THIS work is already well known as a standard book on the subject of geodetic surveying; and the new edition should go far to uphold the reputation of the old. The diagrams and photographs are clearly ...

Say what you will about the past few years, it has produced some useful tools for the surveyor. First, LiDAR technology made it possible to collect high-density 3D data with spectacular speed, so that ...

3D spherical dot cloud based on real environment layout can be generated by laser scanner or stereo camera. Triangulation helps reveal the geometry structure of the dot cloud and is the most important ...

On a glorious sunny June day we reached the summit of Céidín, south of the Glen of Imall, to find a triangulation station or trig pillar. These concrete pillars are found on many prominent peaks ...

A box, room, or device (a darkened enclosure) that has a small hole (an aperture, maybe with a lens) through which light from external objects enters to produce an image on an opposite surface is ...