The point cloud is a model, which is describe through a series of 3D space points. The point cloud is defined in X, Y, Z format. This model is intended to represent the external surface of an object. The point cloud models are usually created by 3D scanners.
A 3D scanner is a component that analyzes real world objects or its environment collected data on its shape and appearance. The data collected can be used to construct digital 3D models. The 3D data collected can be used for a wide variety of applications. They are used the majority of the times by the entertainment industry such as video games, movies and website applications like Earth maps. These collected data can also be found in technology applications such as: Orthotics, industrial design, prototyping and documentation and search of artifacts. A 3D scanner measures large number of points from the surface of an object. The point cloud represents the total set of points that the scanner has measured.
The point cloud is used for many purposes such as: Creation of 3D CAD models for manufactured parts, animation, multitude of visualization, mass customization applications and metrology. CAD also known as Computer Aided Design is the software, which is used in architecture, art, engineering and manufacturing for the assistance of precision drawing. CAD is a computer technology used to design documentation and design process. This technology is often used for the creation of simulation of photos which are required in the preparation of Environmental impact reports. Nowadays CAD exist for all major operating systems such as: Linux, Windows, Mac OS and Unix.
A point cloud is one of the sources used to make digital elevation model of a terrain in geographic information systems. The point clouds are employed to generate 3D models of urban environment. All point clouds are directly usable in the application of inspection and industrial metrology.