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Pnmstitch User Manual(0) Pnmstitch User Manual(0)
NAME
pnmstitch - stitch together two panoramic (side-by-side) photographs
SYNOPSIS
pnmstitch [ [left_filespec] right_filespec | left_filespec right_file-
spec output_filespec ] [-width=width] [-height=height] [-xrightpos=col-
umn] [-yrightpos=row] [-stitcher={RotateSliver, BiLinearSliver,Lin-
earSliver}] [-filter={LineAtATime,HorizontalCrop}] [-output=out-
put_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
-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 out-
put image goes to Standard Output.
-verbose
This option causes pnmstitch to issue messages to Standard Error
about the stitching process.
SEE ALSO
pamcut(1) , pnmcat(1) , pamflip(1) , pnm(5) ,
HISTORY
This program was added to Netpbm in Release 10.7 (August 2002).
netpbm documentation July 2002 Pnmstitch User Manual(0)
