Ubuntu Manpage: pnmstitch - stitch together two panoramic (side-by-side) photographs

NAME

       pnmstitch - stitch together two panoramic (side-by-side) photographs

SYNOPSIS

       pnmstitch  [ [left_filespec] right_filespec | left_filespec right_filespec output_filespec
       ]      [-width=width]      [-height=height]      [-xrightpos=column]      [-yrightpos=row]
       [-stitcher={RotateSliver,                                    BiLinearSliver,LinearSliver}]
       [-filter={LineAtATime,HorizontalCrop}] [-output=output_filespec] [-verbose]

       All options can be abbreviated to their shortest unique prefix.  You may use  two  hyphens
       instead of one.  You may separate an option name and its value with white space instead of
       an equals sign.

DESCRIPTION

This program is part of Netpbm(1).

pnmstitch stitches together two panoramic photographs. This means if you have photographs
of the left and right side of something that is too big for a single camera frame,
pnmstitch can join them into one wide picture.

pnmstitch works only on side-by-side images, not top and bottom (though you could
certainly use pamflip in combination with pnmstitch to achieve this). It stitches
together two images, but you can use it repeatedly to stitch together as many as you need
to.

Your photographs must overlap in order for pnmstitch to work, and the overlap should be
substantial. pnmstitch shifts and stretches the right hand image to match it up the left
hand image. You probably want to crop the result with pamcut to make a nice rectangular
image.

If you're just trying to join (concatenate) two images at their edges, use pnmcat.

The left_filespec and right_filespec arguments are the specifications (names) of the PNM
files containing the left hand and right hand images. If you specify only right_filespec,
the left hand image comes from Standard Input. If you specify neither, both images come
from Standard Input as a multi-image file containing first the left and then the right
image.

output_filespec is the specification (name) of the output PNM file. The -output option
also specifies the output file. You cannot specify both the argument and the option. If
you specify neither, the output goes to Standard Output.

OPTIONS

       In addition to the options common to all programs based on libnetpbm (most notably -quiet,
       see
        Common  Options  ⟨index.html#commonoptions⟩ ), pnmstitch recognizes the following command
       line options:

       -width=width

       -height=height

       -xrightpos=column

       -yrightpos=row
              These are constraints on where pnmstitch stitches the  images  together.   For  the
              LinearSliver  method,  column  and  row  tell what location in the right hand image
              matches up to the top right corner of the left hand image.

       -stitcher={RotateSliver,BiLinearSliver,
              LinearSliver} The default is RotateSliver.

       -filter={LineAtATime,HorizontalCrop}
              No details available.

       -output=output_filespec
              Name of output file.  If you don't specify this option, the output  image  goes  to
              Standard Output.

       -verbose
              This  option  causes  pnmstitch  to  issue  messages  to  Standard  Error about the
              stitching process.

HISTORY

       This program was added to Netpbm in Release 10.7 (August 2002).

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