We will use the techniques we've used in the previous recipe named Creating arbitrary 3D objects for PostGIS learn how to create and import a UAV-derived point cloud in PostGIS.
One caveat before we begin is that while we will be working with geospatial data, we will be doing so in relative space, rather than a known coordinate system. In other words, this approach will calculate our dataset in an arbitrary coordinate system. ST_Affine
could be used in combination with the field measurements of locations to transform our data into a known coordinate system, but this is beyond the scope of this book.
Much like with the Creating arbitrary 3D objects for PostGIS recipe, we will be taking an image series and converting it into a point cloud. In this case, however, our image series will be from UAV imagery. Download the image series included in the code folder for this chapter, uas_flight
, and feed it into VisualSFM (check http://ccwu.me...