Projection geometryΒΆ
Plastimatch uses the same internal geometry for the DRR and FDK codes.
The DRR code generates images from a volume, using the following geometry description:
Inputs |
Units |
Default Value |
|---|---|---|
SID |
mm |
1630 |
SAD |
mm |
1000 |
Angle |
degrees |
0 |
Target |
3d position (mm) |
0,0,0 |
Camera |
3d position (mm) |
Computed from Target, Angle and SAD |
CT Zero |
3d position (vox) |
Same as input volume |
Panel resolution |
pixels |
1024 x 768 |
Panel size |
mm |
400 x 300 |
Window |
pixels |
Same as resolution |
NRM |
3d direction |
Computed from Target and Camera |
VUP |
3d direction |
Hard coded to (0,0,1) |
Panel Orientation |
3d direction |
Computed from NRM and VUP |
