Ames Stereo Pipeline 2.1 Released!

Hooray! New software for the masses! This release includes a bunch of bug fixes plus a few new features. Most importantly we’ve added support for a generic satellite camera model called the RPC model. RPCs are just big polynomials that map geodetic coordinates to image coordinates but most importantly just about every commercial satellite company ships an RPC with their imagery. This allows Ames Stereo Pipeline to process imagery from new sources that we haven’t previously been able to work with like GeoEye.

The picture on right is an example shaded colorized elevation model of the city Hobart in Australia. That image was created from example stereo imagery provided from GeoEye’s website and represents a difficult stereo pair for us to process. On the northeast corner of the image is a bunch of salt and pepper noise, which represents the water of the bay that we couldn’t correlate into 3D. In the southwest are mountains that have a dense forest with a texture that changes rapidly with viewing angle. Despite these problems you can see that our software was able to extract roads and buildings to some degree. This is interesting primarily because we wrote the software to work primarily on bare rock found on the Moon or Mars. Slowly we are improving so that we can support all kinds of terrain. For now, we recommend that our users apply ASP to imagery of bare rock, grasslands, snow, and ice for best results.

Also interesting is this colorized elevation model of Lucknow India created with Digital Globe sample imagery. The red patches are actually trees! Both of these stereo pairs are discussed as examples in our documentation. This means you can reproduce this work on your computer too!

ASP v2 Status Update

If you watch your email or ISIS’s website like a hawk, you’ll notice ISIS 3.4.0 just dropped this week. So where’s Ames Stereo Pipeline in all of this?

The current plan is to get Ames Stereo Pipeline 2.0 out before the Planetary Data Workshop on June 25th in Flagstaff. At this meeting I hope to be giving a tutorial and showing off all the cool stuff the community and the team have been developing for ASP.

http://astrogeology.usgs.gov/groups/Planetary-Data-Workshop

I currently have two limiting factors that I hope will get resolved in the next 2 weeks:

  • ASP and Binary Builder need to agree with the changes in ISIS 3.4.0.
  • The NASA Ames Lawyers need to re-license Vision Workbench under the Apache 2 license. ASP has already been re-licensed to Apache 2, however one of its prime dependencies is Vision Workbench. This is a legal block against releasing binaries.

Thank you all for your patience and for doing neat projects with Ames Stereo Pipeline. I enjoy seeing the pretty pictures at science conferences.

Things to look forward in this next release are:

  • Digital Globe Image support.
  • Faster and Memory efficient integer correlator.
  • GDAL projection interface for point2dem.
  • Parameter settings from command line and configuration file.