Surface rendering for multi-axial cross sections

M. D. Tsai, M. S. Hsieh

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)


This study presents, for the first time, an automatic algorithm for surface rendering of a volume consisting of multi-axial cross sections. In computer graphics, although a medical volume is usually considered to consist of sequential parallel cross sections, multi-axial parallel sections that constitute a multi-axial volume have also been frequently used in recent clinical cases. Herein, a multi-axial volume is assumed to consist of multiple one-axial subvolumes occupying the same space. The discrete ray tracing algorithm that searches for only a hit voxel in a conventional one-axial volume is extended to search for multiple hit voxels in a multi-axial volume. Quadratic isosurfaces reconstructed from the hit voxels are used to approximate the object surface. The rendering results, applied to clinical cases to improve diagnostic rates, indicate that 3D images obtained by applying our methods to multi-axial volumes are more clinically useful than those obtained from one-axial volumes.

Original languageEnglish
Pages (from-to)113-132
Number of pages20
JournalJournal of Information Science and Engineering
Issue number1
Publication statusPublished - Jan 2001


  • Computer graphics
  • Discrete ray tracing
  • Isosurface reconstruction
  • Medical application
  • Volume visualization

ASJC Scopus subject areas

  • Information Systems


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