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 :
默茨于25日至26日对中国进行正式访问，来自汽车、化工、生物制药、机械制造、循环经济等德优势领域的约30家头部企业高管随访，充分体现了德方深化对华务实合作的强烈意愿。
，这一点在WPS下载最新地址中也有详细论述
Plato (left) imagined humans were once whole, with four arms, four legs and two faces, before Zeus (right) split them, leaving each half searching for its other
Browse filesBrowse files，更多细节参见爱思助手下载最新版本
ExpressVPN (1-Month Plan)。关于这个话题，WPS官方版本下载提供了深入分析
an API and a user-friendly interface