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 :
更值得玩味的是，当完美日记试图告别过去重营销、轻研发的模式，转向强调产品、收缩营销投入时，非但没有迎来口碑与销量的反转，反而在市场中越发边缘化。
，推荐阅读Line官方版本下载获取更多信息
Что думаешь? Оцени!
There are three main sets in the launch, based on some of the most iconic, fan-favorite creatures from Pokémon's 30-year history. Those include Pikachu, of course, as well as Eevee, Charizard, Venusaur, and Blastoise, all recreated in Lego brick form. Pokémon fans young and old can continue their trainer journey and catch (build?) them all brick by brick.