Extract Geometry Properties 可撷取几何物件属性
In view of the Descriptive Geometry and Mechanical Drawing and the status of the situation, that the purpose of teaching should be more scientifically designed to extract the essence of courses.
针对《画法几何及机械制图》课程的现状和面临的形势，指出其教学设计的宗旨应该是更科学地提炼课程的精髓。
We extract the geometry features according to the rotational axis and the profile.
根据旋转轴和轮廓线，提取碎片的几何特征；
Second, extract the edge of the object image and boundary tracking to get the 2D line drawing and extract the topology information and geometry information of them.
其次对物体真实图像作轮廓提取和边界跟踪，得到二维图像的线架图，同时提取出它的拓扑结构信息和几何信息；
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