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 ?
The sensors offer an anti-blooming feature that prevents the whiteout of images taken with a flash, as well as low power consumption that enables more efficient power management and longer battery life.
The chip has anti-blooming protection (to prevent streaks on bright stars), high sensitivity, and low dark current, which is further reduced by a regulated, two-stage thermoelectric cooler that can bring the chip to as much as 35[degrees] C below ambient air temperature.
This highly integrated CMOS active pixel sensor offers excellent image quality with low power consumption, low dark current, high sensitivity and anti-blooming characteristics - in other words, better pictures.
Most anti-blooming CCD detectors do not have a linear response to photons across their entire dynamic range, and because of slight differences in each CCD, no two cameras will have the exact same range of linear response.
The ML8300 is an anti-blooming camera, meaning that bright stars will not have distracting streaks appearing in the images.