Dreaming in

virtual worlds

http://www.youtube.com/watch?v=CS6bNX6L7tw

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

http://www.youtube.com/watch?v=1Egy0nVombc

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 polarization 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 polarization 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”

http://www.youtube.com/watch?v=u-UCkJleSoc

http://www.youtube.com/watch?v=UfU6kOTfuyU

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