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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Why we like itMost of the time, we see really stellar TV deals sell out as fast as they appeared. That's not the case for the 75-inch Hisense U7 Mini LED TV. We featured this "ultimate mid-premium" model from 2025 last week, but it's still down to just $899.99 at Amazon if you missed it. It's list price is actually near $2,000 (which you can see on the Best Buy website), which means this is an even bigger deal than Amazon is letting on. Standout features of the U7 include Mini LED backlighting with an AGLR-Antiglare low-reflection panel, up to 3,000 nits of brightness, and HDR10, HDR10+ Adaptive, HLG, Dolby Vision IQ and Dolby Atmos. Plus, it features an impressive 165Hz refresh rate, which makes it a top pick for gamers.