Author Archives: Alberto

Visualizing Telco datasets using SpaceEyes 3D

Hi again, I have started using this visualization engine to overlay standard ortho imagery, DTM datasets and telecomunication specific datasets… All i can say so far is that it works pretty well!!!. Being able to understand the scope of land use dataset while we swipe different types of images… it works!! In this particular case a landContinue reading “Visualizing Telco datasets using SpaceEyes 3D”

Creating DEM/DTM

It was 2007 when i finished my master’s degree and wanted to show some videos of procedures. At that moment in time i wanted to find a job -any job- involving GIS and i finally found it dealing with the Geovisualization department within a GIS company… now i happen to deal with DEMs. DTM, etcContinue reading “Creating DEM/DTM”

Airmap: UAV aerial surveying technology

The most efficient way to monitor our environment is from above. Traditionally, aerial photography and mapping is a costly and time consuming business. However, by using our UAV technology, we are able to offer a cost and time effective solution for your aerial photography and mapping needs. Obtaining high resolution Orthorectified image mosaics and DigitalContinue reading “Airmap: UAV aerial surveying technology”

ViewTec’s State-of-the-art 3D visualization

Good news!!!! They’ve probably released this Geovisualization Engine long time ago (It used to be an ‘in-house’ software) but I have just realized. I worked with this state-of-the-art TerrainView 3D software for six months while I was working as a GIS Specialist in Cape Town (South Africa)… What does this software has that no oneContinue reading “ViewTec’s State-of-the-art 3D visualization”

Smarter Streets: Case Studies for Cities and Utilities – Learn How the City of Baltimore and Washington Gas Reduced Costs

In the City of Baltimore, the decades-old infrastructure consists of 2,000 miles of roads, 300 bridges and culverts, 7,600 miles of water pipes, storm water drains and wastewater lines, and 3.7 million feet of conduit. Washington Gas serves more than one million residential, commercial and industrial customers throughout the Washington, DC metropolitan area. What theyContinue reading “Smarter Streets: Case Studies for Cities and Utilities – Learn How the City of Baltimore and Washington Gas Reduced Costs”

Visualizing LAS LIDAR data with sketch-up

While trying to figure out the way to get a 3D model from raw Lidar data, I first opened my LAS file in Global Mapper, exported it to DXF, imported then into Sketch-up and after recording a few scenes, I saved the animation… this is it!. Alberto

Using Excel to calculate the RMSE for LiDAR vertical ground control points

The height accuracy of the collected LiDAR data can be verified by comparing with independently surveyed ground control points on hard, flat, open surfaces. It is essentially just calculating the height differences for all the control points and then determining the height root mean squared error (RMSE) or differences. Most LiDAR processing software have the reporting function built-in. However, plain Microsoft Excel can also do the job (except for extracting the elevation from the LiDAR data).

Data acquisition: How do I know if this river is been well acquired?

I’ve already entered my river but my imagery was in 2D so… was it well acquired?…  First of all, I import my shape (shp) file into Global Mapper (what a great sofware!) and export my vector file as a KML. Import my river.kml file into my brand new Google Earth 5.2 or just double-click itContinue reading “Data acquisition: How do I know if this river is been well acquired?”