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 vector group; GCV组； 短句来源 system and vector B(?) 系统和矢量B(?) 短句来源 VECTOR SCIAGRAPHY 矢量投影法 短句来源 Application of the Adjacency Matrix 邻接矩阵的应用 短句来源 Magnetization Vector Tomography 磁矢量层析成像(英文) 短句来源

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 In understanding drawings, it is an important issue to recognize hatched regions from vectorized mechanical drawings. Vectorization is performed based on Primitive Regions Adjacency Graphs. At start of a hatched line, other lines belonging to the same hatched region are searched based on Vectors Adjacency Graphs. After extracting graphic enclosing the hatch, contours of the hatch are attained. Then a new hatched region is redrawn directed by the contour, and hatched lines extracted are deleted.... In understanding drawings, it is an important issue to recognize hatched regions from vectorized mechanical drawings. Vectorization is performed based on Primitive Regions Adjacency Graphs. At start of a hatched line, other lines belonging to the same hatched region are searched based on Vectors Adjacency Graphs. After extracting graphic enclosing the hatch, contours of the hatch are attained. Then a new hatched region is redrawn directed by the contour, and hatched lines extracted are deleted. Some applications show that the algorithm can deal with many cases and is effective and robust. 在矢量化后识别剖面域是进行图形语义理解的一个重要部分。本文先对扫描工程图样进行基于单义域邻接图的矢量化。然后基于矢量邻接图以剖面线段为特征图元,根据剖面线构成语法规则,搜索属于同一剖面域的所有剖面线段,并根据剖面线提取包围图元(包括内环和外环),进而求取轮廓线,重新绘制剖面线,同时删除已经提取的剖面线段。文中对多种剖面域模式进行了识别。
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