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Shear-image order ray casting volume rendering

Yin Wu, Vishal Bhatia, Hugh Lauer, Larry Seiler
2003 Proceedings of the 2003 symposium on Interactive 3D graphics - SI3D '03  
This paper describes shear-image order ray casting, a new method for volume rendering.  ...  This method renders sampled data in three dimensions with image quality equivalent to the best of ray-per-pixel volume rendering algorithms (full image order), while at the same time retaining computational  ...  Zhao for their insight into the issues of real-time volume rendering.  ... 
doi:10.1145/641480.641510 dblp:conf/si3d/WuBLS03 fatcat:ythvp5mbmfbwxdjysyu2yctkt4

Shear-image order ray casting volume rendering

Yin Wu, Vishal Bhatia, Hugh Lauer, Larry Seiler
2003 Proceedings of the 2003 symposium on Interactive 3D graphics - SI3D '03  
This paper describes shear-image order ray casting, a new method for volume rendering.  ...  This method renders sampled data in three dimensions with image quality equivalent to the best of ray-per-pixel volume rendering algorithms (full image order), while at the same time retaining computational  ...  Zhao for their insight into the issues of real-time volume rendering.  ... 
doi:10.1145/641508.641510 fatcat:ajspbumgsbdt3ex7wgzjd5nj4m

Object-order template-based approach for stereoscopic volume rendering

Yun-Mo Koo, Cheol-Hi Lee, Yeong-Gil Shin
1999 Journal of Visualization and Computer Animation  
Experimental results show that the image quality of the new algorithm is not only comparable to that of ray casting but also the rendering speed is near that of the interactive shear-warp algorithm employing  ...  This algorithm makes two different templates for each eye and renders two images simultaneously, tracing the volume only once in object-order.  ...  In our previous work, object-order template-based volume rendering [12] , advantages of high-quality template-based ray casting [15, 16] and interactive shear-warp rendering [8, 9, 10] were combined  ... 
doi:10.1002/(sici)1099-1778(199907/09)10:3<133::aid-vis203>3.0.co;2-# fatcat:tptvzkts4bfqtmrqazrsxjee4u

Volumetric Data Rendering on mobile with Raycasting

2020 International journal of modern trends in science and technology  
Mobile computing hardware is rapidly approaching today's desktop-grade hardware capabilities enabling applications of advanced rendering algorithms to environments such as medical care.  ...  In the standard ray casting algorithm used for Volume Rendering, one or more rays are cast for every pixel of the image plane.  ...  Figure 7 : 7 Rendering a volume by casting a set of rays through the volume andsampling each ray at regular intervals.  ... 
doi:10.46501/ijmtstciet13 fatcat:7xu2sheqprcufcj3q3stwq2mam

Shear-Warp Volume Rendering Algorithms Using Linear Level Octree for PC-Based Medical Simulation [chapter]

Zhenlan Wang, Chee-Kong Chui, Chuan-Heng Ang, Wieslaw L. Nowinski
2002 Lecture Notes in Computer Science  
The algorithm benefits 3D volume rendering as well as multi-modality volume rendering. Initial work on comparison and validation of algorithm are done.  ...  We describe a new algorithm for 3D, and potentially higher, volume rendering.  ...  Therefore, the acceleration performance of LLO for volume rendering is often dataset-dependent, and the LLO-based rendered images are similar to the images rendered by brute force ray-casting.  ... 
doi:10.1007/3-540-45787-9_76 fatcat:3uxpe55f6fgsjfpkdovuw7s3ye

Fast visualization of needle motion in volume rendered image for spine biopsy simulator

Keun Ho Kim, Jong Beom Ra, Hyun Wook Park, Seong K. Mun
2000 Medical Imaging 2000: Image Display and Visualization  
the volume rendered organ image frequently.  ...  In this paper, we present an algorithm to combine a volume-rendered image and a surface-rendered needle image. The volume rendering requires a larger amount of computations and memory space.  ...  The proposed method provides a fast rendering for combinational visualization ot' volume-rendered organ inlage and surface-rendered needle image.  ... 
doi:10.1117/12.383044 fatcat:g37uq2kjnjd55cpp5fatw5msh4

Volume-Rendering-Based Interactive 3D Measurement for Quantitative Analysis of 3D Medical Images

Yakang Dai, Jian Zheng, Yuetao Yang, Duojie Kuai, Xiaodong Yang
2013 Computational and Mathematical Methods in Medicine  
Volume rendering is widely used for qualitative visualization of 3D medical images.  ...  In this paper, we introduce a volume-rendering-based interactive 3D measurement framework for quantitative analysis of 3D medical images.  ...  However, the ray-casting, splatting, and shear warp are implemented differently (i.e., image order, object order, and hybrid, resp.).  ... 
doi:10.1155/2013/804573 pmid:23762199 pmcid:PMC3671297 fatcat:ymjwlogu75hytlvcqdlp46xozu

A Rendering Method for Visualization of Medical Data

Fei He, Xia Li
2010 Modern Applied Science  
This article describes the common visualization of medical images and effective optimization method proposed from different perspectives.  ...  The image was rendered by Fovia's High Definition Volume Rendering® engine. The technique of volume ray casting can be derived directly from the rendering equation.  ...  Volume ray casting is classified as image based volume rendering technique, as the computation emanates from the output image, not the input volume data as is the case with object based techniques.  ... 
doi:10.5539/mas.v4n12p126 fatcat:3s77nvjcxnfzjm4mwads4upoe4

