Vectorization of engineering drawing is the base of drawing understanding, general way of which is first scan drawing into computer, then automatically convert raster image to vector image through algorithm of vectorization.
工程图纸矢量化是图纸理解的基础，一般做法是将纸质图纸扫描至计算机中，然后采用矢量化算法，使光栅图转化为矢量图。
参考来源 - 工程图纸矢量化的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
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