04/15/2003
15-462 Graphics I
24
Volume Ray Casting
•Three
volume rendering techniques
–Volume
ray casting
–Splatting
–3D
texture mapping
•Ray
Casting
–Integrate
color through volume
–Consider
lighting (surfaces?)
–Use
regular x,y,z data grid when possible
–Finite
elements when necessary (e.g., ultrasound)
–3D-rasterize
geometrical primitives