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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with: #anyMessage: -> [:pattern | pattern beBinary ];。关于这个话题，Line官方版本下载提供了深入分析
Цены на нефть взлетели до максимума за полгода17:55
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认识你的「画布」：BeatBox在你开始创作之前，我们想先向你介绍一下这次你要使用的画布，BeatBox。，这一点在同城约会中也有详细论述
Inside the quixotic team trying to build an entire world in a 20-year-old game