IBM 表示,单纯把 COBOL 转成其他语言,并不能复制这些能力,也无法解决真正的现代化难题,包括数据架构重构、运行时替代、事务一致性、灾备能力、加密体系以及与周边系统的集成等。
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support. There is something of an inverse vertical integration penalty here:
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 :