Category Archives: Modelado 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”

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).

GIS+Architectural scenaries. Awesome!

Even from scratch or from dgn/dxf vectorial format’s contour lines you create your own scenario. Then import your model previously created using Sketch-up (this time i used google’s 3d warehouse, thank you Dilbert). Stamp your house using sketch-up sandbox tools. Then fur your scenario as if it was grass… A little of photoshop like clouds andContinue reading “GIS+Architectural scenaries. Awesome!”

Map24.com; My favorite route planner!

My very good friend Fernando (a spanish/english like friend of mine:-)) introduced me this magnificent route planner he was using at that moment (three years ago!!!!)… map24.com had a very interesting 3D engine, very easy to use and very reliable… I’ve been using it since but it has never been one of the most famousContinue reading “Map24.com; My favorite route planner!”

Interesting: sketchup, more than a quick visualization tool.

I’ve extracted this information from the very interesting ‘Sketchup blog’ from Google… They talk about something I have always thought it could happen… Sketchup is not only a rapid visualization tool but a CAD like software with visuallization capabilities which in addition is integrated within a world wide used 3D scenary, perfect for Geovisualization andContinue reading “Interesting: sketchup, more than a quick visualization tool.”