Proceedings ArticleDOI
Importance-Driven Volume Rendering
Ivan Viola,Armin Kanitsar,M.E. Groller +2 more
- pp 139-146
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TLDR
This work introduces importance-driven volume rendering as a novel technique for automatic focus and context display of volumetric data as a generalization of cut-away views, which remove or suppress less important parts of a scene to reveal more important underlying information.Abstract:
This paper introduces importance-driven volume rendering as a novel technique for automatic focus and context display of volumetric data. Our technique is a generalization of cut-away views, which - depending on the viewpoint - remove or suppress less important parts of a scene to reveal more important underlying information. We automatize and apply this idea to volumetric data. Each part of the volumetric data is assigned an object importance which encodes visibility priority. This property determines which structures should be readily discernible and which structures are less important. In those image regions, where an object occludes more important structures it is displayed more sparsely than in those areas where no occlusion occurs. Thus the objects of interest are clearly visible. For each object several representations, i.e., levels of sparseness, are specified. The display of an individual object may incorporate different levels of sparseness. The goal is to emphasize important structures and to maximize the information content in the final image. This paper also discusses several possible schemes for level of sparseness specification and different ways how object importance can be composited to determine the final appearance of a particular object.read more
Citations
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Journal ArticleDOI
Importance-Driven Focus of Attention
TL;DR: A concept for automatic focusing on features within a volumetric data set where the user selects a focus, i.e., object of interest, from a set of pre-defined features and automatically determines the most expressive view on this feature.
Proceedings ArticleDOI
VolumeShop: an interactive system for direct volume illustration
Stefan Bruckner,M.E. Groller +1 more
TL;DR: A novel concept for direct multi-object volume visualization which allows control of the appearance of inter-penetrating objects via two-dimensional transfer functions is introduced and a unifying approach to efficiently integrate many non-photorealistic rendering models is presented.
Book
Visualization in Medicine: Theory, Algorithms, and Applications
Bernhard Preim,Dirk Bartz +1 more
TL;DR: Visualization in Medicine is the first book on visualization and its application to problems in medical diagnosis, education, and treatment and describes the algorithms, the applications and their validation, and the clinical evaluation (are the techniques useful?).
Journal ArticleDOI
ClearView: An Interactive Context Preserving Hotspot Visualization Technique
TL;DR: ClearView is a GPU-based, interactive framework for texture-based volume ray-casting that allows users which do not have the visualization skills for this mental exercise to quickly obtain a picture of the data in a very intuitive and user-friendly way.
Journal ArticleDOI
A Taxonomy of 3D Occlusion Management for Visualization
Niklas Elmqvist,Philippas Tsigas +1 more
TL;DR: This paper defines a taxonomy of the design space of occlusion management techniques in an effort to formalize a common terminology and theoretical framework for this class of interactions.
References
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Journal ArticleDOI
Display of surfaces from volume data
TL;DR: In this article, a volume-rendering technique for the display of surfaces from sampled scalar functions of 3D spatial dimensions is discussed, which is not necessary to fit geometric primitives to the sampled data; images are formed by directly shading each sample and projecting it onto the picture plane.
Journal ArticleDOI
Distance transformations in digital images
TL;DR: Six different distance transformations, both old and new, are used for a few different applications, which show both that the choice of distance transformation is important, and that any of the six transformations may be the right choice.
Proceedings ArticleDOI
Suggestive contours for conveying shape
TL;DR: A non-photorealistic rendering system that conveys shape using lines, and shows that suggestive contours can be drawn consistently with true contours, because they anticipate and extend them.
Proceedings ArticleDOI
Semi-automatic generation of transfer functions for direct volume rendering
Gordon Kindlmann,James W. Durkin +1 more
TL;DR: It is demonstrated that for a large class of scalar volume data, namely that where the regions of interest are the boundaries between different materials, a transfer function which makes boundaries readily visible can be generated from the relationship between three quantities.
Proceedings ArticleDOI
Interactive volume rendering using multi-dimensional transfer functions and direct manipulation widgets
TL;DR: This paper demonstrates an important class of three-dimensional transfer functions for scalar data (based on data value, gradient magnitude, and a second directional derivative), and describes a set of direct manipulation widgets which make specifying such transfer functions intuitive and convenient.
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