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RM 3D - Three-dimensional Radon Transform

(3/19/90)

PURPOSE

Computes the Radon transform of a three-dimensional image.

USAGE

.OPERATION: RM 3D

.THREED FILE: VOLUME001
[Enter name of three-dimensional volume]

.3D THRESHOLD/LIFT/NONE (T/L/N): N
[Enter if you wish to (T)hreshold the volume in 3D, (L)ift the minimum up to 0 or (N)one of the above.]

If "T" was answered:

.UPPER,LOWER THRESHOLD:1.1,-0.2
[enter upper and lower threshold]

.AVERAGE 2D THRESHOLD (Y/N): N
[Enter Y if you want to have the intermodiate 2D projections thresholded below their average.]

.RADON TRANSF. SAMPLE DIM.: 64
[Enter line dimension of Radon transform.]

.OUTPUT FILE: THREEDRAD001
[Enter name of output file.]

.ANGULAR INCREMENT THETA,PHI: 10,5
[Enter the angular sampling for the Radon transform. Theta angle around y, phi angle within the intermediate 2D projections.]

.RADIUS OF SPHERICAL MASK: 30
[The volume is masked by a sphere with this radius before the Radon transform is calculated.]

.WRITE INTERMEDIATE PROJECTIONS (Y/N): N
[Allows to write the intermediat 2D projections (a single axis tilt series).]

If "y" was answered:
.OUTPUT FILE: interpro001
[Enter file name template for an output file series. These files will be numbered sequentially, starting with 1.]

NOTES

  1. For more details see: M.Radermacher, Ultramicroscopy 53, 1994, 121-136

  2. Not Distributed!

SUBROUTINES

RADON3D, RADON2E

CALLER

UTIL5

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