3D Metrology / Structured Light 3D Scanning

At Scansite 3D, we choose the highest quality 3D metrology hardware and software available on the market. That’s why we exclusively use Structured Light 3D Scanning as opposed to a 3D Laser Scanner, for all our clients – from aerospace to museum projects. With so many 3D measurement systems available, it’s vital to understand the importance of data precision, application areas and the measuring process.

Structured Light 3D Scanning vs. 3D Laser Scanners

3D Laser Scanners only capture individual object points, lines, or areas as a compact grid. Structured Light 3D Scanning works by projecting a moray fringe pattern onto the surface of the object using an LCD projector. A camera, offset slightly from the pattern projector, looks at the shape of the pattern and measures the entire surface of the object in the field of view. Subsequently, the high measuring point density generated from Structured Light 3D Scanning not only results in more precise measurement data (accuracy in the sub millimeter range), but also a considerably higher resolution.

Another advantage to Structured Light 3D Scanning is speed and flexibility, which give us the means to handle increasingly demanding projects and/or scanning conditions. Our large array of measuring volumes and software allow us to work in many challenging environments, indoors or out, on projects ranging from jewelry to aircraft.

Additionally, Structured Light 3D Scanners use photogrammetry to ensure accurate alignment. Large object scanning can require 100 or more individual scans to gather all of the measurement information needed. As the next step in any project is to merge those individual scans into a single description of the object, it is critical that this step is done correctly.

How 3D Scanning works

A 3D scanner analyzes real-world objects or environments to collect three-dimensional data on its shape. 3D scanners share several traits with cameras. While a camera collects color information about surfaces within its field of view, a 3D scanner collects distance information about surfaces within its field of view. The “picture” produced by a 3D scanner describes the distance to a surface at each point, thus allowing the three-dimensional position to be identified.

Call us to tell us about your project. We’d love to tell you how we’d approach it with the best technology and provide high-quality, dependable services.