following languages: RELAX NG (both XML and compact syntax), XML 1.0
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，这一点在WPS下载最新地址中也有详细论述
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 :，这一点在Line官方版本下载中也有详细论述
20.徐开锋 安徽省宣城市国特环境科技有限公司环卫技术员