An overview of 3D laser scanning services should accomplish two things: a list of what scanning/surveying technologies are commonly available through 3D scanning services, and a list of these technologies’ applications. That is what this article intends to do, giving a brief overview of scanning services and surveying services offered by 3D scanning services. Below, we list the technologies that are often found within these groupings at a 3D laser scanning service.more info here
Although the terms “scanning” and “surveying” are often user interchangeably to refer to services rendered by scanning providers, the term scanning specifically applies to applications carried out by a laser scanner. There are numerous types of laser scanners. But the most commonly used scanners by companies that own their own scanning equipment as well as companies that outsource their scanning needs are: contact scanners, which physically probe small to medium sized objects and are known for their high accuracy; time-of-flight scanners, which use a laser to scan large objects from long distance and are know for their more basic accuracy; and triangulation scanners, which emit a pattern of light across the surface of small to large objects that is read by a camera to determine an object’s data. Like contact scanners, triangulation scanners are known for their high accuracy.
Contact scanners are commonly used to probe small, intricate objects, including clay models, for reproduction purposes, although their probes can be dangerous for delicate heritage objects. Time-of-flight scanners are generally used to scan buildings and terrains, and are commonly used in architecture, construction, conservation and archaeology. Triangulation scanners are commonly used to scan both small and large objects, particularly large objects whose scanning requires great accuracy concerning surface area, such as the scanning of heritage objects for restoration purposes.
The surveying services offered by laser scanning companies generally center on three surveying technologies: Digital elevation modeling, which digitally represents topography, and is commonly used in engineering design, transportation system design, and creating relief maps; LINDAR (Light Detection and Ranging), which measures properties of scattered light to detect terrain and object features, and is commonly used in geology, conservation, and military and law enforcement; and LAMP (Low Altitude Mapping Photography), which uses high resolution cameras to photograph objects and terrain from roughly 300 feet above ground level, and is commonly used in road planning, aerial mapping, and power line and pipeline patrolling.