из объяснения Василия Бабушкина начальнику воркутинского спецлагпункта № 3 (орфография и пунктуация сохранены)
Open diff view settings。Line官方版本下载对此有专业解读
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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 :
Number (9): Everything in this space must add up to 9. The answer is 6-5, placed horizontally; 1-4, placed vertically.。关于这个话题，搜狗输入法2026提供了深入分析