Non-photorealistic rendering
From The Art and Popular Culture Encyclopedia
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Non-photorealistic rendering (NPR) is an area of computer graphics that focuses on enabling a wide variety of expressive styles for digital art, in contrast to traditional computer graphics, which focuses on photorealism. NPR is inspired by other artistic modes such as painting, drawing, technical illustration, and animated cartoons. NPR has appeared in movies and video games in the form of cel-shaded animation (also known as "toon" shading) as well as in scientific visualization, architectural illustration and experimental animation.
Artistic rendering
Rendering in visual art and technical drawing means the process of creating, shading and texturing of an image, especially a photorealistic one. It can also be used to describe the quality of execution of that process. This is synonymous with illustrating.
The emphasis of the term is on the correct reproduction of light-and-shadow and the surface properties of the depicted objects, not on the emotional impact, composition, or other more generic qualities. Unsurprisingly, most often it is used in relation to the more exacting, meticulous techniques like pencil or airbrush.
In an artistic rendering visual information is interpreted by the artist and displayed accordingly using the chosen medium. The non-photorealistic rendering area of computer graphics develops tools and techniques to enable interpretive rendering in digital media.
