CT-human body data set rendered using an obscurance-based volume rendering framework.
The obscurance volumes of an aneurism.
Obscurances with color bleeding for a synthetic model, obscurances for the CT-human body data set, and a rendering of this data set using an obscurance-based illumination model.
Color-coded saliency maps corresponding to the most salient views. Illustrative visualizations obtained with a saliency-based opacity modulation.
Different volumes (first row) and their corresponding most structured views (second row). From left to right: (a) a synthetic model, (b) a CT-scan of a patient with hemorrhage, (c) a CT-scan of a tooth and (d) a CT-scan of the human body.
View-based polygonal information for the (a) coffee-cup-and-dish, (b) mini, (c) Hebe and (d) lady of Elche models.
The Figure shows the application of polygonal information as ambient occlusion.
The Xfrog public plants tree model. Composing the ambient occlusion map and the texture of the tree model.
A comparison of a) Crytek’s screen space ambient occlusion, b) containment-test-based ambient occlusion using a step membership function, c) volumetric ambient occlusion.
Mesh saliency for the (a) coffee-cup-and-dish, (b) armadillo, (c) Hebe, and (d) lady of Elche models.
Mesh saliency maps for different resolutions of the armadillo: (a) 7500, (b) 15000 and (c) 60000 triangles.
The six most representative views for the (i) coffee-cup-and-dish, (ii) armadillo and (iii) lady of Elche models using the saliency-based EVMI measure.
Combining viewpoint-based ambient occlusion with a nonphotorealistic technique. The examples use two Coloroid color palettes (left).
Two van Gogh’s paintings. Top: Wheat Field with Cypresses at the Haute Galline Near Eygalieres, June, 1889. Bottom: wheat Field with Cypresses, September, 1889, (c) 1996-2008 David Brooks. Regional and color mutual information maps were calculated using a 25% of mutual information gain.
(i) Two van Gogh paintings (C) 1996-2008. (ii) Binary space partitions for a 25% of mutual information gain.
Evolution of an adaptative decomposition using a partitioning algorithm. A total of 789235 regions are needed to achieve the total information of the paint.
Van Gogh paintings (1996-2008 David Brooks). The mutual information associated with each color is visualized using a thermic scale for each painting.
Comparisong of ambient occlusion techniques. a) containment-test-based ambient occlusion, b)
containment-test-based occlusion with interleaved sampling, c) volumetric ambient occlusion, and d) volumetric ambient occlusion with interleaved sampling.
A tree with stones rendered by volumetric ambient occlusion, taking 12 samples per pixel. a)environment lighting only (115 FPS), b)z-buffer-based occlusions only (112 FPS), c) z-buffer-based occlusions and height field occlusions (80 FPS), and d) z-buffer-based occlusions and environment lighting (70 FPS).
A comparison of a) Crytek’s screen space ambient occlusion, b) containment-test-based ambient occlusion using a step membership function, c) volumetric ambient occlusion.
An scene rendered in 128 seconds (left). The same scene is rendered in 31 seconds (right) using an algorithm for efficient reusing of paths
Original MR and CT brain images (first row) with their corresponding segmentations using excess entropy (second row)
Orthocircles changing its form (see video).
Soft shadow for implicit surfaces.

Models generated by means of CSG operations using implicit surfaces.