Metrology Department



Digital photogrammetry is an efficient method to quickly measure complex objects, both large and small. Currently the Alignment Engineering Group (AEG) has changed software from PHIDIAS (which is integrated with MicroStation) to the self-contained program Australis. In either package, digital photos are taken of an object in the field from a multitude of angles. Control points and points of interest can usually be quickly marked using retroreflective targets that are later identified automatically during processing. Alternatively, unmarked features such as edges or curves can be used to determine 3D polylines that don't require specific referencing of corresponding image points.

- Top -
Last update: March 30, 2007