NCUT切割，对源码进行了改进，改进后取消了只能压缩到160*160才能切割的限制-NCUT cutting, source code improvements, improved to cancel restrictions can only be compressed to 160* 160 to cut

Ncut图像分割的代码，很适合初学者学习-Ncut image segmentation code, it is suitable for beginners to learn