paraconvex set

例句：

1. 1.The paraconvex set is a mathematical concept that describes the shape of an object when viewed from multiple perspectives.
   凸包集是描述物体从多个视角观察时形状的数学概念。
2. 2. In computer graphics, the paraconvex set is used to determine the boundaries of objects in a 3Dscene.
   在计算机图形学中，使用凸包集来确定场景中物体的边界。
3. 3. The paraconvex set is also used in image processing to identify and remove noise from images.
   凸包集也在图像处理中用于识别和去除图像中的噪声。