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 :
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这是马克思主义立场观点方法的鲜明表达，是面向未来征程的根本遵循。党中央决定，在全党开展树立和践行正确政绩观学习教育，这是今年党的建设的重要任务。悟其理，行其道，方能一往无前、行稳致远。
他補充道：「在策略上存在大量迴旋餘地，可以暫時無視規則以獲取行銷影響力。」
Sometimes his application is rejected within 15 minutes of submission, he said.