Structured Light Scanner Triangulation

In this article we explore the two main technologies used for 3d scanning for 3d printing in other words laser triangulation and structured light.

Structured light scanner triangulation.

The concept of triangulation. The target object is stationary. So how do laser scanners compare to structured light scanners. Sensor set up considerations.

Nevertheless 3d scanning technology offers distinct advantages compared to traditional touch probe measurements. 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. Configuring a structured light sensor for a specific application is in some respects a simple process. 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.

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. 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. 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.

Structured light 3d scanning.