The basic working principle of the 3D scanner is: using a combination of structured light technology, phase measurement technology, computer vision technology, composite three-dimensional non-contact measurement technology.
The use of this measurement principle, making it possible to photographic measurement of the object, the so-called photographic measurement, is similar to the camera on the field of view of the object to take a picture, the difference is that the camera takes a two-dimensional image of the object, and the development of the measuring instrument is to obtain the object's three-dimensional information. Unlike conventional 3D scanners, the scanner can measure a surface simultaneously.
Measurement of the grating projection device to project a number of specific encoding of the structure of the light to be measured on the object, into a certain angle of the two cameras synchronized with the acquisition of the corresponding image, and then decode the image and phase calculation, and the use of matching technology, the principle of triangulation, the solution of the two cameras within the pixel point of the three-dimensional coordinates of the view area of the public ****.
Three-dimensional scanner applications
1, reverse engineering
Reverse engineering, is a technical process, that is, the reverse analysis of a target product and research, so as to deduce and derive the product's processing flow, organizational structure, functional performance specifications, and other design elements, in order to produce a functionally similar, but not exactly the same product. The product is similar in function, but not exactly the same. Reverse engineering is derived from hardware analysis in the commercial and military fields.
2. Cultural Assets
Through 3D scanning, various objects can be recorded, from small artifacts and works of art to historic buildings, neighborhoods, and even the overall urban environment can be digitized through scanning, as a cultural asset.