构建形状从几何原语，从而创造数学描述的对象。
Construct shapes from geometric primitives, thereby creating mathematical descriptions of objects.
几何形状、灰度级、颜色，尤其是农产品表面的反射光谱特性，可以用于农业机器人识别操作对象。
The geometrical shape, gray level, color, and reflected spectrum especially of farm production, can be used for agricultural robots to recognize the operated objects.
该方法可以从离散的点集中提取出具有某种拓扑几何形状特征的目标对象。
Some kinds of objects with the geometric characteristics wishing to be needed are extracted from the discrete point-sets.
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