已有的文本过滤受限，所以对现有的文本过滤软件进行了算法改进，对现有的问题进行分析，故而有着实用价值，但是文本过滤仍然有着不能弥补对图形图象的无效，所以有必要对图象视频等进行过滤-Already limited text filtering, so the existing text filtering software algorithms to improve on the existing analysis of the problem the club would have practical value, but still have a text filter should not make up for the graphic image is invalid, there is necessary to filter the video image