Scanning & XR · Beginner

3D scanning

Measuring a real object or place to make an accurate 3D copy

What is 3D scanning?

3D scanning is the process of measuring the shape of a real object, person or place and turning it into a digital 3D model. Scanners use lasers, projected light patterns or photos to record millions of surface points, which software joins into a mesh. Accuracy depends on the scanner and the surface.

Think of it like this

It is like pressing a mold around an object, except light does the touching and the copy is digital.

Where it fits in a 3D project

  1. Create
  2. Surface
  3. Rig
  4. Animate
  5. Render
  6. Export

Create: Building the shape: modeling, sculpting, scanning or generating it.

How 3D scanning works

  1. 01The scanner projects light or a laser onto the surface, or photographs it.
  2. 02It measures where that light lands, recording points in 3D space.
  3. 03You scan from several angles until every side is covered.
  4. 04Software aligns the scans, joins the points into a mesh and adds color.

3D scanning vs photogrammetry

Property3D scanningPhotogrammetry
How it measuresLasers, light patterns or depth sensorsPhotos only
EquipmentA dedicated scanner or a phone sensorAny camera
Plain or dark surfacesHandles betterStruggles
Color detailVariesExcellent

Photogrammetry is one kind of 3D scanning; use a dedicated scanner for precise measurements or plain surfaces, and photos for rich color and large places.

Where 3D scanning is used

  • Quality checks and reverse engineering in manufacturing
  • Digital copies of statues, fossils and heritage sites
  • Scanned props, people and sets for film and games
  • Custom fits, such as dental, medical and footwear models

Beginner tip

Shiny, black and see-through surfaces scatter or swallow the light. A light coat of scanning spray or matte powder, where it is safe for the object, makes them scannable.

Terms related to 3D scanning

3D scanning FAQ

Can I 3D scan with my phone?
Yes. Scanning apps use the camera for photogrammetry, and some phones add a depth or lidar sensor for quick room and object scans. Phone scans are great for reference and props; precise parts still need a dedicated scanner.
How accurate is 3D scanning?
It ranges widely. Professional laser and structured-light scanners can measure to a fraction of a millimeter, while phone scans are much coarser, often off by millimeters or more. Check the scanner’s stated accuracy for the size of object you need.
What are the types of 3D scanners?
The main types are laser scanners, structured-light scanners that project patterns, photo-based rigs, and depth or lidar sensors. They range from handheld devices for objects to tripod units that scan whole buildings.

Updated October 29, 2026 · Browse all 3D terms