Adjusting Control Parameters of Topology-Accentuated Transfer Functions for Volume Raycasting

Yuriko Takeshima, Shigeo Takahashi, Issei Fujishiro

研究成果: Chapter

抄録

The design of automatic transfer functions for volume rendering is a perennial problem in volume visualization. Over the last three decades, a variety of design methodologies have been proposed. However, sensitive adjustment of related control parameters remains entrusted to users, because rendering conditions, such as the thickness of emphasized subvolumes in the ray direction and the size of a target dataset, differ on a case-by-case basis. Our group previously proposed one-dimensional transfer functions to accentuate topological changes in the scalar field of the target dataset. However, the method forces us to determine the actual control parameter values for the transfer functions in an empirical manner. In this paper, we propose a supplementary mechanism with which to judiciously define an appropriate profile of the opacity values. More specifically, the height and width of the hat opacity transfer functions that accentuate feature isosurfaces are determined according to the number of voxels belonging to the relevant topologically equivalent scalar field interval. The feasibility of the proposed method is evaluated by its application to five kinds of volume datasets.

本文言語English
ホスト出版物のタイトルMathematics and Visualization
出版社Springer Science and Business Media Deutschland GmbH
ページ71-86
ページ数16
DOI
出版ステータスPublished - 2020

出版物シリーズ

名前Mathematics and Visualization
ISSN(印刷版)1612-3786
ISSN(電子版)2197-666X

ASJC Scopus subject areas

  • Modelling and Simulation
  • Geometry and Topology
  • Computer Graphics and Computer-Aided Design
  • Applied Mathematics

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