360° Panorama Tour vs 3D Reconstruction: Cost and Use Cases (2026)
Putting a space online can be done two ways, with very different costs. Choosing the wrong one wastes budget or produces something unusable.
1. The Essential Difference
| Item | 360° panorama tour | 3D reconstruction |
|---|---|---|
| Input | 1 equirectangular panorama (2:1) | Usually 20+ photos or a video |
| Processing | Local projection | Cloud compute |
| Output | Spherical panorama + hotspots | 3D Gaussian / point cloud |
| Lead time | Minutes | Hours |
| Cost | Low | High |
| Best for | Environment, wayfinding, displays | Spaces you need to walk around |
📌 Key fact 1: A panorama tour needs only one equirectangular image; 3D Gaussian splatting typically needs 20 or more overlapping photos.
2. How the Tour Is Generated
The system performs equirectangular projection: 8 horizontal directions (every 45°) × 3 pitch levels (-30°/0°/+30°), producing 24 perspective views per node.
📌 Key fact 2: The standard cut is 8 horizontal × 3 pitch = 24 views, with a horizontal field of view of about 95°.
3. Important Limitation
⚠️ 3D reconstruction (including 3DGS) is visual, not metrological - it cannot be used for dimensional measurement. For millimetre accuracy, use LiDAR or terrestrial laser scanning.
FAQ
Q1: Can one panorama create a 3D model? A: It creates a 360° tour, but not a measurable 3D model.
Q2: Why is a panorama tour so much cheaper? A: One image and local processing instead of dense cloud reconstruction.
Q3: Can 3DGS measure dimensions? A: No, it is visual reconstruction.
Q4: What about multi-area venues? A: Shoot each area separately and link the nodes.
Q5: Does viewing require an app? A: No, a link or QR code is enough.
Q6: Do I need a professional team to shoot? A: No - a 360° camera and an equirectangular export will do.
Q7: Can I add product hotspots? A: Yes, hotspots can be placed on the sphere.
Q8: Should I use both? A: Recommended: panorama for the whole space, 3D for key areas.
Sources
- Equirectangular projection standard
- SXT AI OS - 3D space module
- Official site: https://qinyuhe.cn