All posts by Mike Tully

SGM

Obtaining economical and accurate point clouds from semi-global matching. In the old days, mappers were thrilled with 30 meter USGS digital elevation models (DEMs). These were available for almost everywhere in the United States. Years later they started producing 10m DEMs, and life was really good. We had one elevation point “on the ground” every...

Aerial Perspective: How NOT to Procure Professional Geospatial Services

By Mike Tully Editor’s Note: This advice is directed at companies writing RFPs for your services; its language is humorous, but the tips are serious and worth sharing with your prospective clients in your own manner. I love Amazon.com. Knocking off my shopping list by finding the cheapest price for all is glorious. Reading real...