OpenTopography Tool Registry

The OpenTopography Tool Registry provides a community populated clearinghouse of software, utilities, and tools oriented towards high-resolution topography data (e.g. collected with lidar technology) handling, processing, and analysis. Tools registered below range from source code to full-featured software applications. We welcome contributions to the registry via the Contribute a Tool page.

Appearance of a tool in the OpenTopography Tool Registry does not imply endorsement, recommendation, or support, by the NSF OpenTopography Facility and is meant simply as a service to our users. OpenTopography does not guarantee the completeness or accessibility of specific content and links contributed by users. If you have been directly involved with the development of a registered tool and are not the original contributor of the tool to the registry, please email info@opentopography.org to supply updates or modifications to its entry.
Date   Tool Name Tool Type Keywords Rating
4 Sep 2014 CHaMP Transformation Tool

Description: The Ecogemorphology & Topographic Analysis Lab (ET-AL) and the RSGIS Laboratory developed this ArcGIS Add-in for the transformation and projection of CHaMP field survey data (Bouwes et al. 2011) into real world coordinates given hand-held GPS coordinates from just three benchmarks. The CTT will work with any unprojected data in a file geodatabase, and gives you multiple ways to do an afine transformation based on a simple shift and rotation. Although other transformation tools exist in ArcGIS, there is not a simple sequence of geoprocessing tools, which allow you to transform vector data in a manner that preserves the high relative accuracy of a total station survey. See Wheaton et al. (2012) and the ReadMe page for more background.
 
Data Management / Handling transformation, georeferencing point cloud
(0 rating)
10 Mar 2015 Tiffs (Toolbox for Lidar Data Filtering and Forest Studies)

Description: Tiffs (Toolbox for Lidar Data Filtering and Forest Studies) is a professional software that is highly automatic, very fast, and accurate in generating bare earth models, digital surface models, digital height models, and extracting forest information from individual trees to regional scales.

Tiffs was featured in the cover of the 2007 February issue of Photogrammetric Engineering & Remote Sensing (PE&RS), the official journal of photogrammetry and geospatial society in the U.S. The core algorithms in Tiffs have won a couple of prestigious awards including the Best Paper Award in the Remote Sensing Specialty Group of Association of American Geographer in 2005. Most of the algorithms are published in the peer-reviewed journal PE&RS. The filtering algorithm was validated with the benchmark dataset provided by ISPRS (the International Society of Photogrammetry and Remote Sensing). The comparison with the other well-known algorithms showed that our algorithm achieved the best overall accuracy. The tree isolation method used a conquer-and-divided strategy and has the advantages of minimizing both omission (missing trees) and commission (overcounting trees) errors. The canopy structure estimation is based on an innovative metric called canopy geometric volume, which has solid scientific roots in plant allometry.

 
Point Cloud Analysis, DEM generation, DEM Analysis, Data Management / Handling, Software Suite filtering; DEM; CHM; individual tree analysis; area-based analysis; statistical modeling
(0 rating)
29 Jul 2015 lidar2dems

Description: The lidar2dems project is a collection open-source (FreeBSD license) command line utilities for supporting the easy creation of Digital Elevation Models (DEMs) from LiDAR data. lidar2dems uses the PDAL library (and associated dependencies) for doing the actual point processing and gridding of point clouds into raster data.
 
DEM generation DEM, DSM, DTM, CHM, PDAL, points2grid, gridding
(0 rating)