提取输入图像的MSER区域，对得到的MSER区域二值图像进行连通域分析，先粗过滤一些明显不符合字符的区域，然后对过滤后的图像进行闭运算。闭运算之后再进行一次细滤除，最后得到包围文本区域的包围盒。-The MSER region of the input image is extracted, and the connected MSER region binary image is analyzed. Finally, some areas that do not meet the characters are filtered, and then the filtered image is closed. Closed operation after a fine filter, and finally get surrounded by the text area of the bounding box.