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 :
蚀刻高度不够，防窥区域的角度就会不足，旁边的人努努力还是能够看到屏幕上的文字。
。关于这个话题，safew官方版本下载提供了深入分析
В России ответили на имитирующие высадку на Украине учения НАТО18:04
What this means for the web
，推荐阅读快连下载安装获取更多信息
Alison Francisand
Open up the app and connect to a server in the UK。旺商聊官方下载对此有专业解读