Photography 3d scanner With the development of computer vision technology and photoelectric technology, 3d scanner is playing an increasingly important role in modern industrial production and advanced manufacturing technology. Using 3d scanner can not only shorten the design time and reduce the design difficulty, but also ensure the scientific accuracy of industrial design and industrial production, reduce risks, and make it easier for designers to exert their imagination and improve the modern design level. In the 3d scanner system, a very important one is the photographic 3d scanner, and its working process is similar to that of photography. When scanning an object, it scans one measuring surface at a time, which is fast and concise, hence the name. The three-dimensional scanning of photography adopts surface light technology, and the scanning speed is very fast. Generally, more than one million measuring points can be obtained in a few seconds. Based on the mosaic of multi-view measurement data, 360-degree scanning of objects can be completed. The operation is simple and convenient, and the equipment is generally small and portable. It is a good assistant for 3D scanning, industrial design and industrial inspection. According to the principle, three-dimensional optical scanners can be divided into two types, one is "camera type" and the other is "laser type", both of which are non-contact, that is to say, these two devices do not need to contact the measured object when scanning. The "laser-type" scanner belongs to an earlier product. The scanner emits a laser light band, and when the light band shines on the measured object and moves, the actual shape of the object can be obtained. A "laser scanner" is usually equipped with a joint arm. "Photographic scanner" is a new generation of industrial product scanner. Compared with the traditional laser scanner and three-coordinate measuring system, its measuring speed has been increased by dozens of times. Because the integral error is effectively controlled, the overall measurement accuracy is greatly improved. It uses visible light to project specific grating fringes onto the measuring face, and uses two high-resolution CCD digital cameras to photograph grating interference fringes. Using optical photography positioning technology and grating measurement principle, the complete point cloud of complex working surface can be obtained in a very short time. Its unique flow design and automatic splicing technology of point clouds from different perspectives make the scanning range reach 12M without the help of machine tools, and it becomes efficient and easy to scan large workpieces. Its high-quality perfect scanning point cloud can be used in product development, reverse engineering, rapid prototyping, quality control and even direct processing in automobile manufacturing.

The structure of non-contact optical 3d scanner is mainly composed of grating projection equipment and two industrial CCD cameras. When the grating is projected on the measured object, the thickness changes and shifts. With the help of CCD camera, the actual three-dimensional appearance of the measured object can be known through computer operation. Photographic 3d scanner adopts non-contact white light technology to avoid contact with the surface of objects, and can measure models of various materials. In the process of measurement, the measured object can be flipped and moved at will, and the object can be measured from multiple angles. The system is fully automatic splicing, which can easily achieve 360 high-precision measurement of objects. Moreover, texture information can be obtained quickly while obtaining surface three-dimensional data, and realistic object shapes can be obtained, which can be quickly applied to the scanning of mold manufacturing industry. Photographic 3d scanners have different names in the industry, also known as photographic 3d scanners or raster scanners, which are collectively referred to as molecules in Guangdong.