direct volume rendering co-occurs with 98 other keywords:

transfer function 6x isosurface 3x volume illumination 3x animation 2x interval volume 2x multi-dimensional transfer function 2x preintegration 2x raycasting 2x surface extraction 2x vessel visualization 2x volume visualization 2x 3d texture mapping 1x 3d ultrasound 1x 4d visualization 1x ambient scattering 1x animated lic 1x anisotropic shading 1x anisotropy 1x ant colony optimization 1x antialiasing 1x astronomical visualization 1x bias field 1x classification 1x computed tomography 1x computer graphics 1x curve interpolation 1x curved planar reformation 1x curvilinear grid 1x dichromacy 1x direct manipulation widgets 1x display algorithms 1x distributed volume reconstruction 1x dynamic spect 1x elliptical weighted average filter 1x empty space skipping 1x entropy 1x filtered back-projection 1x filtered shadows 1x flow visualization 1x focus+context technique 1x glyph 1x glyph-based visualization 1x gpu 1x gradient-free shading 1x graphics hardware 1x hardware acceleration 1x health 1x high quality 1x hyperstreamlines 1x image enhancement 1x image recoloring 1x interaction 1x interactive volume exploration 1x irregular grids 1x iso-values 1x k-d tree 1x k-means 1x layer perception 1x level set graphs 1x line integral convolution 1x magnetic resonance imaging 1x medical imaging 1x neighborhood meta-data 1x perspective projection 1x predicate function 1x preintegrated light transport 1x programmable graphics hardware 1x ray coherence 1x ray differentials 1x reconstruction 1x resampling 1x sampling 1x scale-invariant opacity 1x scanline 1x scientific visualization 1x set-cover problem 1x shading 1x soft shadows 1x space leaping 1x spatial conditioning 1x splatting 1x summed area table 1x symmetric tensors 1x tensor visualization 1x ultrasound 1x uncertainty visualization 1x unstructured grid 1x user interface 1x verifiable visualization 1x view suggestion 1x view-dependent 1x viewpoint entropy 1x viewpoint selection 1x virtual colonoscopy 1x volume classification 1x volume rendering 1x volume rendering acceleration 1x volume splatting 1x