OpenCV （八）形态学操作：膨胀与腐蚀

膨胀：

类似于卷积操作，卷积核可以是任何形状，把卷积核覆盖的区域中像素值最大的像素点，赋值给卷积核的锚点。

腐蚀：

与膨胀类似，把最小值赋值给锚点。

#include<opencv2/opencv.hpp>
#include<iostream>	

using namespace std;
using namespace cv;

void dilate_fun(int, void*);
void erode_fun(int, void*);

Mat src;
Mat image_dilate;
Mat image_erode;

int element_dilate = 3;
int element_erode = 3;
int max_size = 11;

int main(int argc, char** argv) {
	src = imread("D:/OpenCVprj/image/test3.jpg");
	imshow("src", src);
	namedWindow("image_dilate", CV_WINDOW_AUTOSIZE);
	namedWindow("image_erode", CV_WINDOW_AUTOSIZE);

	createTrackbar("size", "image_dilate", &element_dilate, max_size, dilate_fun);
	createTrackbar("size", "image_erode", &element_erode, max_size, erode_fun);
	dilate_fun(0, 0);
	erode_fun(0, 0);
	waitKey(0);
	return 0;

}

void dilate_fun(int, void*) {
	int s = 2 * element_dilate + 1;
	Mat kernel = getStructuringElement(MORPH_RECT, Size(s, s), Point(-1, -1));
	dilate(src, image_dilate, kernel);
	imshow("image_dilate", image_dilate);
	return;
}

void erode_fun(int, void*) {
	int s = 2 * element_erode + 1;
	Mat kernel = getStructuringElement(MORPH_RECT, Size(s, s), Point(-1, -1));
	erode(src, image_erode, kernel);
	imshow("image_erode", image_erode);
	return;
}

　　

　　

结果：