Template-based approach for virtual-endoscopic navigation

Martin L. Brady, William E. Higgins, Krishna Ramaswamy

Research output: Contribution to journalConference articlepeer-review


Three-dimensional (3D) digital images arise in many scientific applications. In an application such as virtual endoscopy, interactive navigation through the 3D image data - i.e., the interactive creation of an animated sequence of views - can reveal more information than single static two-dimensional (2D) views. For this case, the 3D image acts as a `virtual environment' representing the imaged structures, and a computer-based system can serve as a tool for navigating through the environment. But such navigation must occur at interactive speeds if it is to be practical. This demands fast volume visualization from arbitrary viewpoints. We present an inexpensive, fast, volume-rendering method that can generate a sequence of views at interactive speeds. The method is based on the approximate discrete Radon transform and the temporal coherence concept. The method forms part of a system that permits dynamic navigation through 3D digital images. We provide pictorial and numerical results illustrating the performance of our method.

Original languageEnglish (US)
Pages (from-to)241-256
Number of pages16
JournalProceedings of SPIE - The International Society for Optical Engineering
StatePublished - Jan 1 1999
EventProceedings of the 1999 Medical Imaging - Physiology and Function from Multidimensional Images - San Diego, CA, USA
Duration: Feb 21 1999Feb 23 1999

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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