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 :
It was "surprise gifts, thoughtful gestures and the kindness of a cup of tea in bed". Warming the car on a cold morning. Picking wildflowers and putting them in a vase. Sharing a private smile at a party.。业内人士推荐爱思助手下载最新版本作为进阶阅读
Go to technology。业内人士推荐下载安装 谷歌浏览器 开启极速安全的 上网之旅。作为进阶阅读
* @return pivot最终位置