary Classification

by Koby Crammer, Tal Wagner
"... We introduce a large-volume box classification for binary prediction, which maintains a subset of weight vectors, and specifically axis-aligned boxes. Our learning algorithm seeks for a box of large volume that contains “simple ” weight vectors which most of are accurate on the training set. Two ver ..."
Abstract - Cited by 1 (1 self) - Add to MetaCart
We introduce a large-volume box classification for binary prediction, which maintains a subset of weight vectors, and specifically axis-aligned boxes. Our learning algorithm seeks for a box of large volume that contains “simple ” weight vectors which most of are accurate on the training set. Two
Results 1 - 10 of 1,159