In 3D graphics, a technique developed by Henri Gouraud in the early 1970s that computes a shaded surface based on the color and illumination at the corners of every triangle. Gouraud shading is ...

In 3D graphics, a technique developed by Phong Bui-Tuong in the mid-1970s that computes a shaded surface based ... The surface normals at the triangle's points are used to compute a surface ...