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 :
for (int i = 0; i < n; i++) {
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已知中国境内家马的出现，大约晚至距今4000年的黄河上游地区，例如属于齐家文化的甘肃永靖大何庄遗址、玉门火烧沟遗址等。而黄河中下游地区出现家马，则更晚至商代晚期的安阳殷墟遗址。
Beth Alaw WilliamsBBC Wales
另一方面，软件股的超卖现象也引发部分投资者关注抄底机会。一些机构认为，像微软这样的巨头仍有潜力在 AI 时代获益，但大多数中小型 SaaS 企业由于面临颠覆风险，其股价短期内波动幅度较大。市场分化明显，投资者需要区分 AI 领域的潜在赢家和输家。