All
renditions (C) Wolfram R. Jarisch, 2003

Historical Studies 1991 - 1993

Test on a semi-sphere, reconstruction from a mathematical model.

The model consists of a hollow semi-sphere with a small full sphere at its center.

Observe that these features are well represented in the 3-D reconstruction, although with some artifacts.

This particular test is concerned with the evaluation of the spatial long-range dependencies of density estimates

and the ability to use as few as 4 projective cone-beam views to achieve meaningful density estimates.

The reconstruction was computed on an Intel 860 processor at CTI with a resolution of about 180-cubed voxels.

The surface renditions were computed on a SUN station. Note:*black
surface patches* are due to defects in the

*rendition algorithm* provided on that system and are not
a result of the 3-D reconstruction.

Historical Studies 1991 - 1993

Test on a semi-sphere, reconstruction from a mathematical model.

The model consists of a hollow semi-sphere with a small full sphere at its center.

Observe that these features are well represented in the 3-D reconstruction, although with some artifacts.

This particular test is concerned with the evaluation of the spatial long-range dependencies of density estimates

and the ability to use as few as 4 projective cone-beam views to achieve meaningful density estimates.

The reconstruction was computed on an Intel 860 processor at CTI with a resolution of about 180-cubed voxels.

The surface renditions were computed on a SUN station. Note: