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) |