blooming

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blooming

[′blüm·iŋ]
(electronics)
Defocusing of television picture areas where excessive brightness results in enlargement of spot size and halation of the fluorescent screen.
An increase in radarscope spot size due to an increase in signal intensity.
(materials)
The migration of sulfur or other substances to the surface of a sample of rubber, causing discoloration.

bloom

1. The formation of a thin film of material on the surface of paint causing it to appear lower in gloss and milky in color. It varies in composition depending on the nature of the paint, drying conditions, etc., and may sometimes be removed with a damp cloth.
2. A type of efflorescence that appears on brickwork.
3. A discoloration or change in appearance of the surface of a rubber product (as sulfur bloom and wax bloom) caused by the migration of a liquid or solid to the surface.
4. A defect on a freshly varnished surface, appearing as a cloudy film.
5. A surface film on glass; usually results from the deposition of smoke or vapor.

blooming

A condition with older CCD devices that causes distortion at the pixel level. It occurs when the electrical charge created exceeds the storage capacity of the device and spills over into adjacent pixels. Newer CCDs incorporate anti-blooming circuitry to drain the excess charge. See CCD sensor.
References in periodicals archive ?
Each camera incorporates Atmel's 1-million pixel frame transfer area array CCD (TH7888A) with an anti-blooming feature.
Anti-blooming technology on each pixel, along with the exclusive Olympus TruePic TURBO Image Processor, helps to eliminate undesirable "artifacts," "stepping," "purple fringing" or "moire" in an image.
The AVIIVA M4 addresses these applications by taking advantage of features already present in the M2 such as extreme mechanical precision, improved spectral response and superior anti-blooming behavior.