Category Archives: Geospatial

Home-Brewed Ground Control Markers

DIY UAV Ground Control Markers Hey, Kids! It’s All Drones These Days! Thanks to their availability, quality, and increasing ease of use, many GIS organizations are collecting aerial imagery with unmanned aerial vehicles (UAVs). With the abundance of high-resolution imagery coming from UAVs, members of the GIS tribe often find ourselves using ground control markers (GCMs) to georeference… Read More »

Book Review: Geographic Information Science: Mastering the Legal Issues – 1st Edition

This was originally posted in 2015 and Updated October 16, 2018 by George Cho (Author) ISBN-13: 978-0470850107 ISBN-10: 0470850108 5.0 out of 5 stars – This is a review I wrote for Amazon.com on February 22, 2015. Format: Paperback Verified Purchase I have dabbled professionally in GIS since the early 1990’s while working as a city planner. In… Read More »