Many owners-to-be face a dilemma when considering an apartment off plan: although it is usually less expensive to buy that way, they have little idea of what the view will be like. Regardless of how imaginative they are, they still have to allow for some disappointment – a nice building may seem unsightly from up high. Yet a PolyU invention offers a solution. The two most commonly used 3D mapping techniques are photogrammetry using satellite or aerial imagery, and laser scanning. The former offers greater accuracy in the horizontal direction and the latter in the vertical direction.  Read More