Stereo Matching Tool
Stereo Matching Tool (SMT) is an interactive program which provides
basic functions for displaying stereo image pairs and measuring the
parallax between features on those images. It is an IDL program and
should work on any IDL-supported platform. The program is based on the
Light Table (LT) program that Vexcel Corporation (www.vexcel.com)
developed and distributed in the 1990's with some versions of the
Magellan Stereo Toolkit. Like the original Light Table, SMT is designed
to be fully compatible with the Magellan Stereo Toolkit and utilizes
the Toolkit's directory structure and file naming conventions. A
primary difference is that SMT displays stereo imagery by placing the
left-eye image in the red image band and the right-eye image in the
green and blue bands, while Light Table utilized a system that
flickered the screen between the
left- and right-eye images. This difference means that SMT requires no
special stereo hardware or software for its use, but SMT can only be
used with gray-scale imagery (all color information is lost). SMT
is a stand-alone program that will work with any gray-scale stereo pair
formatted so that the images are in the same map projection and have
the
same scale in terms of meters/pixel. Image display functions include
panning, zooming (in predefined increments), brightness/contrast
adjustments, and changing the x- and y-parallax of the images. Parallax
measurements are accomplished by overlaying feature marks on the images
and writing the image space coordinates of the feature marks to ASCII
files. Four different kinds of feature marks can be created; two
are single point types, and two are stereo polylines. Feature marks can
be selected, deleted, and selectively displayed or blanked. SMT
provides an optional automated stereo correlation capability when
making parallax measurements.
Documentation A PDF file containing
installation directions and a user manual
The Program A gzip'ed tar file that
contains the program
This work is
licensed under a Creative Commons
Attribution-Noncommercial 3.0 License
Here is a screen dump of the program in action:
