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LiveSync: Deformed Viewing Spheres for Knowledge-Based Navigation

P. Kohlmann, S. Bruckner, A. Kanitsar, and M. E. Gröller

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.

P. Kohlmann, S. Bruckner, A. Kanitsar, and M. E. Gröller, "LiveSync: Deformed Viewing Spheres for Knowledge-Based Navigation," IEEE Transactions on Visualization and Computer Graphics, vol. 13, iss. 6, p. 1544–1551, 2007. doi:10.1109/TVCG.2007.70576
[BibTeX]

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.
@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",
number = "6",
pages = "1544--1551",
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.",
pdf = "pdfs/Kohlmann-2007-LDV.pdf",
images = "images/Kohlmann-2007-LDV.jpg",
thumbnails = "images/Kohlmann-2007-LDV.png",
youtube = "https://www.youtube.com/watch?v=vzoS6plGxzQ",
affiliation = "tuwien",
doi = "10.1109/TVCG.2007.70576",
event = "IEEE Visualization 2007",
keywords = "linked views, interaction, medical visualization, navigation, viewpoint selection",
location = "Sacramento, California, USA",
url = "//www.cg.tuwien.ac.at/research/publications/2007/kohlmann-2007-livesync/"
}
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