A notable resource on the topic of ordered dithering using arbitrary palettes is Joel Yliluoma’s Arbitrary-Palette Positional Dithering Algorithm. One key difference of Yliluoma’s approach is in the use of error metrics beyond the minimisation of . Yliluoma notes that the perceptual or psychovisual quality of the dither must be taken into account in addition to its mathematical accuracy. This is determined by use of some cost function which considers the relationship between a set of candidate colours. The number of candidates, the particular cost function, and the thoroughness of the selection process itself give rise to a number of possible implementations, each offering varying degrees of quality and time complexity.
You repeatedly call sourceBuffer.appendBuffer(data) to push chunks of (in our case, pre-decrypted) encoded audio data to the browser.
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stack2.pop(); // 弹出无效的候选值
但广告化并不天然等于价值创造。当所有商户都必须通过竞价才能被看到时，广告费便从增量工具演化为入场券。单个商户的理性选择，是继续加价以维持原有订单量；但从整体看，供给侧为此付出的总成本却在不断上升，而需求并未同步扩大。平台收入提高，但供给侧整体并未获得更多有效需求，反而陷入内耗式竞价。这种结构下，广告化更像是将抽佣换了一种更隐蔽的形态，甚至加剧了零和博弈。