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 :
第五条 在中华人民共和国领域内发生的违反治安管理行为，除法律有特别规定的外，适用本法。。搜狗输入法2026对此有专业解读
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Source: Computational Materials Science, Volume 267
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