[人工智能]Opencv学习九（腐蚀与膨胀）

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

using namespace cv;

Mat src, dst;
char OUTPUT_WIN[] = "output image";
int element_size = 3; //设定结构元素的大小
int max_size = 21;
void CallBack_Demo(int, void*);
int main(int argc, char** argv)
{
	src = imread("3.jpg");
	if (!src.data)
	{
		printf("无\n");
		return -1;
	}
	namedWindow("input image", WINDOW_FREERATIO);
	imshow("input image", src);

	namedWindow("output image", WINDOW_FREERATIO);
	createTrackbar("Element Size:", OUTPUT_WIN, &element_size, max_size, CallBack_Demo);//调整结构大小 生成滑块调节
	CallBack_Demo(0, 0);

	waitKey(0);
	return 0;
}

void CallBack_Demo(int, void*)
{
	int s = element_size * 2 + 1;
	Mat structureElement = getStructuringElement(MORPH_RECT, Size(s, s), Point(-1, -1)); //（形状，大小，锚点位置）
	dilate(src, dst, structureElement, Point(-1, -1), 1); //膨胀
	erode(src, dst, structureElement);  //腐蚀
	imshow(OUTPUT_WIN, dst);
	return;
}

效果图