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vignetting

   Also found in: Medical, Legal, Financial, Encyclopedia, Wikipedia 0.01 sec.
vi·gnette  (vn-yt)
n.
1. A decorative design placed at the beginning or end of a book or chapter of a book or along the border of a page.
2. An unbordered picture, often a portrait, that shades off into the surrounding color at the edges.
3.
a. A short, usually descriptive literary sketch.
b. A short scene or incident, as from a movie.
tr.v. vi·gnet·ted, vi·gnet·ting, vi·gnettes
1. To soften the edges of (a picture) in vignette style.
2. To describe in a brief way.

[French, from Old French, diminutive of vigne, vine (from the use of vine tendrils in decorative borders); see vine.]

vignetting [vɪˈnjɛtɪŋ]
n
1. (Miscellaneous Technologies / Photography) the technique of producing a photographic vignette, esp a portrait, by progressively reducing the amount of light falling on the photographic surface towards the edges
2. (Miscellaneous Technologies / Photography) the reduction in area of a light beam passing through a camera lens as the obliquity of the beam is increased

A method of producing a band of color or tone on a map or chart, the density of which is reduced uniformly from edge to edge.


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[ILLUSTRATION OMITTED] These are examples of photographs that belong in the Open category but which some may consider borderline and, in some cases, Creative: Borders and Frames Vignetting is often used as a framing effect.
There can be vignetting, where a photo's brighter center fades evocatively toward the edges.
However, as it relies on an analysis of the gray levels that is global, it is not well suited to tasks where the statistical aspects of the gray levels vary within the image, such as may typically be the ease with natural images which introduce shadows, vignetting, and overall gradients due to directional illumination.
 
 
 
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