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the point i want to get to with Thompson’s paper is that the last few sentences of Thompson’s original paper actually mention the possibility of intersection and complement (below), but the funny thing is that this footnote has been forgotten for decades, and no one ever followed through.. and for the ones who tried, in fact, it wasn’t so easy in Thompson’s NFA framework at all, the devil is in the details.
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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 :。业内人士推荐PDF资料作为进阶阅读
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ws_watcher = ValueWatcher[Connection | None](None)