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2. Shadowgraphy (performing art) - Wikipedia

   en.wikipedia.org/wiki/Shadowgraphy_(performing_art)

   The French entertainer Félicien Trewey was interested in the art of Chinese shadow puppetry called Ombres Chinoises (known in china as the pi ying xi(皮影戏)), which means "Chinese shadows". He popularized the art of hand shadows when he developed shadows of famous silhouettes. It then became popular in Europe in the 19th century.

3. Non-photorealistic rendering - Wikipedia

   en.wikipedia.org/wiki/Non-photorealistic_rendering

   The majority of NPR techniques applied to 3D geometry are intended to make the scene appear two-dimensional. NPR techniques for 3D images include cel shading and Gooch shading. Many methods can be used to draw stylized outlines and strokes from 3D models, including occluding contours and Suggestive contours. [7]

4. Shading - Wikipedia

   en.wikipedia.org/wiki/Shading

   Different lighting models can be combined with different shading techniques — while lighting says how much light is reflected, shading determines how this information is used in order to compute the final result. It may for example compute lighting only at specific points and use interpolation to fill in the rest. The shader may also decide ...

5. Shadow mapping - Wikipedia

   en.wikipedia.org/wiki/Shadow_mapping

   Shadow mapping or shadowing projection is a process by which shadows are added to 3D computer graphics. This concept was introduced by Lance Williams in 1978, in a paper entitled "Casting curved shadows on curved surfaces."

6. Shadow volume - Wikipedia

   en.wikipedia.org/wiki/Shadow_volume

   Shadow volume is a technique used in 3D computer graphics to add shadows to a rendered scene. It was first proposed by Frank Crow in 1977 [1] as the geometry describing the 3D shape of the region occluded from a light source. A shadow volume divides the virtual world in two: areas that are in shadow and areas that are not.

7. Shadowgraph - Wikipedia

   en.wikipedia.org/wiki/Shadowgraph

   Shadowgraph is an optical method that reveals non-uniformities in transparent media like air, water, or glass. It is related to, but simpler than, the schlieren and schlieren photography methods that perform a similar function.