dreaming in virtual worlds
TRANSCRIPT
Dreaming in
virtual worlds
Dreaming in virtual worlds / Speaker
Jaroslav Stehlik @jaroslavstehlik
Past:8 year of high-end advertising photography & postproduction5 years of pc and mobile gamedev at Silicon Jelly2 game titles: Mimpi & Mimpi Dreams
Present:DIVR Labs - Blue Effect VRDigital dreamer at dream.digital
Dreaming in virtual worlds / Photogrammetry
Photogrammetry
Reconstruction of reality from regular photos.
Aerial Close range
Dreaming in virtual worlds / Photogrammetry
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.
Dreaming in virtual worlds / Photogrammetry
Close range
- Small or medium objects “Rocks, trees”- Camera on tripod or handheld- Multiple operators
Dreaming in virtual worlds / Photogrammetry
Close range - equipment
- Any DSLR- Sharp lens, ideally fixed- From 20mm to 35mm- Circular polarisation filter- Tripod- LIDAR “optional”
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”
Dreaming in virtual worlds / Photogrammetry
Close range - techniques
- Avoid any shiny or reflective surfaces- Use polarisation filter for reflection reduction
Dreaming in virtual worlds / Photogrammetry
Close range - techniques
- Shoot subjects with good texture- Or use LIDAR “Laser scanner”
- Good
- Bad
Dreaming in virtual worlds / Photogrammetry
Weather
- Cloudy weather is the holy grail- Soft shadows- No hard light
- Good
- Bad
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!”
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”
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