For Gouraud Shading we have terms and definitions in 2 topics. The topics are Computer Graphics and Real Time 3D.

Gouraud Shading (Computer Graphics)

Gouraud shading, one of the most popular smooth shading algorithms, is named after its French originator, Henri Gouraud. Gouraud shading, or color interpolation, is a process by which color information is interpolated across the face of the polygon to determine the colors at each pixel. It assigns color to every pixel within each polygon based on linear interpolation from the polygon's vertices. This method improves the 'blocky' (see Flat Shading) look and provides an appearance of plastic or metallic surfaces.

Gouraud Shading (Real Time 3D)

A shading method, named after the French mathematician Henri Gouraud (pronounced on-REE grrr-ROW). Each triangle's color is created by interpolating the vertex colors that are located at each corner of the triangle. In other words, the interior of each triangle is a smooth gradient between the colors of the three vertices. The vertex colors are usually created dynamically from the lighting in the scene, although the artist can instead assign specific colors to each vertex. Gouraud shading has a smooth look, but can look strange when using polygons with solid colors on them.

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