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 :
Opens in a new window。爱思助手下载最新版本是该领域的重要参考
。业内人士推荐heLLoword翻译官方下载作为进阶阅读
Some features are not available for Mac.
Last year, Ford set a new industry record: It issued 152 safety recalls, almost twice the previous high set by General Motors back in 2014. More than 24 million vehicles were recalled in the US last year, and more than half—13 million—were either Fords or Lincolns. By contrast, Tesla issued 11 recalls, affecting just 745,000 vehicles.。业内人士推荐旺商聊官方下载作为进阶阅读