说明：  点云的分割是图像处理非常重要。基于几何特性可以很容易地分割算法导致过高或过低分割。而根据颜色而没有算法使用几何信息也可能导致奇怪的结果。此外，很多算法使用的颜色的阈值作为一个指定数目，也可能导致过度或在分割。
(The segmentation of point cloud is highly important for image processing. Segmentation algorithms based on geometrical properties could easily lead to over or under segmentation. While algorithms based on color which did not use the geometrical information may also lead to odd results. Besides, many algorithms use the color threshold as a specified number may also lead to over or under segmentation.)