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In many applications of Direct Volume Rendering (DVR) the importance of a certain material or feature is highly dependent on its relative spatial location. For instance, in the medical diagnostic procedure, the patient's symptoms often lead to specification of features, tissues and organs of particular interest. One such example is pockets of gas which, if found inside the body at abnormal locations,...
The transfer function is the basis of direct volume rendering, and how to design it is also a crucial step for the volume visualization. Multi-dimensional transfer functions are a very effective way to extract materials and their boundaries for scalar data. For many applications, boundaries carry most of the relevant information. Based on the definition of transfer functions, this paper discusses...
Direct volume rendering of scalar fields uses a transfer function to map locally measured data properties to opacities and colors. The domain of the transfer function is typically the one-dimensional space of scalar data values. This paper advances the use of curvature information in multi-dimensional transfer functions, with a methodology for computing high-quality curvature measurements. The proposed...
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