DIRECT HAPTIC RENDERING FROM VOXEL DATASETS USING SCALAR TRIVARIATE B-SPLINE FUNCTION

دانشگاه آزاد اسلامی اصفهان(خوراسگان)

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" DIRECT HAPTIC RENDERING FROM VOXEL DATASETS USING SCALAR TRIVARIATE B-SPLINE FUNCTION "

Document Type	:	Latin Dissertation
Language of Document	:	English
Record Number	:	151329
Doc. No	:	ET23121
Main Entry	:	GANESH SANKARANQRYAQNAN
Title Proper	:	DIRECT HAPTIC RENDERING FROM VOXEL DATASETS USING SCALAR TRIVARIATE B-SPLINE FUNCTION
Note	:	This document is digital این مدرک بصورت الکترونیکی می باشد
Abstract	:	Direct haptic rendering of voxels from an anatomical dataset provides patient-specifichaptic cues that will greatly aid surgical planning and training. Haptic rendering of hardsurfaces has been already studied extensively and several algorithms exist for renderinggeometric primitives. Such methods produce a large a number of polygons requiring severalhours of preprocessing. The algorithm developed in this thesis uses scalar trivariate B-splinefunction for polynomial interpolation with sixty-four neighborhood points, to generateisosurfaces on-the-fly for haptic rendering. This approach gives c2 continuity in surfaces, aswell as better capture of isosurf'e features of the medical dataset. Haptic interaction on hardsurfaces is modeled with spring and damper, and the amount of force applied is proportionalto the depth of immersion of the haptic probe inside the virtual isosurface. The algorithm wastested with voxel cube and CT dataset and the surfaces felt were correct and smooth ashypothesized of the B-spline interpolation..-....,....-...,..tested for theQ1 PC1 bus cardBoth these projects mere sofixare des elopment efforts tonards contributing to dlfferentaspects of Roboucs and lZ1echatronics projects m the Controls and Roboucs Group..
Subject	:	Electericl tess
	:	برق
electronic file name	:	TL46355.pdf
Title and statement of responsibility and	:	DIRECT HAPTIC RENDERING FROM VOXEL DATASETS USING SCALAR TRIVARIATE B-SPLINE FUNCTION [Thesis]