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OR 2 - ORientation search for rotation angle in 2D

(2/19/98)

PURPOSE

Determines rotational orientation between two images.

SEE ALSO

OR 2M [Orientation search - 2D, multiple peaks]
OR 3A [Orientation search - 3D, arbitrary center]
OR 3Q [Orientation search - 3D, Eulerian angles]

USAGE

.OPERATION: OR 2,X10,X11

[The optional output parameters X10,X11 specify register positions for the rotation angle and the value of the angular correlation peak found in this operation.]

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

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

.FIRST AND LAST RING: 5,15
[Only rings with the radii in the range 5-15 (in pixel units) will be used.]

.SKIP: 1
[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.]

NOTES

  1. Implemented by: Paul Penczek

SUBROUTINES

ORMD, ORMD_P, ALPRBS, NORMAS, ALRQ, FOURING, CROSRNG, PRB1D, ANGMOR

CALLER

UTIL3

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