A plane surface approximation method for image coding and its quad tree scheme are presented in this paper.

该文提出了一种平面逼近图像编码方法及其四叉树实现方案。

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A new method of tree scheme knowledge representation is proposed. It enables the recursive query process to consult the states of the extensional database, making the algorithm more efficient.

提出了一种树形知识表示方法，使递归查询可参考事实库状态，从而获得更高效的算法。

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Two protesters spent 48 hours in the tree, which is due to be felled as part of the Seven Dials junction improvement scheme.

BBC: Brighton protesters come down from elm tree ahead of talks

The scheme includes a number of measures to protect the environment by improving wildlife habitats, tree cover and watercourses, the county council said.

BBC: Heysham-M6 road link given go-ahead