opencv dilate-erode

#include<opencv2/opencv.hpp>
#include<opencv2/core/core.hpp>
#include<opencv2/imgproc/imgproc.hpp>
#include<iostream>
using namespace cv;
using namespace std;
Mat  g_srcImage,g_dstImage;
int g_nTrackbarNumber = 0;  //0 腐蚀 1膨胀
int g_nStructELementSize = 3;


void Process();
void on_TrcackBarNUmChange(int ,void*);
void on_ElementSizeChange(int,void*);
int main()
{
g_srcImage = imread("1.jpg");
if(!g_srcImage.data)
{
printf("read jpg error\n");
return -1;
}
namedWindow("yuantu",WINDOW_AUTOSIZE);
imshow("yuantu",g_srcImage);



namedWindow("dilate-erode", WINDOW_AUTOSIZE);
Mat element = getStructuringElement(MORPH_RECT,Size(g_nStructELementSize*2+1,g_nStructELementSize*2+1),Point(g_nStructELementSize,g_nStructELementSize));
erode(g_srcImage,g_dstImage,element);
imshow("dilate-erode",g_dstImage);



createTrackbar("dilate-erodepic","dilate-erode",&g_nTrackbarNumber,1,on_TrcackBarNUmChange);
createTrackbar("kernelsize","dilate-erode",&g_nStructELementSize,21,on_ElementSizeChange);
while(char(waitKey(1)) != 'q')
{}
}
void Process()
{
Mat element = getStructuringElement(MORPH_RECT,Size(g_nStructELementSize*2+1,g_nStructELementSize*2+1),Point(g_nStructELementSize,g_nStructELementSize));
if(g_nTrackbarNumber == 0)
{
erode(g_srcImage,g_dstImage,element);
}
else
{
dilate(g_srcImage,g_dstImage,element);
}
imshow("dilate-erode",g_dstImage);
}


void on_TrcackBarNUmChange(int,void *)
{
Process();
}
void on_ElementSizeChange(int,void *)
{
Process();

}

运行效果如图：