Provided by: ossim-core_2.6.2-1_amd64 bug


       ossim-viewshed - ossim-viewshed


       ossim-viewshed [options] <obs_lat> <obs_lon> <output-image>


       --dem <filename>
              Specifies  the  input  DEM  filename.  If  none provided, the elevation database is
              referenced as specified in prefs file

              Will disable the elevation

              Takes an argument. Arguments are ALL, WARN, NOTICE, INFO,  FATAL,  DEBUG.   If  you
              want  multiple disables then just do multiple --disable-notify on the command line.
              All argument are case insensitive.  Default is all are enabled.

              Will disable the plugin loader

       --fov <start> <end>
              Optional arguments specifying the field-of-view boundary azimuths (in degrees).  By
              default,  a  360 deg FOV is computed. The arc is taken clockwise from start to end,
              so for a FOV of 225 deg from W, through N to SE, start=270 and end=135

       --gsd <meters>
              Specifies output GSD in meters. Defaults to the same resolution as input DEM.

       --hgt-of-eye <meters>
              Specifies the observers height-of-eye above the terrain in meters. Defaults to  1.5

       --horizon <filename>
              Experimental.  Outputs the max elevation angles for all azimuths to <filename>, for
              horizon profiling.

       --lut <filename>
              Specifies the optional lookup table filename for  mapping  the  single-band  output
              image  to  an  RGB. The LUT provided must be in the ossimIndexToRgbLutFilter format
              and must handle the three output viewshed values (see --values option).

              takes a logfile as  an  argument.   All  output  messages  are  redirected  to  the
              specified log file.  By default there is no log file and all messages are enabled.

       --radius <meters>
              Specifies  max  visibility  in  meters.  Required  unless --size is specified. This
              option constrains output to a circle, similar to a radar display

              Causes applications API to be output as JSON to stdout. Accepts  optional  filename
              to store JSON output.

       --reticle <int>
              Specifies the size of the reticle at the observerlocation in pixels from the center
              (i.e., the radius of the reticle). Defaults to 2. A value of 0 hides  the  reticle.
              See --values option for setting reticle color.

              For engineering/debug purposes

       --size <int>
              Instead  of  a  visibility  radius, directly specifies the dimensions of the output
              product in pixels (output is square). Required unless --radius is specified.

              Causes a product summary to be output to the console.

       --tbs  "Thread By Sector". For engineering/debug purposes

       --threads <n>
              Number of threads. Defaults to  use  all  available  cores.  For  engineering/debug

       --values <int int int>
              Specifies  the  pixel  values  (0-255)  for the visible, hidden and reticle pixels,
              respectively. Defaults to  visible=null  (0),  hidden=128,  and  observer  position
              reticle is highlighted with 255.

       -K     specify individual keywords to add to the preferences keyword list: name=value

       -P     specify a preference file to load

       -T     specify  the classes to trace, ex: ossimInit|ossimImage.*  will trace ossimInit and
              all ossimImage classes

       Computes the viewshed for the given viewpt coordinates. The output is a binary image  with
       0 representing hidden points, and 1 representing visible points.


       ossim-viewshed --radius 50
              28.0 -80.5 output-hlz.tif

       ossim-viewshed --size 1024
              28.0 -80.5 output-hlz.tif

       An alternate command line provides switch for observer lat and lon:

       ossim-viewshed --rlz 25 --observer 28.0 -80.5


       The  full documentation for ossim-viewshed is maintained as a Texinfo manual.  If the info
       and ossim-viewshed programs are properly installed at your site, the command

              info ossim-viewshed

       should give you access to the complete manual.