curr = buckets[i];
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 :
Samsung’s Unpacked event midweek revealed three new phones and two sets of earbuds, but the real standout, as usual, is the Galaxy S26 Ultra. This year, the Ultra actually features a bit of genuine tech innovation — and no, we don’t mean it folds.，更多细节参见im钱包官方下载
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