Image segmentation and gain field correction

partitiond_gfc_4dfp

intensity inhomogeneity correction assuming 3D parabolic gain field

Usage: partitiond_gfc_4dfp <imgroot>

Examples:

partitiond_gfc_4dfp vc1440_mpr_n4_111_t88.4dfp

Options

-g	freeze initial gain field
-n	force negative definite quadratic gain field
-v	verbose mode
-p<flt>	pre-blur by specified FWHM in mm
-b<flt>	specify bandwidth in intensity units (default=200.0)
-e<flt>	specify drms convergence criterion (default=0.000200)
-i<flt>	specify sigma (default=1.000000)
-l<int>	specify iteration limit (default=8)
-m<flt>	specify gfc computation region count (default=24)
-s<flt>	specify space constant in mm (default=4.000000)
-z<flt>	specify background threshold (default=180.0)
-M<flt>	specify maximum correction factor
-r<flt>[to<flt>]	specify gfc range (default=0.0to10000.0)