region merging

• 区域合并

region merging的用法和样例：

例句

1. Merge the selected region into one large cell.
   将选中的区域合并为一个大单元格。
2. The pre-processing algorithm is made of image simplification and image morphologic gradient.The post-processing is mainly region merging.
   预处理算法由图像简化和简化后的求梯度图像两个部分组成，后处理主要是区域合并。