Opencv膨胀-dilate函数

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

using namespace std;
using namespace cv;

Mat srcImage, dstImage;
int g_nDilateValue = 0;

//有滚动条事件时，可以进入回调函数
void on_Trackbar(int, void *)
{
	Mat element = getStructuringElement(MORPH_RECT, Size(2 * g_nDilateValue + 1, 2 * g_nDilateValue + 1));
	dilate(srcImage, dstImage, element);
	imshow("【膨胀窗口】", dstImage);
}

int main()
{
	srcImage = imread("tiger.jpg");
	imshow("【原图】", srcImage);
	dstImage.create(srcImage.size(), srcImage.type());

	namedWindow("【膨胀窗口】");
	createTrackbar("Value", "【膨胀窗口】", &g_nDilateValue, 100, on_Trackbar);
	on_Trackbar(g_nDilateValue, 0);

	waitKey(0);

	return 0;
}