psblack - Man Page

psblack < input_PostScript_file > output_PostScript_file

psblack is a filter which reads a PostScript file as input and writes a PostScript file as output.  In the output file the filter forces a black background and scales the intensity values (values with R=G=B) so that any intensity greater than or equal to .8 is mapped to white.   This filter works only on PostScript files produced by ctrans - the CGM translator in the NCAR Graphics software.

ctrans(1NCARG), pswhite(1NCARG)

Copyright (C) 1987-2002
University Corporation for Atmospheric Research
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