Structured Light Scanner Triangulation

Sensor set up considerations.

Structured light scanner triangulation.

A structured light 3d scanner is a 3d scanning device for measuring the three dimensional shape of an object using projected light patterns and a camera system. The target object is stationary. At present laser triangulation scanners structured light and contact scanning are the predominant technologies employed for industrial purposes with contact scanning remaining the slowest but overall most accurate option. Structured light 3d scanning.

Projecting a narrow band of light onto a three dimensionally shaped surface produces a line of illumination that appears distorted from other perspectives than that of the. I ll walk you through setting up your projector and camera and capturing images that can be decoded into a 3d point cloud using a processing application. The same technique used for thom s face in the radiohead house of cards video. So how do laser scanners compare to structured light scanners.

Nevertheless 3d scanning technology offers distinct advantages compared to traditional touch probe measurements. Configuring a structured light sensor for a specific application is in some respects a simple process. For sub micron applications led structured light sensors are preferred since laser triangulation sensors produce laser speckle that prevents scanning at the sub micron level. By emitting a beam of light on any single point of an object and taking three measurements of the point including distance and angle the exact position of the point space can be determined.

The concept of triangulation.