如前所述，Drupal页面可以定义一个或多个区域，并且每个区域可以包含一个或多个块，或者不包含任何块。
As mentioned, a Drupal page can define one or more regions, and each region can contain no, some, or many blocks.
提出了基于四叉树分形编码的水印算法，通过在不同寻找区域中搜索最佳匹配定义域块来嵌入水印。
This paper proposes a watermarking algorithm based on quadtree fractal coding, which is to search for the optimized matched domain blocks in different regions and to embed the watermarking.
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