Features
A rendered image can be understood in terms of a number of visible features. Rendering research and development has been largely motivated by finding ways to simulate these efficiently. Some relate directly to particular algorithms and techniques, while others are produced together.
- shading — how the color and brightness of a surface varies with lighting
- texture-mapping — a method of applying detail to surfaces
- bump-mapping — a method of simulating small-scale bumpiness on surfaces
- fogging/participating medium — how light dims when passing through non-clear atmosphere or air
- shadows — the effect of obstructing light
- soft shadows — varying darkness caused by partially obscured light sources
- reflection — mirror-like or highly glossy reflection
- transparency (optics), transparency (graphic) or opacity — sharp transmission of light through solid objects
- translucency — highly scattered transmission of light through solid objects
- refraction — bending of light associated with transparency
- diffraction — bending, spreading and interference of light passing by an object or aperture that disrupts the ray
- indirect illumination — surfaces illuminated by light reflected off other surfaces, rather than directly from a light source (also known as global illumination)
- caustics (a form of indirect illumination) — reflection of light off a shiny object, or focusing of light through a transparent object, to produce bright highlights on another object
- depth of field — objects appear blurry or out of focus when too far in front of or behind the object in focus
- motion blur — objects appear blurry due to high-speed motion, or the motion of the camera
- non-photorealistic rendering — rendering of scenes in an artistic style, intended to look like a painting or drawing
Read more about this topic: Rendering (computer Graphics)
Famous quotes containing the word features:
““It looks as if
Some pallid thing had squashed its features flat
And its eyes shut with overeagerness
To see what people found so interesting
In one another, and had gone to sleep
Of its own stupid lack of understanding,
Or broken its white neck of mushroom stuff
Short off, and died against the windowpane.””
—Robert Frost (1874–1963)
“All visible objects, man, are but as pasteboard masks. But in each event—in the living act, the undoubted deed—there, some unknown but still reasoning thing puts forth the mouldings of its features from behind the unreasoning mask. If man will strike, strike through the mask!”
—Herman Melville (1819–1891)
“These, then, will be some of the features of democracy ... it will be, in all likelihood, an agreeable, lawless, particolored commonwealth, dealing with all alike on a footing of equality, whether they be really equal or not.”
—Plato (c. 427–347 B.C.)