NAME

       mintpy-spatial_filter - Spatial filtering of 2D image.

DESCRIPTION

       usage: spatial_filter.py [-h]

       [-f
       {lowpass_gaussian,highpass_gaussian,lowpass_avg,highpass_avg,sobel,roberts,canny,double_difference}]
              [-p [FILTER_PAR ...]] [-o OUTFILE] file [dset ...]

       Spatial filtering of 2D image.

   positional arguments:
       file   File to be filtered

       dset   optional - dataset(s) to filter (default: []).

   options:
       -h, --help
              show this help message and exit

       -f
       {lowpass_gaussian,highpass_gaussian,lowpass_avg,highpass_avg,sobel,roberts,canny,double_difference}
              Filter   type  (default:  lowpass_gaussian).   Check  Bekaert  et  al.  (2020)  for
              double_difference; Check scikit-image as below for the other filters:

              http://scikit-image.org/docs/dev/api/skimage.filters.html

       -p [FILTER_PAR ...], --filter_par [FILTER_PAR ...]
              Filter parameters for filters. Default:

       Sigma  for low/high pass gaussian filter, default: 3.0

       Kernel Size
              for low/high pass average  filter, default: 5

              Kernel Radius for double difference local and regional filters, default: 1 10

       -o OUTFILE, --outfile OUTFILE
              Output file name.

   references:
              Bekaert, David PS, et al. "InSAR-based detection method for mapping and  monitoring
              slow-moving  landslides  in  remote  regions with steep and mountainous terrain: An
              application   to   Nepal."    Remote   Sensing   of   Environment    249    (2020),
              doi:10.1016/j.rse.2020.111983.

   example:
       spatial_filter.py
              velocity.h5

       spatial_filter.py
              timeseries.h5 -f lowpass_avg       -p 5

       spatial_filter.py
              velocity.h5   -f lowpass_avg       -p 5

       spatial_filter.py
              velocity.h5   -f highpass_gaussian -p 3

       spatial_filter.py
              velocity.h5   -f sobel

       spatial_filter.py
              ifgramStack.h5 unwrapPhase

       spatial_filter.py
              ifgramStack.h5 unwrapPhase -f lowpass_avg -p 5

       spatial_filter.py
              ifgramStack.h5 unwrapPhase -f double_difference -p 1 10