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 ?
Since the star's flux is constant over time (be careful not to choose a variable star), the flux per second will remain constant when it is within the linear range of the CCD, but will start to drop off as the CCD's anti-blooming gate kicks in.
The ML8300 is an anti-blooming camera, meaning that bright stars will not have distracting streaks appearing in the images.
Featuring a Kodak KAF-8300 anti-blooming, monochrome CCD, it boasts a generous 8.3-megapixel array of 5.4-micron-square pixels (18-by-13.5-mm imaging area) and a peak quantum efficiency of 60%.
This anti-blooming camera utilizes the Kodak KAI4021M chip with a 15.15-mm-square, 2,048- by-2,048 array of 7.4-micron pixels.