VolumeRendering
Ray Casting
← Optical Effects | ● | Slicing →
For each pixel on the image plane, ray casting performs the following steps:
- Determine viewing ray through eye point and pixel on image plane
- Sample the viewing ray
- from back to front
- with step length 1 voxel
- Accumulate the optical effects for each step
- Accumulated light intensity is decreased by absorption (exponentially with the sampled step length)
- Accumulated light intensity is increased by emission (linearily with the sampled step length)
← Optical Effects | ● | Slicing →