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3D scanning is a technology for creating high-precision 3D models of real-world objects. It works like this: a 3D scanner takes multiple snapshots of an object. The shots are then fused into a 3D model, an exact three-dimensional copy of the object, which you can rotate and view from different angles on your computer.
A 3D scan is a three-dimensional image of part of an object’s surface. Sets of 3D scans form a 3D model. Just as 2D photos are made up of pixels, 3D scans are made up of tiny triangles, or polygons. Polygons form a polygonal mesh, which replicates the object’s geometry in minute detail.
A 3D scanner generates 3D scans. A scanner works like a video camera, meaning it takes shots of an object. A camera, however, makes two-dimensional stills, while the scanner captures the geometry of the object’s surface, and the shots it has made are worked into a 3D model rather than a video.
3D scanning is a technology used in cutting-edge workflows. Take the automotive industry. Want to check if a new valve will improve an engine’s performance? 3D scan the valve to make a 3D model, modify it via reverse engineering, and place it into CAD software to see how the valve will perform inside the engine.
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