Dreaming in Virtual Worlds (White Nights Conference Prague 2017) The official conference website — http://wnconf.com

1. Dreaming in
virtual worlds

3. Dreaming in virtual worlds / Speaker
Jaroslav Stehlik
@jaroslavstehlik
Past:
8 year of high-end advertising photography & postproduction
5 years of pc and mobile gamedev at Silicon Jelly
2 game titles: Mimpi & Mimpi Dreams
Present:
DIVR Labs - Blue Effect VR
Digital dreamer at dream.digital

4. Dreaming in virtual worlds / Photogrammetry
Photogrammetry

6. Reconstruction of reality from regular photos.
Aerial Close range
Dreaming in virtual worlds / Photogrammetry

7. Dreaming in virtual worlds / Photogrammetry
Aerial
- Must have for large scale scans
- UAV “drones” & planes
- Needs pilot with license and aviation permit based on location.
- Expensive and potentially dangerous
- Autonomous operations are practically illegal.

8. Dreaming in virtual worlds / Photogrammetry
Close range
- Small or medium objects “Rocks, trees”
- Camera on tripod or handheld
- Multiple operators

9. Dreaming in virtual worlds / Photogrammetry
Close range - equipment
- Any DSLR
- Sharp lens, ideally fixed
- From 20mm to 35mm
- Circular polarization filter
- Tripod
- LIDAR “optional”

10. Dreaming in virtual worlds / Photogrammetry
Close range - techniques
- Always circle your subject
- Images should overlap at least 30%
- Do as many shots as you can
- Sharp images are crucial
- Full manual settings
- Low ISO “avoid noise”

11. Dreaming in virtual worlds / Photogrammetry
Close range - techniques
- Avoid any shiny or reflective surfaces
- Use polarization filter for reflection reduction

12. Dreaming in virtual worlds / Photogrammetry
Close range - techniques
- Shoot subjects with good texture
- Or use LIDAR “Laser scanner”
- Good
- Bad

13. Dreaming in virtual worlds / Photogrammetry
Weather
- Cloudy weather is the holy grail
- Soft shadows
- No hard light
- Good
- Bad

14. Dreaming in virtual worlds / Photogrammetry
Scanning people
- Can be really expensive
- Needs special studio
- Ambient lighting without shadows
- Special synchronised camera rigs
- Shoot dead bodies - “No, please don’t!”

15. Dreaming in virtual worlds / Photogrammetry
Software
- Agisoft PhotoScan “Slow, but handles a lot of cases”
- Reality Capture “Fast, but cannot handle some cases”
- Autodesk Remake “Built-in editor, 3D printing”
- 123D “Good for beginners”

18. Dreaming in virtual worlds / QA
Thank You!
- Connect on twitter @jaroslavstehlik
- Do not hesitate to ask any questions
- Dream.Digital booth number 145, across Pollen VC