NAME

       phasefilt - phasefilt

DESCRIPTION

       This program is part of GMTSAR.

              phasefilt [GMTSAR] - Apply adaptive non-linear phase filter

              USAGE:

       phasefilt   -imag   imag.grd   -real   real.grd   [-alpha   alpha][-psize   size][-amp1   amp1.grd  -amp2
       amp2.grd][-diff][-v]

              applies Goldstein adaptive filter to phase [output: filtphase.grd] or applies  modified  Goldstein
              adaptive filter to phase [output: filtphase.grd, corrfilt.grd]

       -imag  [required]  GMT  format  file  of  imaginary  component  -real  [required] GMT format file of real
       component -alpha  exponent for filter - usually between 0.0 and 1.5 (0.0 should not filter).

       default: 0.5
              [Goldstein filter] (anything above 1.0 may be excessive)

              alpha < 0 will set alpha = (1 - coherence) [modified Goldstein]

       -psize  patch size for filtering. Must be power of two.

              default: 32

       -amp1           GMT format file of amplitude image of image 1.  Needed  (and  applies)  modified  filter.
       -amp2            GMT  format  file  of  amplitude image of image 2. Needed (and applies) modified filter.
       -diff           Calculate difference between input phase and output  phase.   -complex_out     Write  out
       filtered  real and imaginary (filtphase_real.grd and filtphase_imag.grd) -v              Verbose.  -debug
       Debug.

       example: phasefilt -imag imag.grd -real real.grd -alpha 0.5

              USAGE:

       phasefilt  -imag   imag.grd   -real   real.grd   [-alpha   alpha][-psize   size][-amp1   amp1.grd   -amp2
       amp2.grd][-diff][-v]

              applies  Goldstein  adaptive filter to phase [output: filtphase.grd] or applies modified Goldstein
              adaptive filter to phase [output: filtphase.grd, corrfilt.grd]

       -imag [required] GMT format file of  imaginary  component  -real  [required]  GMT  format  file  of  real
       component -alpha  exponent for filter - usually between 0.0 and 1.5 (0.0 should not filter).

       default: 0.5
              [Goldstein filter] (anything above 1.0 may be excessive)

              alpha < 0 will set alpha = (1 - coherence) [modified Goldstein]

       -psize  patch size for filtering. Must be power of two.

              default: 32

       -amp1            GMT  format  file  of  amplitude image of image 1. Needed (and applies) modified filter.
       -amp2           GMT format file of amplitude image of image 2.  Needed  (and  applies)  modified  filter.
       -diff            Calculate  difference  between  input phase and output phase.  -complex_out    Write out
       filtered real and imaginary (filtphase_real.grd and filtphase_imag.grd) -v              Verbose.   -debug
       Debug.

       example: phasefilt -imag imag.grd -real real.grd -alpha 0.5

phasefilt  phasefilt [GMTSAR] - Apply adaptive n... May 2024                                        PHASEFILT(1)