Generate Realistic Materials in Unity Using Photometric Stereo Processing
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Two Unity 3D content-creation experts will demonstrate how to capture real-world materials, such as leather, fabrics, plastics, rubber and non-reflective metals, using low-cost, easily-accessible photography equipment and the photometric stereo technique, and then bring them into Unity for developing automotive applications.
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Generate Realistic Materials in Unity Using Photometric Stereo Processing
- 1. 1
- 2. GenerativeArt–MadewithUnity Capturing Real-World Materials for Real-Time DevelopmentAn Introduction to photometric stereo processing Luc Vo Van Solution’s engineer, Unity Montreal luc@unity3d.com Camille Rail Photometry artist, Unity Montreal camiller@unity3d.com
- 3. Why and the advantages - Easy material creation - Inexpensive - Artist friendly - Complete control over the process - HDRP learning tool
- 4. Automotive Material Library Coming out 2018.3 for free on the Asset Store Over 120 materials/variations such as car paint, caliper, leather, etc.
- 6. Create realistic looking materials in Unity using photometric stereo processing Our solution
- 7. What is photometric stereo processing?
- 10. What you’ll need Tripod Manfrotto 190x Aluminium AmazonBasics Tripod Aflash Photonics plastic polarizing film + Cardboard + Tape Canon 6D with a 50mm lens + Hoya 49mm Circular Polarizing and UV HRT Filter Canon ST-E3-RT Speedlite Transmitter Canon Speedlight 600 EX-RT Flash with a 7cm carboard taped on top X-Rite ColorChecker Passport Photo + Chrome balls Material samples Spare batteries and chargers Tape iPad with Canon Camera app installed
- 11. At what cost? INSERT PRICE $$$
- 12. STEP 1 SETTING UP THE ROOM
- 13. Room setup ≈ 100 – 120 cm
- 14. Make sure your environment isn’t reflecting too much
- 16. STEP 2 POLARIZER SET UP
- 17. What’s a polarizing filter? A filter that supresses polarized light. It is used in photography to reduce or remove reflections.
- 19. Why is it useful? By capturing images with and without reflection, we can easily isolate the light information and create a base color map and smoothness map
- 20. Using the polarizing filter
- 21. Polarizing UV HRT Filter Making sure the polarizing UV filter arrow is at the top
- 22. Finding the right angle
- 23. Using the polarizing filter
- 24. Room setup ≈ 100 – 120 cm
- 25. 1 2 3 4 5 6 7 8
- 27. STEP 3 FLASH AND CAMERA SETTINGS
- 28. Setting up the flashes
- 29. 29 Setting up the flashes
- 30. Lower the exposure until the ColorChecker is dark Using the remote control app
- 31. STEP 4 CAPTURE
- 32. Chrome ball Color checker Put down the color checker and the chrome ball
- 34. For a result of 18 photos - 1 photo of the color checker with reflection - 1 photo of the color checker without reflection - 8 photos of the material with reflection - 8 photos of the material without reflection
- 35. THE DIGITAL PART
- 36. What you’ll need Photoshop Batch file to convert raw images to TIFF Dabarti Capture Unity Tiling Tool Knald (Or any sotfware that can generate maps from a normal map) Unity with HDRender Pipeline
- 38. No color correction With color correction Color correction
- 40. STEP 6 AVERAGE ALBEDO AND SMOOTHNESS
- 41. Smoothness Average no reflection Average with reflection - = Isolating light information to get a smoothness map
- 45. What is photometric stereo processing?
- 47. Dabarti normal computation Dabarti flatten normal Flattening the normal map
- 49. Unity Tiling Tool Settings
- 50. Rotation
- 52. Cancel Gradient
- 53. Border Size H
- 54. Offset H
- 56. Fade Mask Border H
- 60. STEP 9 INTEGRATING WITH UNITY
- 63. QUESTIONS?