The GSD has three 3D scanners available for use.
The David 3D Laserscanner is a structured light scanner, which means that it projects a pattern of light onto the object being scanned and captures the projected image, determining the shape of the object via the distortion of the pattern. The scanner is a combination of a light projector and two capturing cameras that needs to be set up on a tripod. Therefore a studio setting is best for using this scanner. the David also comes with an automatic turntable to speed up the process.
What is possible with the David 3D Laserscanner? https://www8.hp.com/us/en/campaign/3Dscanner/overview.html#software
The Artec Eva is a powerful handheld scanner. I swiftly captures a given frame while precisely stitching that view to the previous views to create a 3D scan. It is appropriate for situations when you can't bring the scanning target/object into a studio. However the scanner needs to be connected to a laptop with an Artec Studio license and a power source at all times. The Eva is also fit for human scanning because of its fast capturing speed.
Learn more at https://www.artec3d.com/portable-3d-scanners/artec-eva
When used as a 3D scanner, the Structure Sensor allows you to capture dense geometry in real-time. This enables you to simulate real world physics and create high-fidelity 3D models with high-resolution textures in seconds. It can quickly scan interiors, people and objects and exports files quickly via email. This option is best when you want a quick low-mid resolution scan and don't want to be tethered in any way when 3D scanning.
What is possible with the Structure Sensor for iPad?
How it works - https://youtu.be/CvMzik6SGmM?t=119
Scanning humans with the Structure Sensor - https://www.youtube.com/watch?v=coYebICo2O8
|David/HP||Artec Eva||Structure Sensor (iPad)|
|Yes, within native software||Yes, within native software||No|
Projector, two cameras, tripod, calibration,
|Eva scanner, Artec Studio Software,|
|Indoor studio with white or black backdrop|
depending on the object being scanned
(Backdrop should contrast the object)
|Indoor / Outdoor, Must have access to|
power source and a laptop with Artec
Anywhere; Tends to have difficulty scanning
Shiny or Dark
|Has difficulty scanning, object needs to be|
prepared with baby powder
|Can scan||Has difficulty scanning, object needs to be|
prepared with baby powder
|Output File Types||OBJ, STL, PLY, DAVIDMESH|
|OBJ, STL, PLY, SCAN, SPROJ, WRL|
|Max 30cm x 30cm x 30cm||No Limit when creating multiple scans|
and stitching together
Min 2.5cm x 2.5cm x 2.5cm (1"x1"x1")
|Scan Rooms?||No||Possible, but not recommended||Yes (Use Interior Mode)|
Photogrammetry with Autodesk Recap: This software allows you to upload a series of photographs of an object to their servers to generate a 3D model that can be downloaded. Students can get free access to the program, but is put on a slower "student queue" when processing photos to generate a model.
Similar softwares: Agisoft Metashape (Formerly Agisoft Photoscan)