By Will Standring and Alice Gledhill
Transforms don't execute until the consumer pulls. There's no eager evaluation, no hidden buffering. Data flows on-demand from source, through transforms, to the consumer. If you stop iterating, processing stops.。关于这个话题，91视频提供了深入分析
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lowerdir is the read-only directory (composefs) containing file metadata, and datadir is the directory containing the data (erofs).
We can see that the threshold map distributes perturbations more optimally than purely random noise, resulting in a clearer and more detailed final image. The algorithm itself is extremely simple and trivially parallelisable, requiring only a few operations per pixel.，这一点在Line官方版本下载中也有详细论述