基于区域的分裂合并图像分割方法，包含三个m文件，predicate是分裂合并准则代码，split_test用于检测是否需要分裂，splitmerge用于分裂合并-split on the merger of regional image segmentation methods, including 3 m documents, predicate is to split the combined code guidelines, split_test for detecting the need for split splitmerge split for the merger