dither

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dither

[′dith·ər]
(communications)
A technique for representing the entire gray scale of a picture by picture elements with only one of two levels (“white” and “black”), in which a multilevel input image signal is compared with a position-dependent set of thresholds, and picture elements are set to “white” only where the image input signal exceeds the threshold.
(control systems)
A force having a controlled amplitude and frequency, applied continuously to a device driven by a servomotor so that the device is constantly in small-amplitude motion and cannot stick at its null position. Also known as buzz.
References in periodicals archive ?
Not content with presiding over a catastrophic recession, a national debt akin to a tin-pot Third World dictatorship, a mismanaged illegal war, a drop in education standards and a collapse in national morale, the Ditherer managed to pull off an electoral performance that made Michael Foot look politically astute.
Mr Cameron's lack of action only shows that when it comes to doing the "right and moral thing", he is the real ditherer.
Political ditherer though she be, Cleo actually sets Tobiessen's madcap plot (more cleverly constructed than it appears on its silly surface) spinning into motion.
Harper, don't make hasty, ill-considered purchases just to prove that you are a decisive prime minister and not a ditherer, dawdler, and freeloader like your predecessors.
But considerable blame also rests with the Ditherer in Chief.
Boris Johnson - the ditherer whose heart people suspected, like Corbyn's, was actually on the other side.
If you want a ditherer for PM then vote Tory, if you want a Margaret Thatcher for PM then vote UKIP, but if you want sanity then vote Labour.
If he is half the man he pretends to be - and not the ditherer that he actually is - he''d create a photo-opportunity of picking up the phone and making sure he sorted things out.
rather than the Italian, and that's because it was coined not by a ditherer in a toga, but by a 12th-century Gallic vilain.
SO we learned that the Ditherer of Downing Street has installed solar panels at his family home in Scotland.
The man who until only recently was seen as a dour, plodding, unsmiling ditherer has suddenly blossomed forth in the most unexpected way.