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 ?
NEW DELHI: Prime Minister Manmohan Singh's move to open India's protected retail sector to global supermarket giants last week surprised critics who had written him off as a policy ditherer, but he was probably motivated by expedience rather than any reformist zeal.
While I think this is a very accurate point, by the same admission, the Labour Party has costWales almost a staggering pounds 4,200m since its time in control by failing to act on changing the Barnet formula.With deep and savage public sector cuts from the Conservatives and Liberal Democrats looming,Wales needs a strong defender, not a ditherer.
Brown was branded a "ditherer" when he chose not to and Labour slumped in the polls to levels last seen under Michael Foot's disastrous leadership.
Instead of leaders worthy of the name, we had the Scottish Ditherer and Posh Boy Cameron.
The "Brown the ditherer" attack line was useful when the Tories were storming ahead in the polls, but to dig it out again when they are now just narrowly ahead suggests they now believe their bigger lead was to do with Labour''s failings, rather than their campaigning.
Nobody could accuse him of being a ditherer or of having flip-flop opinions.
When he bottled an election last year he revealed himself as a ditherer. Struggling families were dismayed by his 10p tax blunder.
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.