Interaction of Light and Materials

Posted by  on Oct 29, 2013  in Articles
Interaction of Light and Materials

The look of a material depends on what happens to light hitting that material. How much is reflected to our eyes and in what fashion. How this differs over wavelengths of color and over the angle at which we see the surface reflecting light.

Additive and Subtractive Color

Posted by  on Oct 22, 2013  in Articles

White light can be thought of as a combination of wavelengths, containing all of the colors in the visible spectrum. Red light has long waves compared to blue light in the other end of the spectrum. When light interacts with a material, the light is partially absorbed by that material. If some wavelengths of light […]

Value References

Posted by  on Apr 29, 2013  in Articles
Value References

When texturing a scene, I find it useful to look at images taken under ambient lighting conditions. Use the Blur / Average filter on selected parts of the image in Photoshop to get some basic albedo colors to start out with. Just keep in mind that this works best for diffuse materials, and do not […]

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