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
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