openCV3形态学操作（提取水平与垂直直线）

//形态学操作
#include
#include
using namespace std;
using namespace cv;
int main(int argc, char** argv) {const char* file &＃61; "./12.png";Mat img &＃61; imread(file);cvtColor(img, img, CV_BGR2GRAY);threshold(img, img, 150, 255, THRESH_BINARY);imshow("io", img);erode(img, img, getStructuringElement(MORPH_RECT, Size(img.cols/16, 25)));dilate(img, img, getStructuringElement(MORPH_RECT, Size(25, img.rows/16)));//如果将getStructuringElement(MORPH_RECT, Size(img.cols/16, 25))与getStructuringElement(MORPH_RECT, Size(25, img.rows/16))//交换位置将会留下水平直线&＃xff0c;img.cols/16当线段超过这么长时才考虑是否可以留下来&＃xff0c;小于这个长度的一定留不下来namedWindow("img", WINDOW_NORMAL);imshow("img", img);waitKey(0);return 0;
}