3D Scanners

3D Scanning in general is defined as a technology that can capture real world data and convert it into a 3D model, thereby allowing the creation of a 3D objects. It’s basically imprints a digital copy of a physical real world object.

In case of 3D printing, the two relevant techniques of 3D scanning available are:
  • Photogrammetry
  • Light-based scanning

1. Photogrammetry

      Photogrammetry method is based on taking 2D pictures around an object from different angles, and stitching them together into a single 3-Dimensional image. It requires a camera to obtain 2D images and software to stich the images into a 3D one.

2. Light-based scanning

      The two common types of light based scanners used for 3D scanning are “structured light” and “laser scanning”. Structured light scanners send patterns of light onto the object to capture images whereas laser scanning measures the angle of reflected lasers and translate them into coordinates of an object.