Definition
Laser Scanning is the process of analysing a real-world environment by collecting data on its shape and its appearance. It can be used along with (or as a complete alternative to) conventional survey methods. A laser scanner collects a large amount of data over a short period of time. The collected information transforms in the form of point cloud data, which than can be used to construct maps or digital 3D models.
Background
TLS has its origins in the technological advancements of the 1960s utilizing lights, cameras, and projectors to capture the surfaces of objects. These early systems were limited by the technology of the time, often requiring significant effort to produce accurate scans. The late 1990s and early 2000s saw TLS technology transition from research and development into practical applications across various industries. Developments in computing power, data storage, software and algorithms facilitated the processing of large point cloud datasets, made laser scanners the most viable tools for detailed spatial measurements by today. TLS offers automated, high-resolution, three-dimensional surface data collection that dramatically enhances the efficiency and accuracy of surface quality assessments. With laser scanning, time and accuracy are no longer in conflict - surveyors can collect detailed data rapidly over large areas, reducing both manual labour and subjectivity.