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3D scanning is the process of analyzing a real-world object or environment to collect three dimensional data of its shape and possibly its appearance (e.g. color).
A structured-light 3D scanner is a device that measures the three-dimensional shape of an object by projecting light patterns—such as grids or stripes—onto it and capturing their deformation with cameras. [1]
By scanning (changing) the measurement beam path length relative to the reference beam, a correlogram is generated at each pixel. The width of the resulting correlogram is the coherence length, which depends strongly on the spectral width of the light source.
As the output of 3D scanning processes, point clouds are used for many purposes, including to create 3D computer-aided design (CAD) or geographic information systems (GIS) models for manufactured parts, for metrology and quality inspection, and for a multitude of visualizing, animating, rendering, and mass customization applications.
An existing object, reverse engineered or copied using a 3D shape digitizer or scanner; Mathematical data stored in memory based on a numerical description or calculation of the object. [18] A wide number of 3D software are also used in constructing digital representation of mechanical models or parts before they are actually manufactured.
3D body scanning is an application [1] of various technologies such as structured-light 3D scanner, 3D depth sensing, stereoscopic vision and others for ergonomic and anthropometric investigation of the human form as a point-cloud. The technology and practice within research has found 3D body scanning measurement extraction methodologies to be ...
Traditionally, determining defects, voids and cracks within an object would require destructive testing. CT scanning can detect internal features and flaws displaying this information in 3D without destroying the part. Industrial CT scanning (3D X-ray) is used to detect flaws inside a part such as porosity, [7] an inclusion, or a crack. [8]
3D rendering of a micro CT of a treehopper. 3D rendering of a μCT scan of a leaf piece, resolution circa 40 μm/voxel. Two phase μCT analysis of Ti2AlC/Al MAX phase composite [ 1 ] In radiography , X-ray microtomography uses X-rays to create cross-sections of a physical object that can be used to recreate a virtual model ( 3D model ) without ...
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