OpenCv和向量将图片转换为YUV然后反转

Question

我在使用openCV时遇到问题，我需要将图片分成矢量转换为YUV配色方案，然后再将其反转，这是我的新手，而且我不知道如何解决问题，我也无法找不到任何解决方案。问题是，将其从YUV更改回基本图像后，基本图像与我刚开始时的图像不同（它们看起来应该相同），看起来好像缺少了颜色成分或某些东西。谁能帮我解决我的问题？

#include <QCoreApplication>
#include <iostream>
#include "opencv2/opencv.hpp"
#include "opencv2/core/core.hpp"
#include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp"

using namespace cv;
using namespace std;


int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    //reading picture from pc and importing it into Mat variable
    Mat zdjecie, zdjeciePoZmianie, zdjecieOdwr, pom, zdjMerge;

    //zdjecie variable - have basic picture in it
    //zdjeciePoZmianie - new picture after converting to YUV and spliting it
    //zdjecieOdwr - to inverse the process to have basic picture from YUV pic
    //zdjMerge - variable when i merged vector into

    zdjecie=imread("/home/major/Downloads/Dan.jpg",CV_LOAD_IMAGE_COLOR);
    imshow("pic before operations",zdjecie);

    //Separating picture components
    vector<Mat> vec1, vec2;
    cvtColor(zdjecie, zdjeciePoZmianie, CV_BGR2YUV);
    split(zdjeciePoZmianie,vec1);

    pom=Mat::zeros(Size(zdjeciePoZmianie.cols, zdjeciePoZmianie.rows),CV_8UC1);
    vec2.push_back(vec1[0]);
    vec2.push_back(vec1[1]);
    vec2.push_back(vec1[2]);

    merge(vec2,zdjMerge);

    imshow("after changing to YUV", zdjMerge);

    //Reversing to the basic pic
    cvtColor(zdjeciePoZmianie, zdjecieOdwr, CV_BGR2YUV);
    imshow("Reversed back", zdjecieOdwr);
    return a.exec();
}

这就是YUV正常的样子