调整四叉树分解的块值 qtsetblk
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采用基于线性四叉树的格网索引对点云数据建立索引，对点云数据进行分块提取；
The grid index based on linear quadtree is used to index the point cloud data, extracting the point cloud on the block.
首先提出了基于边缘信息测度的四叉树自适应分块的DCT压缩算法。
Firstly, an adaptive segmentation DCT coding method based on edge information measure is developed.
四叉树数据结构的特性与其邻域寻找算法，并将多分辨率影像数据按照四叉树结构进行分块处理；
The unique properties of quad tree data structure and divided pyramid image into partitions by using quad tree methods;
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