Opencv learning log 13 corrosion, expansion, opening and closing operations

Preface

This article mainly describes the basic operation of image processing : corrosion 、 Expansion and opening and closing operations .

One 、 Code

#include <opencv2/opencv.hpp>
#include <iostream>
using namespace cv;

int main()
{
    
	cv::Mat srcMat = imread("C://Users//john//Desktop//1.jpg", 0);
	cv::Mat resMat;
	cv::Mat res2Mat;
	cv::Mat kernel(5, 5, CV_8UC1);
	// imshow("src", srcMat);
	//threshold(srcMat, resMat, 100, 255, THRESH_BINARY);
		adaptiveThreshold(srcMat, resMat, 255, ADAPTIVE_THRESH_GAUSSIAN_C, THRESH_BINARY_INV, 15, 10);
	imshow("res", resMat);
// morphologyEx(resMat, res2Mat, 0, kernel, Point(-1, -1), 1, BORDER_CONSTANT,morphologyDefaultBorderValue());// corrosion 
// morphologyEx(resMat, res2Mat, 1, kernel, Point(-1, -1), 1, BORDER_CONSTANT, morphologyDefaultBorderValue());// inflation 
// morphologyEx(resMat, res2Mat, 2, kernel, Point(-1, -1), 1, BORDER_CONSTANT, morphologyDefaultBorderValue());// Open operation 
	morphologyEx(resMat, res2Mat, 3, kernel, Point(-1, -1), 1, BORDER_CONSTANT, morphologyDefaultBorderValue());// Closed operation 
	imshow("res2", res2Mat);
	waitKey(0);
}

summary

1. The code can run directly , If you don't understand, please leave a message .