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 :
刘年丰：是的，之前行业可能追求的是一个“既能搬箱子、又能收拾桌子、还能叠衣服”的通用模型。
，更多细节参见51吃瓜
尽管很多从业者都关注到老年人的情感陪伴需求，但他们调研过一部分老年人使用群体，大多数人对AI陪伴玩具的刚需还是集中在健康管理和安全上，情感端依赖真人陪护，因此对AI玩具的接受度还在早期。
В России ответили на имитирующие высадку на Украине учения НАТО18:04