CC MS - Cross Correlation - Masked and normalized ||

PURPOSE

Calculates crosscorrelation coefficients for circular mask. Coefficients are normalized. Image is padded with zeros. Works only for real images (not their Fourier transforms!). Command uses mix-radix FFT - the images need not have power-of-two dimensions.

SEE ALSO

CC	[Cross Correlation ||]
CC N	[Cross Correlation - Normalized ||]

USAGE

.OPERATION: CC MS

.INPUT FILE: PIC001
[Enter the name of the first image file.]

.REFERENCE FILE: PIC001
[Enter the name of the second, reference image file.]

.OUTPUT FILE: CAC001
[Enter name of the file which will contain CC coeffs.]

.MASK RADIUS: 25
[Enter radius of the circular mask which will be centered at NSAM/2+1,NROW/2+1]

.(F)ULL OR (H)ALF OUTPUT FILE: F
[F results in a crosscorrelation function file with dimensions 2*NSAM,2*NROW (useful for mask radius =>MAX(NSAM/4,NROW/4). H results in a crosscorrelation function file with dimensions NSAM,NROW (enough if one is interested only in lower order CCF coeffs. or mask radius is small)]

NOTES

1. See documentation on 'CC' for the location of the origin.

2. For non-masked crosscorrelation function use CC.

3. Command wors for 2D images only.

4. Implemented by Paul Penczek.

SUBROUTINES

MCCF, MCCF_P, FMRS_2, FMRS_1, FFTMCF, CCRS_2

CALLER

CORR1