photometric stereo

Photometric stereo, a computer vision technique also known as "shape from shading"

"A theory of photometric stereo for a class of diffuse, non-Lambertian surfaces".

It also has important implications for human vision and computer vision problems, such as shape from shading, photometric stereo, etc.

Techniques using a fixed camera and known lighting are called photometric stereo techniques, or "shape from shading".

Photometric stereo is a technique in computer vision for estimating the surface normals of objects by observing that object under different lighting conditions.

Photometric stereo has since been generalized to many other situations, including non-uniform albedo, extended light sources, and non-Lambertian surface finishes.