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Stephen has been working in GIS, Planning, and related fields since 1998, working since 2008 as the GIS Manager for Cleveland Metroparks. He has been interested in the application of computer vision to geospatial analyses since 2004, and founded the OpenDroneMap project (, a project to bring together and extend a suite of open source computer vision software for use with UAS (drone) and street level images. The scalability and distributability of OpenDroneMap as free and open source software has lead to its adoption across sectors, with notable users in conservation, development, and disaster response.

In addition to managing Cleveland Metroparks GIS program and leading OpenDroneMap, Stephen works with the Cleveland Metroparks Zoo and Karisoke Research Center (Dian Fossey Gorilla Fund International) to research mountain gorillas in Rwanda.

Stephen is also coauthor of the PostGIS Cookbook and blogs all his geospatial and ecological whims at