Sheared Interpolation and Gradient Estimation for Real-Time Volume Rendering [article]

Hanspeter Pfister, Frank Wessels, Arie Kaufman
1994 Eurographics Workshop on Graphics Hardware  
We describe novel ways of tri-linear interpolation and gradient estimation for a real-time volume rendering system, using coherency between rays.  ...  The rst program, VolRen implements traditional image order volume rendering. Rays are cast from the image plane into the volume and sampled at uniform steps.  ...  The error of using sheared tri-linear interpolation instead of performing image order ray-casting is below 1 :3 relative di erence in Euclidean distance of the resulting image pixels.  ... 
doi:10.2312/eggh/eggh94/070-079 dblp:conf/egh/PfisterWK94 fatcat:amhv66uiurfwpkx6t3mox3lqni

Fast volume rendering using a shear-warp factorization of the viewing transformation

Philippe Lacroute, Marc Levoy
1994 Proceedings of the 21st annual conference on Computer graphics and interactive techniques - SIGGRAPH '94  
First we present a scanline-order volume rendering algorithm that exploits coherence in both the volume data and the image.  ...  We show that scanline-order algorithms are fundamentally more efficient than commonly-used ray casting algorithms because the latter must perform analytic geometry calculations (e.g. intersecting rays  ...  Ray Casting Ray casting algorithms produce an image by casting a ray through the volume for each image pixel and integrating the color and opacity along the ray, as already described in Section 1.1.2  ... 
doi:10.1145/192161.192283 dblp:conf/siggraph/LacrouteL94 fatcat:yz67q4na75eeben46bou3gwupm

Gradient estimation and sheared interpolation for the cube architecture

Hanspeter Pfister, Frank Wessels, Arie Kaufman
1995 Computers & graphics  
We describe novel ways of gradient estimation and tri-linear interpolation for a real-time volume rendering system, using coherency between rays.  ...  We show simulation results that compare the proposed methods to traditional algorithms and present them in the context of Cube-3, a special-purpose architecture capable of rendering 5123 ldbit per voxel  ...  The first program, VolRen implements traditional image order volume rendering. Rays are cast from the image plane into the volume and sampled at uniform steps.  ... 
doi:10.1016/0097-8493(95)00045-3 fatcat:j3h63gse3ng4tbuqbyocgbqlv4

3D RECONSTRUCTION OF BREAST CANCER FROM MAMMOGRAMS USING VOLUME RENDERING TECHNIQUES

Ho Wei Yong, Abdullah Bade, Rajesh Kumar Muniandy
2015 Jurnal Teknologi  
Several steps were proposed for this research which includes data acquisition, volume reconstruction, andvolume rendering.  ...  Graphical abstract Abstract Over the past thirty years, a number of researchers have investigated on 3D organ reconstruction from medical images and there are a few 3D reconstruction software available  ...  There are several direct volume rendering techniques which are widely applied such as volume ray-casting, splatting and shear-warp factorization.  ... 
doi:10.11113/jt.v75.4978 fatcat:gxgogw5mjnbwjfnjgiskzv2nxa

High-quality volume rendering using texture mapping hardware

Frank Dachille, Kevin Kreeger, Baoquan Chen, Ingmar Bitter, Arie Kaufman
1998 Proceedings of the ACM SIGGRAPH/EUROGRAPHICS workshop on Graphics hardware - HWWS '98  
We present a method for volume rendering of regular grids which takes advantage of 3D texture mapping hardware currently available on graphics workstations.  ...  We present two approaches for our method: one which takes advantage of software r ay casting optimizations and another which takes advantage of hardware blending acceleration.  ...  The number of samples along each r a y is also included because the run time of image-order ray casting is typically proportional to the number of samples computed and not the size of the volume.  ... 
doi:10.1145/285305.285315 fatcat:ya6rscqwtza6le4biq6fmsgr24

Mapping High-Fidelity Volume Rendering for Medical Imaging to CPU, GPU and Many-Core Architectures

M. Smelyanskiy, D. Holmes, J. Chhugani, A. Larson, D.M. Carmean, D. Hanson, P. Dubey, K. Augustine, D. Kim, A. Kyker, V.W. Lee, A.D. Nguyen (+2 others)
2009 IEEE Transactions on Visualization and Computer Graphics  
First, we describe the three major categories of volume rendering algorithms and confirm through an imaging scientist-guided evaluation that ray-casting is the most acceptable.  ...  Medical volumetric imaging requires high fidelity, high performance rendering algorithms.  ...  The shear-warp method by Lacroute et al. [16] shears the volume data in order to generate distorted intermediate images.  ... 
doi:10.1109/tvcg.2009.164 pmid:19834234 fatcat:lkmc6adbnjhrld7vihgyssfar4

A Parallel Pipeline Convolution for Perspective Projection in Real-Time Volume Rendering

Masato Ogata, Hanspeter Pfister, Hugh C. Lauer, Yasunori Dohi
2000 The Journal of The Institute of Image Information and Television Engineers  
This paper describes a convolution with a systolic array structure for perspective projection in real-time volume based on the shear-warp method.  ...  The architecture can generate an image of a 2563 voxel dataset V = 256) at 30 Hz with four pipelines.  ...  Each scheme has advantages and disadvantages for structuring realtime volume rendering architectures. 2.1 Sample-order scheme The sample-order scheme is a straightforward implementation of the ray-casting  ... 
doi:10.3169/itej.54.1339 fatcat:uhufsnvzorenxcnin5scuuwzky
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