
RM - Radon transforM suite of programs.
(3/19/90)
- PURPOSE
- Under the command 'RM' all programs for handling Radon
transforms are found.
- SEE ALSO
- RM 2D [2D Radon Transform]
RM 3D [3D Radon Transformation]
RM COMPL [Complete 2D Radon Transform to 360° range]
RM FT [1D Fourier transform Radon transform]
RM FTINV [1D inverse Fourier transform]
RM PIC [Extract cross-section from 3D Radon transform]
RM AL2 [2D alignment using Radon transforms]
RM SR [Shift-rotate the Fourier transform of a 2D Radon transform]
- USAGE
- .OPERATION: RM
- [RM is a suite of programs to handle Radon transforms. Currently
Radon transforms do not have a separate file type and neither do
their Fourier transforms. The user has to make sure that the
correct type of data are used.
2D Radon transforms (also called Sinograms) are stored with each
line corresponding to one projection angle. The file header
contains the information about the angular sampling in positions
54-56, in the order: (from, to, increment).
3D Radon transforms also are stored with each line belonging
to one angle. Phi increases with the line number, theta with the
slice.
The Fourier transforms of 2D and 3D Radon transforms are stored
line by line in the same position as the real space transform.
Each line is two numbers longer than in real space Radon transform.
Also peak files are used. For alignment of 2D to 3D radon transforms
the angular range of the peakfiles is kept in header positions
48 to 56.
Programs in this suite all transfer the header information. Other
programs in SPIDER may not. If this is the case you have to use
'FI' x.. to extract the header information from one file and
'ST' to set it in the output file (this problem is under discussion
and will be removed).
NOTES
- These programs are under further development. If you intend to use
them please contact M. Radermacher (michael@orkney.ph.albany.edu)
for details about the single commands and recent changes.
- Developed by M. Radermacher.
- SUBROUTINES
- CALLER
- UTIL5
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