.TH "pfscut" 1
.SH NAME
pfscut \- Extract a rectangle out of a frame in PFS stream
.SH SYNOPSIS
.B pfscut
[--left <columns>] [--right <columns>] 
[--top <rows>] [--bottom <rows>]
[--width <new_width>] [--height <new_height>] [--help]
[x_ul y_ul x_br y_br]
.SH DESCRIPTION
Extract a rectangle out of each frame in PFS stream. You can either
specify x and y coordinates of upper left and lower right corner (the
coordinates start with 0 and rise in the left-to-right and
up-to-botton directions) or give a combination of the options listed
below.
.SH OPTIONS
.TP	
--left <columns>, -l <columns>
Number of columns to be cut out from the left edge of an image. 
.TP
--right <columns>, -r <columns>
Number of columns to be cut out from the right edge of an image. 
.TP
--top <rows>, -t <rows>
Number of rows to be cut out from the top edge of an image. 
.TP
--bottom <rows>, -b <rows>
Number of rows to be cut out from the bottom edge of an image. 
.TP
--width <new_width>, -W <new_width>
Width of an output image. Note that --width can be mixed with either
--left or --right option.
.TP
--height <new_height>, -H <new_height>
Height of an output image. Note that --height can be mixed with either
--top or --bottom option.
.TP
--help, -h
Print a list of commandline options.
.SH EXAMPLES
.TP
pfsin image.hdr | pfscut --left 20 --top 5 | pfsout out.hdr
Cut out 20 columns from the left and 5 rows from the top edge of 
image.hdr and save frame as out.hdr. 
.TP
pfsin image.hdr | pfscut --left 20 --width 400 | pfsout out.hdr
Cut out 20 columns from the left edge of image.hdr, and create output
image 400 pixels in width.
.TP
pfsin image.hdr | pfscut 0 0 511 511 | pfsout out.hdr
Cut left-upper part of the image of the size 512x512 (note that
coordinates start with 0 and 512 is the last row/column that is
included in the resulting image).
.TP
.SH SEE ALSO
.BR pfsin (1)
.BR pfsout (1)
.SH BUGS
Please report bugs and comments to Dorota Zdrojewska
<dzdrojewska@wi.ps.pl>.