.TH HE 9.1
.SH NAME
he \- histogram equalization
.SH SYNOPSIS
.B fb/he
[
.I input
]
.SH DESCRIPTION
.I 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.
.SH "SEE ALSO
.IR picfile (9.6)