What technique is used to build 3D computer models of real-world locations?

Laser scanning is an advanced technique widely used to create detailed 3D computer models of real-world locations. This method involves using a laser instrument that emits laser beams over the area being surveyed. The instrument measures the time it takes for the laser to reflect back after hitting various surfaces, thus gathering precise spatial data. This information is then transformed into point clouds, which are used to build highly accurate 3D models that represent the physical features of the environment, including buildings, terrain, and other structures.

The advantage of laser scanning lies in its ability to capture immense amounts of data quickly and with high precision, making it effective for various applications, including construction, archaeology, and topographic surveying. These 3D models can then be utilized in design, analysis, and visualization, providing a comprehensive representation of the site being surveyed.