The 3D scanner is a scientific instrument used to detect and analyze the shape (geometric structure) and appearance data (such as color, surface albedo, etc.) of objects or environments in the real world. The collected data is often used for 3D reconstruction calculations to create digital models of actual objects in the virtual world. These models have a wide range of uses, including industrial design, defect detection,  engineering, robot guidance, geomorphology measurement, medical information, biological information, criminal identification, digital cultural relics, film production, game creation materials, etc. application. The production of 3D scanners does not rely on a single technology. Various reconstruction technologies have their advantages and disadvantages, and the cost and price are also different. There is no universal reconstruction technology, and the instruments and methods are often limited by the surface characteristics of the object. For example, optical technology is not easy to handle shiny (high albedo), mirror or translucent surfaces, while laser technology is not suitable for fragile or perishable surfaces.