Structured Light Scanner Triangulation

Sensor set up considerations.

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. The concept of triangulation. 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. 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.

Configuring a structured light sensor for a specific application is in some respects a simple process. The target object is stationary. 3d scanning can be based on different technologies each with their own benefits limitations. 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.

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. So how do laser scanners compare to structured light scanners. Just as with other 3d scanning technologies structured light 3d scanning is based on the concept of triangulation. 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.

Nevertheless 3d scanning technology offers distinct advantages compared to traditional touch probe measurements.