Talk:Occlusion

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In computer graphics and image processing, occlusion is the effect of one object in 3-D space blocking another object from view.

I was trying to disambiguate the 3-D link, but I was not sure if I should link it to Dimension or 3D computer graphics. Since computer graphics is linked in the sentence, and 3D refers to "space", my preference goes to Dimension but I think discussion is necessary. --Theroachman 12:56, 5 September 2005 (UTC)[reply]

Left over material from page revision[edit]

I've reworked this page back into the WP:MOSDAB format. There was a lot of additional material not appropriate for a DAB page, but I hated to discard it, so I've copied it below if someone wants to integrate it into the appropriate articles elsewhere. Chuckiesdad/Talk/Contribs 18:49, 14 March 2010 (UTC)[reply]

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Occlusion is a term indicating that the state of something, which is normally open, is now totally closed.

In cardiology, the term is often used to refer to blood vessels, arteries or veins which have become totally blocked to any blood flow. For issues of artery occlusion, see stenosis, atheroma, and coronary catheterization.

In ophthalmology or orthoptics, occlusion refers to the patching of a person's good eye, in order for their weaker eye to receive more visual stimuli - as in amblyopia.

In audiology, occlusion refers to the phenomenon that when persons with normal hearing close off the opening into the ear canal, the loudness of low pitched sounds (presented by bone conduction) increases.

In dentistry, occlusion refers to the manner in which the teeth from upper and lower arches come together when the mouth is closed.

In psychology, specifically memory research, occlusion is the phenomenon of items associated to the same cue as the target blocking the successful retrieval of that target, through strength dependent response competition. The tip-of-the-tongue phenomenon is an example of occlusion.

In meteorology, the term refers to the complex frontal structure formed when a cold front overtakes a warm front. It is associated with widespread, steady rainfall in advance of the occluded front. In addition to extratropical cyclones on the synoptic scale, occlusions also occur on the mesoscale, as when a rear flank downdraft occludes in a supercell thunderstorm.

In computer graphics, the term is used to describe the manner in which an object closer to the viewport masks (or occludes) an object further away from the viewport. In the graphics pipeline, a form of occlusion culling is used to remove hidden surfaces before shading and rasterizing take place.

In computer gaming audio engines, the term describes modification of the qualities of a sound that passes through or around an object so that the player experiences a greater sense of realism. For example, a sound that comes from behind a door realistically sounds as if it passed through a door.

In physics, it means an enclosure of cool air around warm air that rises in the atmosphere

In molecular biology an occluded state of a protein, mostly membrane spanning transport proteins, refers to a conformational state in which the substrate binding site is inaccessible from either side of the membrane.
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