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OpenCV Programming 1

1. Display data type. #include "pch.h" #include <opencv2/highgui/highgui.hpp> #include <opencv2/imgproc.hpp> #include <iostream> using namespace cv; using namespace std; int main(int argc, char** argv) { int i = 2; while (i != 0) { cout << "enter image martix size"; cin >> i; if (i == -1) { break; } Mat M(i, i, CV_8UC3, Scalar(0, 0, 255)); cout << "M = " << endl << " " << M << endl << endl; } }
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Example Intro 100: Display image.

#include "pch.h" #include <opencv2/highgui/highgui.hpp> #include <iostream> using namespace cv; using namespace std; int main(int argc, char** argv) { if (argc != 2) { cout << " Usage: display_image ImageToLoadAndDisplay" << endl; return -1; } Mat image; String value = argv[1]; image = imread(argv[1], IMREAD_COLOR);   // Read the file if (!image.data)                              // Check for invalid input { cout << "Could not open or find the image" << std::endl; return -1; } namedWindow("Display window", WINDOW_AUTOSIZE);// Create a window for display. imshow("Display window", image);                   // Show our image inside it. waitKey(0);                                    ...
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Open CV: How to read message.

Image
// HellowWorldAPP.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include <opencv2/opencv.hpp> using namespace cv; int main(int argc, char** argv) { // Read the image file Mat image = imread("MyPic.JPG"); imshow("test", image); waitKey(0); return 0; }
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