形态学滤波（基于opencv4.4）

【核心代码】

#include<opencv2/opencv.hpp>
#include<opencv2/highgui/highgui.hpp>
#include<opencv2/imgproc/imgproc.hpp>

using namespace cv;
using namespace std;

Mat srcImage, dstImage;
int g_nElementShape = MORPH_RECT;//内核形状为矩形

int g_nMaxIterationNum = 10;
int g_OpenCloseNum = 0;
int g_TopBlackHatNum = 0;


void on_OpenClose(int, void*)
{
	Mat element = getStructuringElement(g_nElementShape, Size(g_nMaxIterationNum * 2   1, g_nMaxIterationNum * 2   1), Point(g_nMaxIterationNum, g_nMaxIterationNum));
	if (g_OpenCloseNum==0)
	{
		morphologyEx(srcImage, dstImage, MORPH_OPEN, element);
	}
	else
	{
		morphologyEx(srcImage, dstImage, MORPH_CLOSE, element);

	}
	imshow("开/闭运算", dstImage);
}



void on_TopBlackHat(int, void*)
{
	Mat element = getStructuringElement(g_nElementShape, Size(g_nMaxIterationNum * 2   1, g_nMaxIterationNum * 2   1), Point(g_nMaxIterationNum, g_nMaxIterationNum));
	if (g_TopBlackHatNum == 0)
	{
		morphologyEx(srcImage, dstImage, MORPH_TOPHAT, element);
	}
	else
	{
		morphologyEx(srcImage, dstImage, MORPH_BLACKHAT, element);

	}
	imshow("顶/黑帽运算", dstImage);
}
int main()
{
	system("color 5E");
	srcImage = imread("C:\\Users\\ADMIN\\Desktop\\图片\\图片1.jpg");
	if (!srcImage.data)
	{
		printf("读取图片失败，请检查路径是否正确 \n");
		return false;
	}
	namedWindow("原始图");
	imshow("原始图", srcImage);

	//开闭运算
	namedWindow("开/闭运算",1);
	createTrackbar("开/闭", "开/闭运算", &g_OpenCloseNum, 1, on_OpenClose);
	on_OpenClose(g_OpenCloseNum, 0);
	createTrackbar("内核值", "开/闭运算", &g_nMaxIterationNum, g_nMaxIterationNum*2 1, on_OpenClose);
	on_OpenClose(g_nMaxIterationNum, 0);


	//顶黑帽运算
	namedWindow("顶/黑帽运算", 1);
	createTrackbar("顶/黑帽", "顶/黑帽运算", &g_TopBlackHatNum, 1, on_TopBlackHat);

	createTrackbar("内核值", "顶/黑帽运算", &g_nMaxIterationNum, g_nMaxIterationNum * 2   1, on_TopBlackHat);

	while (1)
	{
		int c;
		//执行回调函数
		on_TopBlackHat(g_OpenCloseNum, 0);
		on_TopBlackHat(g_nMaxIterationNum, 0);
		//获取按键
		c = waitKey(0);
		//按下键盘Q或者Esc,程序退出
		if ((char)c == 'q' || (char)c == 27)
			break;
		//按下键盘按键1，使用椭圆（Elliptic）结构元素MORPH_ELLIPSE
		if ((char)c == 49 )
		{
			g_nElementShape = MORPH_ELLIPSE;
		}
		//按下键盘按键2，使用椭圆（Rectangle）结构元素MORPH_RECT
		else if ((char)c == 50)
		{
			g_nElementShape = MORPH_RECT;
		}
		//按下键盘按键3，使用十字形（Cross-shaped）结构元素MORPH_CROSS
		else if ((char)c == 51)
		{
			g_nElementShape = MORPH_CROSS;
		}
		//按下键盘按键3，使用十字形（Cross-shaped）结构元素MORPH_CROSS
		else if ((char)c == 50)
		{
			g_nElementShape = MORPH_CROSS;
		}




	}

	return 0;

}