Volume Rendering A volume representation is an extension

Volume Graphics Applications • • • Medical biology (confocal microscopy ( geology (seismic measurements

Volume Graphics Applications • Medical – Professional viewing the MRI data looks at a

Volume Graphics Applications • Medical – After Putting all the slices together. – Adding

Virtual Lights to Enhance Perception • Objects are rendered with shading from "virtual" lights

Rendering Volumes • 3 D datasets could be converted to polygonal representations of one

Volume Graphics Applications • It is quite hard to represent semi-transparent objects such as

Slides: 7

Download presentation

Volume Rendering A volume representation is an extension of a 2 D image to 3 D space. A pixel in 2 D space become a voxel in 3 D space. Voxel

Volume Graphics Applications • • • Medical biology (confocal microscopy ( geology (seismic measurements ( molecular systems (electronic density maps( meteorology (weather prediction simulations ( • chemistry (new material simulations) industry (non-destructive inspections (

Volume Graphics Applications • Medical – Professional viewing the MRI data looks at a sequence of 2 D images, or "slices", created of the subject. – A group of these slices could be considered as one 3 D dataset – MRI images are slices 38 and 54 from 109 slices of size 256 x 256 taken of a human head

Volume Graphics Applications • Medical – After Putting all the slices together. – Adding light and shading – Final Image

Virtual Lights to Enhance Perception • Objects are rendered with shading from "virtual" lights • The intensity and color of voxels used to create the final image • The voxel intensity are used to estimated normals

Rendering Volumes • 3 D datasets could be converted to polygonal representations of one certain feature (surface. ( • Unfortunately this method allows the user to view only one feature (surface. ( • Volume rendering allows the user to see inside objects so the relationships among multiple features can be examined.

Volume Graphics Applications • It is quite hard to represent semi-transparent objects such as amorphous clouds, smoke, fire, even jello using polygons. • How to mix Polygons with volume? ? ?