The possibilities for the future are endless with a growing interest in LiDAR technology for healthcare, smart devices, geosciences, aerial surveys, and more. You may have heard about LiDAR technology, as it has been a great innovative tool for several applications, including 3D laser mapping with unmanned aerial vehicles (also known as UAV, UAS, or drones). LiDAR is a modern remote sensing technique used by various professionals to collect and analyze data. It utilizes different mediums to transmit various types of signals to and from the objects and then analyzes the time taken to measure the distance between the transmitter and the objects. Before LiDAR, professionals relied on ground surveys or photogrammetry, which were relatively slow. LiDAR has since made this process quicker and easier.
As the demand for elevation data continues to grow, it’s important to match the level of reliability, accuracy, and resolution of the data for an appropriate and cost-effective product. LiDAR technology is commonly used in geographical information systems (GIS) to produce a digital elevation model (DEM) or a digital terrain model (DTM) for 3D mapping. Digital elevation models are used to create a 3D representation of a terrain’s surface. LiDAR is able to create three-dimensional maps in places where bad weather or thick vegetation hamper traditional aerial mapping. Using this system has made scientists, engineers, and professionals investigate natural and man-made environments with precision and flexibility. Usually, LiDAR-based DEM has a precision of 0.1 m along with sufficient horizontal resolution.
Nowadays, 3D mapping is booming in the market. International markets reached USD1.90 billion in 2015, USD16.99 billion in 2020, and it is estimated to keep rising by 2021. Companies have invested in the application of 3D maps for city visualization, management, and communication. They are also increasingly using 3D information for business development and information support purposes. 3D Lidar processing and modeling is growing fast, due to its very high frequency and precision, especially for short-distance measurement.