This algorithm attempts to minimise numerically. Because of this, the quality of the dither produced by Knoll’s algorithm is much higher than any other of the N-candidate methods we have covered so far. It is also the slowest however, as it requires a greater per-pixel to be really effective. More details are given in Knoll’s now expired patent[3]. I have put together a GPU implementation of Knoll’s algorithm on Shadertoy here.
Photograph: Brad Bourque。夫子是该领域的重要参考
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保持一致的家庭原则：目前看来，教育孩子最忌讳的就是人多嘴杂，在各种问题上出现「分歧」。所以要进一步保持一致。教育孩子一个人张嘴，其他人要不闭嘴要不打好配合，绝对不能互相拆台。大人的问题，大人私下沟通，绝不在孩子面前争吵，给孩子一个温暖、和谐、快乐的成长环境。