实现图像的阈值分割、用水线阈值法分割图像、对矩阵进行四叉树分解、将图像分为文字和非文字的两个类别和形态学梯度检测二值图像的边缘。很有用-The threshold of image segmentation, water line threshold image segmentation, on the matrix quadtree decomposition, text and images into two categories and the non-text binary image