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http://dx.doi.org/10.15701/kcgs.2016.22.3.1

High quality volume visualization using B-spline interpolation  

Shin, Yongha (Dept. of Computer Engineering, Hansung University)
Kye, Heewon (Dept. of Computer Engineering, Hansung University)
Publication Information
Journal of the Korea Computer Graphics Society / v.22, no.3, 2016 , pp. 1-9 More about this Journal
Abstract
Linear interpolation is a basic sampling method for volume visualization. This method generates good images but sometimes it is inferior to our high expectation because it is encouraged to produce high quality images in the medical applications. In this paper, B spline based tri-cubic interpolation is used for the re-sampling step. The conventional B spline is an approximation method which does not cross control points so that we moved the control points and the curve crosses the original control points. In the rendering step, the empty space leaping is applicable to increase rendering speed. We have to calculate the maximum and minimum values for each block to detect empty space. The convex hull property of B spline enables the values of control points to be used as the maximum and minimum values. As a result, tri-cubic interpolated volume rendering is possible in interactive speed.
Keywords
Direct Volume Rendering; Efficient Ray Casting; B Spline Interpolation;
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Times Cited By KSCI : 1  (Citation Analysis)
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