HE(9.1)                                                   HE(9.1)

     NAME
          he - histogram equalization

     SYNOPSIS
          fb/he [ input ]

     DESCRIPTION
          He reads a picture file (default standard input) and maps
          its pixel values monotonically to make their histogram as
          even as possible.  The resulting picture file is written to
          standard output.

     SEE ALSO
          picfile(9.6)

     Page 1                       Plan 9             (printed 11/1/25)