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PJ 3Q - ProJect - 3D volume using Eulerian angles

(825/97)

PURPOSE

Computes a projection of a 3D volume according to the three Eulerian angles.

SEE ALSO

PJ 3 [ProJect - 3D volume]
PJ 3E [ProJect - 3D volume using Eulerian angles, fast]
PJ 3T [ProJect - 3D volume using internal Threshold]
PJ AT [ProJect - 3D volume using exponential ATtenuation]
PJ CYL [ProJect - 3D volume onto cylinder]

USAGE

.OPERATION: PJ 3Q

.3-D FILE:
[Enter the name of the file whose projections are to be computed.]

.RADIUS OF THE OBJECT: 26.0
[The projections are computed only for the object inside the sphere of the given radius.]

.SELECTION DOC FILE: sel001
[Enter the name of the document file containing the serial numbers of the projections (from the whole set) that you want to use in the first column. ]

.ANGLES DOC FILE: ANGLES
[Enter the name of the document file containing the Eulerian angles of the projections. The angles have to be given in the order: psi, theta, phi. The meaning of the angles is the same as in command RT 3Q. Projections will be calculated for every entry in the selection document file.]

.ENTER TEMPLATE FOR 2-D PROJECTION: PRJ****
[Enter the template for 2-D projections.]

NOTES

  1. Memory requirements: NSAM*NROW+12*R**3+15*R**2, where R is the radius, but no more than 6*NSAM*NROW+NSAM*NROW*NSLICE

  2. The projection file has always dimensions NSAM x NROW.

  3. For the projection of the whole volume (not the internal sphere only) give the radius larger than any linear dimension of the volume. Please note that usually such projection is incorrect and the program works much longer.

  4. Implemented by: P.Penczek.

SUBROUTINES

PJ3Q, PREPCUB_Q, WRITPRO, WPRO, MOVIPC

CALLER

VTIL2

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