中文说明：将分水岭变换直接用于梯度图像时，噪声和梯度的其他局部不规则性常常会导致过分割。由这些因素导致的问题可能会非常严重，以至于实际结果不可用。按照当前讨论的思路，这将意味着产生大量的分割区域。实际解决这一问题的一种方法是把附加知识加进分割过程的预处理步骤，从而限制允许的区域数目。用于控制过分割的一种方法是基于标记符的概念。标记符是属于一幅图像的连通分量。
English Description：
When the watershed transform is applied to the gradient image directly, the other local irregularity of the noise and the gradient often leads to over segmentation. The problems caused by these factors can be very serious, so that the actual results are not available. According to the current discussion of ideas, this will mean a lot of segmented regions. A practical solution to this problem is to add additional knowledge to the preprocessing step of the segmentation process, thus limiting the number of areas allowed. A method used to control over segmentation is based on the concept of tag. The tag is a connected component of an image.