An algorithm is presented for converting the linear quadtree representation of a simply connected region into a 4-direction chain code description of the region's boundary.
本文提出一种算法实现单连通区域的线性四元树表示转换成区域边界的4 -方向链码描述。
According to the parting direction and the description of boundary, the parting line of a body is decided and then the parting surface is designed.
根据开模方向，结合零件的边界描述确定零件上的分模线，进而对分模面进行设计。
The identification and characterization of lithologic pinch-out boundary is always a problem in the description of subtle traps.
岩性尖灭线的识别与刻画，一直是隐蔽圈闭描述的难题。
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