The importance of light

The video below demonstrates the importance of light for identifying potential archaeological features. Flat light or overcast conditions, which limit shadows, make it extremely difficult to differentiate the small topographical changes that may be indicative of archaeological features.

In the video below a drone / UAV survey was undertaken to create a detailed 3D model or Digital Surface Model (DSM). The DSM, as a software construct of the 3D surface of the ground, can have its texture changed and can be lit from any angle providing the shadows that may otherwise be lacking.

3D visualisations

It never ceases to amaze we what QGIS is capable of. A friend recently asked me to produce a map for a classic motorbike and car rally in aid of Movember, raising awareness about mens health issues, in particular prostate and testicular cancer, and mental health. The route passes through some of the most scenic areas of the Connemara Mountains in the west of Ireland.

I was wondering how I could make this area come alive to people, I needed 3D, so turned to the Qgis2threejs plugin, which I have used before to visualise areas in 3D. What I hadn’t noticed previously was the ‘Output’ option, which allows you to output the HTML of the entire 3D visualisation ready for upload to the web. Click on the image below to check it out.

Thanks to all the contributers at QGIS and Qgis2threejs.

3D interactive map