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.\" First parameter, NAME, should be all caps
.\" Second parameter, SECTION, should be 1-8, maybe w/ subsection
.\" other parameters are allowed: see man(7), man(1)
.TH selthresh 1 "2002-09-07"
.\" Please adjust this date whenever revising the manpage.
.\"
.\" Some roff macros, for reference:
.\" .nh disable hyphenation
.\" .hy enable hyphenation
.\" .ad l left justify
.\" .ad b justify to both left and right margins
.\" .nf disable filling
.\" .fi enable filling
.\" .br insert line break
.\" .sp <n> insert n+1 empty lines
.\" for manpage-specific macros, see man(7)
.SH NAME
selthresh.h \- Simple perl script to choose the "best" threshold when converting PGM to PBM.
.SH SYNOPSIS
.B selthresh.h
.RI [-y res] [-w path] [-l ll rl] file1.pgm [file2.pgm ...]
.br
.SH DESCRIPTION
This manual page documents briefly the
.B selthresh
command.
This manual page was written for the Debian distribution
because the original program does not have a manual page.
.br
.SH OPTIONS
These programs follow the usual GNU command line syntax, with long
options starting with two dashes (`-').
A summary of options is included below.
For a complete description, see the Info files.
.TP
.B \-y res
Sets the resolution (defauts to 600 dpi)
.TP
.B \-v
Sets the path of the work directory (defaults to "./")
.TP
.B \-l ll rl
Sets the interval to analyse (defaults to [0.4,0.6])
.SH BUGS
1. won't distinguish two files with identical names but on
different directories. Example:
selthresh /home/foo/foo.pgm /tmp/foo.pgm
.SH WARNINGS
1. selthresh destroys the file selthresh.tem.pbm on the work
directory (if one such file exists), without asking confirmation!
2. Make sure that clara, pnmenlarge and pgmtopbm are on the
current path.
3. Write permission on the work directory is required. Two files
will be created there (selthresh.out and selthresh.temp.pbm). The
file selthresh.out contains all results, please do not remove
it.
4. The paths of file1.pgm, file2.pgm, etc, must be relative to
the work directory.
5. The results are affected by MD (see the -P flag), more than
should be. So the threshold quality measured by selthresh is
somewhat "unstable".
6. Floating comparisons '<=' and '>=' include a 0.001 delta to
avoid failures due to the inexact binary representation of some tresholds.
.SH SEE ALSO
.BR clara (1),
.br
The programs are documented fully by
.IR "The Rise and Fall of a Fooish Bar" ,
available via the Info system.
.SH AUTHOR
This manual page was written by Eduardo Marcel Macan <macan@debian.org>,
for the Debian GNU/Linux system (but may be used by others).
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