OpenCV Mat编程练习

向右看齐 2023-07-10 15:47 3阅读 0赞

QT += core
    QT -= gui
    
    CONFIG += c++11
    
    TARGET = myOpencvTest1
    CONFIG += console
    CONFIG -= app_bundle
    
    TEMPLATE = app
    
    SOURCES += main.cpp
    
    INCLUDEPATH += C:\OpenCv4.0\include  \
                   C:\OpenCv4.0\include\opencv2
    
    CONFIG(debug, debug|release): {
    LIBS += C:\OpenCv4.0\x64\vc14\lib\opencv_world400d.lib
    #LIBS += -LC:\OpenCv4.0\x64\vc14\lib \
    #        -lopencv_world400d
    } else:CONFIG(release, debug|release): {
    LIBS += C:\OpenCv4.0\x64\vc14\lib\opencv_world400.lib
    #LIBS += -LC:\OpenCv4.0\x64\vc14\lib \
    #        -lopencv_world400
    }
    
    
    # The following define makes your compiler emit warnings if you use
    # any feature of Qt which as been marked deprecated (the exact warnings
    # depend on your compiler). Please consult the documentation of the
    # deprecated API in order to know how to port your code away from it.
    DEFINES += QT_DEPRECATED_WARNINGS
    
    # You can also make your code fail to compile if you use deprecated APIs.
    # In order to do so, uncomment the following line.
    # You can also select to disable deprecated APIs only up to a certain version of Qt.
    #DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0

#include <QCoreApplication>
    #include <iostream>
    #include <opencv2/core.hpp>
    #include <opencv2/highgui.hpp>
    #include <QDebug>
    #include <QDir>
    #include <QFile>
    
    using namespace std;
    using namespace cv;
    
    int main()
    {
        Mat A, C;                                 // 只创建信息头部分
        A = imread("C:/1.png", IMREAD_COLOR);     // 这里为矩阵开辟内存
        Mat B(A);                                 // 使用拷贝构造函数
        C = A;                                    // 赋值运算符
        Mat D(A, Rect(10, 10, 100, 100) );        // using a rectangle
        Mat E = A(Range::all(), Range(1,3));      // using row and column boundaries
        Mat F = A.clone();
        Mat G;
        A.copyTo(G);
        imshow("A",A);
        imshow("B",B);
        imshow("C",C);
        imshow("D",D);
        imshow("E",E);
        imshow("F",F);
        imshow("G",G);
    
        Vec3b vec3b = A.at<Vec3b>(0,0);
        uchar vec3b0 = vec3b[0];
        uchar vec3b1 = vec3b[1];
        uchar vec3b2 = vec3b[2];
    
        qDebug()<<vec3b0<<vec3b1<<vec3b2;
        waitKey(0);
    }