Obscurance-based volume rendering framework
M. Ruiz,Imma Boada,Ivan Viola,Stefan Bruckner,Miquel Feixas,Mateu Sbert +5 more
- 10 Aug 2008
- pp 113-120
TL;DR: In this paper, an obscurance-based framework is proposed to obtain realistic and illustrative volume visualizations in an interactive manner, which can include color bleeding effects without additional cost.
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Abstract: Obscurances, from which ambient occlusion is a particular case, is a technology that produces natural-looking lighting effects in a faster way than global illumination. Its application in volume visualization is of special interest since it permits us to generate a high quality rendering at a low cost. In this paper, we propose an obscurancebased framework that allows us to obtain realistic and illustrative volume visualizations in an interactive manner. Obscurances can include color bleeding effects without additional cost. Moreover, we obtain a saliency map from the gradient of obscurances and we show its application to enhance volume visualization and to select the most salient views.
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Citations
Advanced illumination techniques for GPU-based volume raycasting
Markus Hadwiger,Patric Ljung,Christof Rezk Salama,Timo Ropinski +3 more
- 10 Dec 2008
TL;DR: The focus of this course is on advanced illumination techniques which approximate the physically-based light transport more convincingly and are able to interactively create convincing images from volumetric data whose visual quality goes far beyond traditional approaches.
137
A Survey of Volumetric Illumination Techniques for Interactive Volume Rendering
TL;DR: This survey review and classify the existing techniques for advanced volumetric illumination based on their technical realization, their performance behaviour as well as their perceptual capabilities will define future challenges in the area of interactive advanced voluetric illumination.
The Occlusion Spectrum for Volume Classification and Visualization
Carlos D. Correa,Kwan-Liu Ma +1 more
TL;DR: A new method for classifying volume data based on the ambient occlusion of voxel patterns, which leads to better two-dimensional transfer functions that can help classify complex data sets in terms of the spatial relationships among features.
116
About the Influence of Illumination Models on Image Comprehension in Direct Volume Rendering
Florian Lindemann,Timo Ropinski +1 more
TL;DR: A user study in which users have investigated the influence of seven state-of-the-art volumetric illumination models on the spatial perception of volume rendered images and extracted those features which are possibly relevant for the improved spatial comprehension in a relational task.
102
Interactive volumetric lighting simulating scattering and shadowing
Timo Ropinski,Christian Döring,Christof Rezk-Salama +2 more
- 02 Mar 2010
TL;DR: Since the volumetric illumination model is not based on gradient calculation, it is also less sensitive to noise and therefore also applicable to imaging modalities incorporating a higher degree of noise, as for instance magnet resonance tomography or 3D ultrasound.
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