Over the last few months I've been experimenting with an aerial photogrammetric technique to record earthworks in 3d. The process starts with a remote controlled aircraft with camera attached, and a 100+ photos later of the earthworks in question, the photos are computationally processed to generate a 3d model of surface topography..
The site I'm currently looking at is next to Ballymoon Castle in Co. Carlow, Ireland. There are earthworks clearly visible on bing's satelite imagery of the site here: Satelite Image
.. The best way I've found to present these models is output an animation with light direction varied over time as shown below:
The site itself has an Anglo norman moated site partially depicted on the extreme left above ( or the vegetation covered square feature to the north in the satelite image), and a Castle (Ballymoon castle) the corner of which is depicted on right edge of the animation above. I'm trying to figure out what's going on the middle and any help would be most appreciated..
Here's a different type of output, (a plot of surface normals) which similarly highlight some of the features...