Another way to approach dithering is to analyse the input image in order to make informed decisions about how best to perturb pixel values prior to quantisation. Error-diffusion dithering does this by sequentially taking the quantisation error for the current pixel (the difference between the input value and the quantised value) and distributing it to surrounding pixels in variable proportions according to a diffusion kernel . The result is that input pixel values are perturbed just enough to compensate for the error introduced by previous pixels.
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For more than a decade, a trend has emerged in standardized testing data for students in Utah. After years of increasing reading and math scores, results from the state’s National Assessment of Educational Progress testing for fourth- and eighth-graders have shown a steady and continuing downturn.
于是，两个巨人的碰撞不可避免。接下来发生的，就是长达两个世纪的 奥斯曼-波斯战争 (Ottoman–Persian Wars)。，这一点在51吃瓜中也有详细论述
Data centers need huge crews during construction—and far fewer workers once they’re up and running. There will be maintenance, retrofits, and expansions, but not at the same scale as the initial build-outs. For workers, that can mean moving on when a project wraps, or facing periods without a job lined up. During the 2008 recession, for example, nearly one in four of IBEW’s construction members were out of work.