OR 2M - ORientation search - 2D, rotation, uses polar coords multiple peaks ||

PURPOSE

Determines rotational orientation between two images using resampling into polar coordinates. This is the same as: 'AP REF' or 'AP SH' without the translational search and it only acts on a single pair of images. Mutliple peaks are found and stored in a document file, (See align_overview.html for comparison of 'AP' and 'OR' operations.)
OBSOLETE! USE 'OR R' INSTEAD!

SEE ALSO

OR R	[ORientation search - 2D, rotation, remapping into polar coordinates ||]
OR 3A	[ORientation search - 3D, Eulerian angles, arbitrary center ||]
OR 3Q	[ORientation search - 3D, Eulerian angles ||]

USAGE

.OPERATION: OR 2M [peaks]

[The optional output parameter [peaks] specify register variable to receive the actual number of peaks found.]

.INPUT FILE: UUU001
[Enter name of the image file.]

.REFERENCE FILE: GGG002
[Enter the name of the file containing the reference image; dimensions must correspond to those of the input image.]

.FIRST, LAST RING, & RING STEP: 5,15,1
[Only rings with the radii in the range 5-15 (in pixel units) will be used. If skip=0 or 1 then each ring between 5 and 15 will be taken; for skip=2 every second, and so on.]

.(F)ULL OR (H)ALF CIRCLE: F
[F - full ring (360 degrees) will be used; H - half ring (180 degrees) will be used. Option 'H' is appropriate for rotational search using autocorrelation functions.]

.NUMBER OF PEAKS: 10
[Maximum number of peaks to be found. The actual number of peaks found is returned in the optional register.]

.DOCUMENT FILE: peaks001
[Enter the name of the document file. First register column contains rotation angles found, second column contains corresponding peak values. The entries are sorted according to the peak value in a descending order.]

NOTES

1. Implemented by: Paul Penczek

SUBROUTINES

ORMD, ORMD_P, ALPRBS_Q, RINGWE, APRINGS, NORMAS, ALRQ_MS, FRNGS, APPLYWS, CROSRNG, PRB1D, ANGMOR

CALLER

UTIL3