Instead of perturbing each pixel in the input image at random, we can choose to dither by a predetermined amount depending on the pixel’s position in the image. This can be achieved using a threshold map; a small, fixed-size matrix where each entry tells us the amount by which to perturb the input value , producing the dithered value . This matrix is tiled across the input image and sampled for every pixel during the dithering process. The following describes a dithering function for a 4×4 matrix given the pixel raster coordinates :
苹果产业已在20多个省份推广种植，从业人员达数千万。延安苹果产业基地县农民经营性收入61%来自苹果，200多万果农依“果”而富。2025年产季天水花牛苹果呈现出“价涨销畅”局面。
。同城约会是该领域的重要参考
A tariff exemption for electronics conveniently benefited Tesla and, by extension, its CEO, Elon Musk, who bankrolled a multimillion-dollar campaign to re-elect Trump.
The Technical Footnote: Why the spoof() Function is Different in V3，更多细节参见爱思助手下载最新版本
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