Scan, SCAN or Scanning may refer to: Science and technology. Computing and electronics. Graham scan, an algorithm for finding the convex hull of a set of points in the plane. 3D scanning, of a real-world object or environment to collect three dimensional data. Counter-scanning, in physical micro and nanotopography measuring instruments like scanning probe microscope. Elevator algorithm or SCAN, a disk scheduling algorithm. Image scanning, an optical scan of images, printed text, handwriting or an object.
https://en.wikipedia.org/wiki/Scan