Volume ray casting techniques and applications using general purpose computations on graphics proces...

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" Volume ray casting techniques and applications using general purpose computations on graphics processing units "
Michael Romero M. Shaaban

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	54206
Doc. No	:	TL24160
Call number	:	‭1469253‬
Main Entry	:	Michael Romero
Title & Author	:	Volume ray casting techniques and applications using general purpose computations on graphics processing units\ Michael Romero
College	:	Rochester Institute of Technology
Date	:	2009
Degree	:	M.S.
student score	:	2009
Page No	:	140
Abstract	:	Traditional 3D computer graphics focus on rendering the exterior of objects. Volume rendering is a technique used to visualize information corresponding to the interior of an object, commonly used in medical imaging and other fields. Visualization of such data may be accomplished by ray casting; an embarrassingly parallel algorithm also commonly used in ray tracing. There has been growing interest in performing general purpose computations on graphics processing units (GPGPU), which are capable exploiting parallel applications and yielding far greater performance than sequential implementations on CPUs. Modern GPUs allow for rapid acceleration of volume rendering applications, offering affordable high performance visualization systems. This thesis explores volume ray casting performance and visual quality enhancements using the NVIDIA CUDA platform, and demonstrates how high quality volume renderings can be produced with interactive and real time frame rates on modern commodity graphics hardware. A number of techniques are employed in this effort, including early ray termination, super sampling and texture filtering. In a performance comparison of a sequential versus CUDA implementation on high-end hardware, the latter is capable of rendering 60 frames per second with an impressive price-performance ratio heavily favoring GPUs. A number of unique volume rendering applications are explored including multiple volume rendering capable of arbitrary placement and rigid volume registration, hypertexturing and stereoscopic anaglyphs, each greatly enhanced by the real time interaction of volume data. The techniques and applications discussed in this thesis may prove to be invaluable tools in fields such as medical and molecular imaging, flow and scientific visualization, engineering drawing and many others.
Subject	:	Health and environmental sciences; Applied sciences; CUDA; Data visualization; GPGPU; Medical imaging; Ray casting; Volume rendering; Computer Engineering; Computer science; 0464:Computer Engineering; 0984:Computer science; 0574:Medical imaging
Added Entry	:	M. Shaaban
Added Entry	:	Rochester Institute of Technology