Quartz Crystal
This is a demonstration of how Gaussian Splatting performs on a refractive object.
The transitions between the refractions in GS is more gradual than in reality.
It looks rather realistic, but it is not a true-to-physics representation.
Despite of that, it does demonstrate that 3DGS is very well capable of displaying structures that lay inside a transparent or translucent surface.
Specimen
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- Size: approx. 27 x 19 x 32 mm (the box drawn around it before the scan).
Capture
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- Camera: Sony A7R5 camera (61 Mp) - 1/40 sec. - f11 - ISO 100 - JPG.
- Lens: Laowa 90 mm 1-2 x Macro at ~ 0.5 x (field of view approx. 68 x 45 mm)
- Focus step: 2.0 mm between frames.
Scan
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- Scanned with: MICROscanR - a 3D focus-stacking robot. (microscanr.com)
- 705 viewpoints (optimally distributed along a spherical scan shape)
8 rings of 72 viewpoints (every 5° around), from 0° to 77° elevation, + 129 bridging viewpoints between the rings.
- Average stack-depth per VP: 13 frames, ranging from 9-21 (dynamically assigned per viewpoint).
- Total pictures: 8.888 (55 GB)
- Scan time: 2h23m (+ 32 min for the calibration scan).
- Scan date: 16-10-2026.
Splat
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- Total splats: 2.914.431
- Start point cloud: 617.250 points
- image resolution used: 3840 x 2560 px
- Software: LichtFeld Studio
Lighting
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- Lights: Object in diffuse light field between 2x side-beam round (28 cm) LED panels, 2 x 24 Watt
+ 1x Microscope LED beamer, fixed on front of lens.
- Background: black velvet.
Post processing
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- Completely scripted using Helicon and Reality Scan (CLI) as external software
- All steps progress-monitored in web based UI.
- Camera poses were transferred from a scan of a calibration object (doodle ball), taken from the exact same VPs without focus stacking.
- Total post-processing time: ~2h35m (of which focus stacking 40 min).