phasefilt1
Phasefilt
Overview
This program is part of GMTSAR.
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phasefilt [GMTSAR] - Apply adaptive non-linear phase filter |
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USAGE: |
phasefilt -imag imag.grd -real real.grd [-alpha alpha][-psize size][-amp1 amp1.grd -amp2 amp2.grd][-diff][-v]
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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
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[Goldstein filter] (anything above 1.0 may be excessive) |
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alpha < 0 will set alpha = (1 - coherence) [modified Goldstein] |
-psize patch size for filtering. Must be power of two.
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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
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USAGE:
phasefilt -imag imag.grd -real real.grd [-alpha alpha][-psize size][-amp1 amp1.grd -amp2 amp2.grd][-diff][-v]
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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