Pixelation
From The Art and Popular Culture Encyclopedia
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In computer graphics, pixelation (or pixellation in British English) is caused by displaying a bitmap or a section of a bitmap at such a large size that individual pixels, small single-colored square display elements that comprise the bitmap, are visible. Such an image is said to be pixelated (pixellated in the UK).
Deliberate pixelation
In some cases, the resolution of an image or a portion of an image is lowered to introduce pixelation deliberately. This effect is commonly used on television news shows to obscure a person's face or to censor nudity or vulgar gestures, and is also used for artistic effect. This effect is called pixelization. Making pixels easily visible is also a main feature in pixel art which is where the graphics are made in low resolutions for effect.
See also
