Before we get into the code, we need to understand why this was always going to end in a bloodbath. The entire history of DRM is, at its core, a history of trying to give someone a locked box while simultaneously handing them the fucking key. The film and music industries have been losing this battle since the first CSS-encrypted DVD was cracked in 1999.
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 :，这一点在Line官方版本下载中也有详细论述
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highWaterMark: 10,
Авторы фейковой новости ссылаются на материал корреспондента «Газеты.ру» Игоря Рябова. Однако в авторской колонке журналиста такой материал отсутствует.