Images

A USGS benchmark at the USGS National Center.

Digital Elevation Model (DEM) of Disney Epcot colorized by elevation.  Produced from QL2+ lidar acquired over Osceola County and the Reedy Creek Improvement District in Florida.

With great precision, an engraver carefully cuts away small ribbons of copper to create the contour plate for a USGS topographic map.

Alaska surveying crew circa 1924 using alidade and plane table; transportation by dogsled. USGS photo files.

Digital Elevation Model in the Atchafalaya Basin, LA

A 3D dimensional oblique visualization made by 3DEP lidar point cloud of the Washington Memorial, Washington D.C.

QL1 & QL2  high resolution lidar collected over Zion National Park in Utah to assist the park in mapping geologic hazards, wildlife habitat and identification of significant cultural and natural resources. This data will be used as a baseline for longer-term monitoring of riparian tree canopy and rive channel morphology.

Sample graphic of airborne lidar data acquisition. Target area is illuminated by pulsed laser light in the aircraft, Differences in laser return times and wavelengths are then used to make digital 3D representations of the selected ground sections.

A 3D Elevation Program lidar point cloud showing simulated flooding (in blue) of an area in Denver, Colorado

Aerial photo of the Oso, Washington landslide in 2014. The red arrows show the direction of material flow. The inset lidar image was derived from 3DEP data collected by the Washington Department of Transportation.

3D elevation data for El Paso, Texas, in the form of a lidar point cloud. These data along with other products provide valuable productivity, safety, and cost-saving benefits to instrastructure improvement projects. I(mage provided by Jason Stoker - USGS).

QL1 lidar acquired over approximately 5 square miles of the Little Bighorn Battlefield National Monument in Montana

This is the cover of the February 2010 Photogrammetric Engineering and Remote Sensing Journal

Cover image for the January 2009 Photogrammetric Engineering and Remote Sensing Journal

This is the cover of the September 2008 Photogrammetric Engineering and Remote Sensing Journal

This is the cover of the June 2006 Photogrammetric Engineering and Remote Sensing Journal

Graphical illustration of lidar pulse versus a lidar return

Landsat 7 imagery was used to create a full continent mosaic of Antarctica. 

Warren "Buz" Brown making second-order measurements using a Kern theodolite. The blind is to prevent temperature variations from affecting the instrument.

Warren "Buz" Brown making second-order measurements using a Kern theodolite. The blind is to prevent temperature variations from affecting the instrument.