Definition
Structured light scanning is a 3D scanning method that captures the shape of an object by projecting a known pattern of light onto it and observing how that pattern deforms over the surface. The distortions reveal the object’s precise contours.
It is especially good at capturing small to medium objects in fine detail, making it popular where high accuracy on surfaces and shapes is needed. The result is a detailed 3D model or point cloud.
In simple terms, structured light scanning reads the shape of an object by watching how projected light bends across it.
How It Works
A structured light scanner projects patterns, often stripes or grids, onto an object while one or more cameras record how the patterns appear on its surface. Because the projected pattern is known, the way it distorts tells the system the exact depth and shape at each point.
By combining these observations, the scanner reconstructs a detailed 3D surface. Multiple scans from different angles are often merged to capture an object completely, producing an accurate digital model.
Applications
Structured light scanning is used in manufacturing, quality control, reverse engineering, heritage, and design. It captures parts for inspection, digitises objects for modelling, and records artefacts in fine detail, excelling where precise capture of smaller objects is required.
Benefits
- High detail on small to medium objects.
- Fast capture of complex surfaces.
- Non-contact, safe for delicate items.
- Accurate 3D models for inspection and design.
- Excellent surface and shape fidelity.
Related Terms
- 3D Laser Scanning
- Point Cloud
- 3D Model
- Reality Capture
Frequently Asked Questions
What is structured light scanning used for?
It is used in manufacturing, quality control, reverse engineering, and heritage to capture detailed 3D models of objects.
How does structured light scanning work?
It projects a known light pattern onto an object and uses cameras to see how the pattern distorts, revealing the surface shape.
How does it compare to laser scanning?
Structured light excels at fine detail on smaller objects, while laser scanning is often better suited to large spaces and long ranges.
Is structured light scanning accurate?
Yes, it can capture very fine surface detail, making it well suited to precise inspection and modelling.
About Track3D
Track3D helps teams turn 3D scans into accurate digital twins and reality capture insights. Learn more at Track3D.
