中文说明：svm 图像分割 用kmeans得到两类分割的图，在显示的图像中用鼠标取点得到2*num个坐标位置的二维向量，前num个为正样本，后num各为负样本
English Description：
SVM image segmentation uses kmeans to get two kinds of segmented images. In the displayed image, mouse points are used to get two-dimensional vectors of 2 * num coordinate positions. The first num is positive sample, and the last num is negative sample