原图像->转灰度图->二值化->开操作。
提取水平线卷积盒使用水平矩形，提取竖直线卷积盒使用竖直矩形。
代码演示：
#include #include #include using namespace std;using namespace cv;int main(int argc, const char* argv[]){utils::logging::setLogLevel(utils::logging::LOG_LEVEL_SILENT);//设置日志输出Mat src = imread("E:/picture/12.jpg");Mat dst,result;Mat src_gray=Mat::zeros(src.size(),src.type());putText(src, "OpenCv_vigny", Point(50, 50), FONT_HERSHEY_COMPLEX, 1.0,Scalar(12, 12, 127), 1, LINE_8, false);cvtColor(src, src_gray, COLOR_BGR2GRAY);adaptiveThreshold(~src_gray, dst, 255, ADAPTIVE_THRESH_MEAN_C, THRESH_BINARY, 15, -2);Mat hline = getStructuringElement(MORPH_RECT, Size(src.cols / 16, 1), Point(-1, -1));Mat cline = getStructuringElement(MORPH_RECT, Size(1, src.rows / 16), Point(-1, -1));morphologyEx(dst, result, MORPH_OPEN, hline, Point(-1, -1), 1);imshow("input", src);imshow("thresh", dst);imshow("result", ~result);waitKey(0);destroyAllWindows();return 0;}
输出结果：