📜  OpenCV C++程序创建单个彩色空白图像

📅  最后修改于: 2021-05-30 20:26:44             🧑  作者: Mango

以下是对使用工具OpenCV在C++中创建单色空白图像的C++代码的说明。

要知道的事情:

(1)该代码仅在Linux环境中编译。

(2)要在Windows中运行,请使用文件“ blank.o”并在cmd中运行它。但是,如果它没有运行(系统体系结构中的问题),则可以通过对代码进行适当且明显的更改在Windows中对其进行编译,例如:使用代替

(3)编译命令:g ++ -w blank.cpp -o blank`pkg-config –libs opencv`

(4)运行命令:./ article

在运行代码之前,请确保已在系统上安装了OpenCV。

代码段:

// Title: Create a coloured image in C++ using OpenCV.

// highgui - an easy-to-use interface to 
// video capturing, image and video codecs,
// as well as simple UI capabilities.
#include "opencv2/highgui/highgui.hpp"

// Namespace where all the C++ OpenCV 
// functionality resides. 
using namespace cv;

// For basic input / output operations. 
// Else use macro 'std::' everywhere.
using namespace std;

int main()
{
    // To create an image
    // CV_8UC3 depicts : (3 channels,8 bit image depth
    // Height  = 500 pixels, Width = 1000 pixels
    // (0, 0, 100) assigned for Blue, Green and Red 
    //             plane respectively. 
    // So the image will appear red as the red 
    // component is set to 100.
    Mat img(500, 1000, CV_8UC3, Scalar(0,0, 100));
    
    // check whether the image is loaded or not
    if (img.empty()) 
    {
        cout << "\n Image not created. You"
                     " have done something wrong. \n";
        return -1;    // Unsuccessful.
    }

    // first argument: name of the window
    // second argument: flag- types: 
    // WINDOW_NORMAL If this is set, the user can 
    //               resize the window.
    // WINDOW_AUTOSIZE If this is set, the window size
    //                is automatically adjusted to fit 
    //                the displayed image, and you cannot
    //                change the window size manually.
    // WINDOW_OPENGL  If this is set, the window will be
    //                created with OpenGL support.
    namedWindow("A_good_name", CV_WINDOW_AUTOSIZE);

    // first argument: name of the window
    // second argument: image to be shown(Mat object)
    imshow("A_good_name", img);
    
    waitKey(0); //wait infinite time for a keypress

    // destroy the window with the name, "MyWindow"
    destroyWindow("A_good_name");            

    return 0;
}
// END OF PROGRAM


上一篇:

https://www.geeksforgeeks.org/opencv-c-program-to-blur-an-image/

关于作者:

Aditya Prakash是印度学院的一名本科生阿迪亚瓦达达拉信息技术学院。他主要使用C++编写代码。他的座右铭是:到目前为止一切都很好。他打板球,看超级英雄电影,踢足球,并且是回答问题的忠实粉丝。

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