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LiveSync: Deformed Viewing Spheres for Knowledge-Based Navigation

Peter Kohlmann, Stefan Bruckner, Armin Kanitsar, Meister Eduard Gröller

JOURNAL ARTICLE: IEEE Transactions on Visualization and Computer Graphics, vol. 13, no. 6, pp. 1544–1551, 2007.

Abstract

Although real-time interactive volume rendering is available even for very large data sets, this visualization method is used quite rarely in the clinical practice. We suspect this is because it is very complicated and time consuming to adjust the parameters to achieve meaningful results. The clinician has to take care of the appropriate viewpoint, zooming, transfer function setup, clipping planes and other parameters. Because of this, most often only 2D slices of the data set are examined. Our work introduces LiveSync, a new concept to synchronize 2D slice views and volumetric views of medical data sets. Through intuitive picking actions on the slice, the users define the anatomical structures they are interested in. The 3D volumetric view is updated automatically with the goal that the users are provided with expressive result images. To achieve this live synchronization we use a minimal set of derived information without the need for segmented data sets or data-specific pre-computations. The components we consider are the picked point, slice view zoom, patient orientation, viewpoint history, local object shape and visibility. We introduce deformed viewing spheres which encode the viewpoint quality for the components. A combination of these deformed viewing spheres is used to estimate a good viewpoint. Our system provides the physician with synchronized views which help to gain deeper insight into the medical data with minimal user interaction.

Published

IEEE Transactions on Visualization and Computer Graphics

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BibTeX

@ARTICLE{Kohlmann-2007-LDV,
  author = {Peter Kohlmann and Stefan Bruckner and Armin Kanitsar and Meister
	Eduard Gr{\"o}ller},
  title = {LiveSync: Deformed Viewing Spheres for Knowledge-Based Navigation},
  journal = {IEEE Transactions on Visualization and Computer Graphics},
  year = {2007},
  volume = {13},
  pages = {1544--1551},
  number = {6},
  month = oct,
  abstract = {Although real-time interactive volume rendering is available even
	for very large data sets, this visualization method is used quite
	rarely in the clinical practice. We suspect this is because it is
	very complicated and time consuming to adjust the parameters to achieve
	meaningful results. The clinician has to take care of the appropriate
	viewpoint, zooming, transfer function setup, clipping planes and
	other parameters. Because of this, most often only 2D slices of the
	data set are examined. Our work introduces LiveSync, a new concept
	to synchronize 2D slice views and volumetric views of medical data
	sets. Through intuitive picking actions on the slice, the users define
	the anatomical structures they are interested in. The 3D volumetric
	view is updated automatically with the goal that the users are provided
	with expressive result images. To achieve this live synchronization
	we use a minimal set of derived information without the need for
	segmented data sets or data-specific pre-computations. The components
	we consider are the picked point, slice view zoom, patient orientation,
	viewpoint history, local object shape and visibility. We introduce
	deformed viewing spheres which encode the viewpoint quality for the
	components. A combination of these deformed viewing spheres is used
	to estimate a good viewpoint. Our system provides the physician with
	synchronized views which help to gain deeper insight into the medical
	data with minimal user interaction.},
  event = {IEEE Visualization 2007},
  keywords = {linked views, interaction, medical visualization, navigation, viewpoint
	selection},
  location = {Sacramento, California, USA},
  url = {http://www.cg.tuwien.ac.at/research/publications/2007/kohlmann-2007-livesync/}
}






 Last Modified: Stefan Bruckner, 2014-01-17