Filter in space

gauss_4dfp

spatial frequency domain

Usage: gauss_4dfp <4dfp|conc input> f_half [outroot]

Examples:

gauss_4dfp pt349_study9to9 0.1
gauss_4dfp p1234ho5 0.7 p1234ho5_g7

Options

outroot output file name (default = <inroot>_g<10*f_half>) (only for 4dfp input)
-@<b|l> output big or little endian (default input endian)
-w (wrap) suppress x and y padding
-d differentiate

N.B.: f_half is half frequency in 1/cm
N.B.: FWHM*f_half = (2ln2/pi) = 0.4412712
N.B.: conc files must have extension “conc”

imgblur_4dfp

spatial domain

Usage: imgblur_4dfp [options] <image_file> <FWHM_in_mm>

Examples:

imgblur_4dfp -yz vc345 5.5

Options

-x selective x blur
-y selective y blur
-z selective z blur
-@<b|l> output big or little endian (default input endian)

N.B.: default blur is 3D isotropic

hsphere_4dfp

convolve image with hard sphere kernel

Usage: hsphere_4dfp <file_4dfp> <flt>

Examples:

hsphere_4dfp np1234_zmap_222 5

N.B.: second argument specifies hard sphere radius in mm