Physically accurate scanned materials.
What is Chaos Scans
Chaos Scans is combination of a hardware-based scanning system and a software-based rendering plugin that work together to easily create material properties for creating realistic renderings without the usual workflow of texture maps and tweaking shader settings. This enables a high level of accuracy for visualizing real-world materials in renders.
The process begins with a scan of an existing real-world object surface. Scans uses BTF (bidirectional texture functions) instead of BRDF approximations (such as Phong, Blinn, Ward, etc) to capture a materials true surface appearance, texture data, and its unique response to light.
All this information is then stored in a unique Scans material format. This scanned material is then read in to the CG scene using the Scans plugin and is ready for rendering through V-Ray without much (if any) additional tweaking required to match the original scanned material's surface.