How the 3D scanner works
The camera-type 3D scanner is a high-speed and high-precision 3D scanning measurement device, which is applied to the most advanced structural non-contact photogrammetry principle in the world. A composite three-dimensional non-contact measurement technology combining structural light technology, phase measurement technology and computer vision technology is adopted. It uses white light grating scanning, works in non-contact three-dimensional scanning mode, fully automatic splicing, has the advantages of high efficiency, high precision, high life, high resolution, etc. It is especially suitable for reverse modeling of complex free-form surfaces, mainly used in products. R&D design (RD, such as rapid prototyping, 3D digitization, 3D design, 3D stereo scanning, etc.), reverse engineering (RE, such as reverse scanning, reverse design) and 3D inspection CAV are essential tools for product development and quality inspection. In some areas, the 3D scanner is also called a laser copying machine or a 3D copying machine.
Photographic optical 3D scanner, its structure principle is mainly composed of grating projection equipment and two industrial-grade CCD cameras. The grating is projected on the object to be tested, and the thickness and displacement are changed, which is matched with the CCD Camera. The digital image is processed by computer operation to know the actual 3D appearance of the object to be tested.
The photo-based 3D scanner adopts non-contact white light technology to avoid contact with the surface of the object. It can measure the model of various materials. During the measurement process, the measured object can be flipped and moved at will, and the object can be measured at multiple angles. Automatic stitching makes it easy to measure objects 360 with high precision. And it can quickly acquire the texture information while obtaining the surface three-dimensional data, and obtain the shape of the realistic object, which can be quickly applied to the scanning of the manufacturing industry.
How the 3D scanner worksNow mainstream 3D scanners are laser and raster 3D scanning technology, depending on your needs. Generally, scanning large scenes (such as a large room) requires laser scanning of flight time. If you want to scan a tooth, a bearing, the most we use now is the grating three-dimensional scanning method, which is much higher precision, can be used in the aerospace and medical industries.
The optical three-dimensional scanning system continuously projects the grating onto the surface of the object, the camera synchronously acquires the image, then calculates the image, and uses the phase steady-state polar line to realize the three-dimensional space coordinates (X, Y, Z) on the two images, thereby realizing Measurement of the three-dimensional contour of the surface of the object. If you look at the following equipment, it has a SLR camera with a fixed-focus lens than the ordinary 3D scanning system. The function is to paste the color texture information of the part to be scanned onto the 3D model, so we call it true color 3D. Scanning system, of course, this is another application of 3D scanning in cultural relics and film and television.
When encountering many complex measurement applications that require both face scan data and measurement data for individual feature points, the following tools may come in handy. We call it an optical stylus (3DProbe) that can be used with 3D scanners. The point measurement data can be automatically joined to the industrial grade 3D scanner data. The device can quickly and flexibly measure the hole position, boundary line and characteristic line of the workpiece. After processing, the CAD 3D data model can be obtained, which can be widely used in the fields of mold design, reverse engineering, physical measurement, quality inspection and control.
3000 Puffs Vape,Breeze Vape Pod,Disposable Oil Vape Pen,Electronic Cigarette Aim Stick
Guangzhou Yunge Tianhong Electronic Technology Co., Ltd , https://www.e-cigarettesfactory.com