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#photometric #scanning #tutorial #materials #photography #capture #photogrammetry
In this video I present and share my experience with the photometric stereo technique, which is one of a few basic reality capture techniques used in PBR material and atlas texture creation. While it struggles with large and medium sized shapes, it is probably the best technique to capture micro detail. Its based on a few years of my research, so I really hope you are gonna enjoy it.
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Cheers!
Grzegorz
In details I present:
0:00 Intro
5:23 Introduction to Photometric Stereo
8:42 Camera Mount System
12:39 Light vs Shadow Quality
13:41 Props for Testing
17:41 Horizontal Shadow Direction
19:39 Vertical Shadow Angle
22:04 Slim vs. Point Light - Light Shape
25:13 Slim LED vs Point Flash power comparison
29:47 Light Pollution
32:13 Light Bounces and Inverse Square Law
38:20 The Background
42:06 Close Distance Light Bounces
43:28 Cross Surface Gradient
45:31 Scale and Color References
47:07 Chrome Ball
48:49 Color based shape misinterpretation
49:49 Cross Polarisation
52:19 Capturing Transluency
54:10 Workflow - Software
57:52 Summary