opencv中copyTo的用法

怼烎@ 2022-04-12 04:50 330阅读 0赞

参考链接：

[https://www.cnblogs.com/phoenixdsg/p/8420716.html][https_www.cnblogs.com_phoenixdsg_p_8420716.html]

[https://blog.csdn.net/qch494562564/article/details/50589253][https_blog.csdn.net_qch494562564_article_details_50589253]

[https://blog.csdn.net/u013270326/article/details/72730812][https_blog.csdn.net_u013270326_article_details_72730812]

A.copyTo（B，C）

理解：将C与A取交集,只保留相交（相同）的地方，其余C中没有被交掉的地方都转化为黑色，然后作为最后B的体现

#include<opencv2/core/core.hpp>
    #include<opencv2/highgui/highgui.hpp>
    #include <opencv2/imgproc/imgproc.hpp>
    #include<iostream>
    using namespace cv;
    
    bool ROI_AddImage()
    {
        Mat srcImage1 = imread("1.jpg");  
        Mat logoImage = imread("5.png");
    
        if (!srcImage1.data && !logoImage.data)
        {
            std::cout << "read filed" << std::endl;
            return false;
        }
    
        Mat imageROI = srcImage1(Rect(0, 0, logoImage.cols, logoImage.rows));
        imshow("imageROI",imageROI);
        Mat mask = imread("2.png",0);
    
        logoImage.copyTo(imageROI, mask);
        //正解：将mask与logoImage取交集,只保留相交（相同）的地方，其余mask中没有被交掉的地方都转化为黑色，然后作为最后imageROI的体现
        //mask和logoImage必须大小相同?
        //logoImage.copyTo(imageROI);  //没有mask的作用
        imshow("imageROI11",imageROI);
        imshow("logoImage",logoImage);
        namedWindow("srcImage1");
        imshow("srcImage1", srcImage1);
    
    }
    void main()
    {
        ROI_AddImage();
        waitKey();
    }

结果图：![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2p1bGlhcmp1bGlhcg_size_16_color_FFFFFF_t_70][]

[https_www.cnblogs.com_phoenixdsg_p_8420716.html]: https://www.cnblogs.com/phoenixdsg/p/8420716.html
[https_blog.csdn.net_qch494562564_article_details_50589253]: https://blog.csdn.net/qch494562564/article/details/50589253
[https_blog.csdn.net_u013270326_article_details_72730812]: https://blog.csdn.net/u013270326/article/details/72730812
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2p1bGlhcmp1bGlhcg_size_16_color_FFFFFF_t_70]: /images/20220412/b64e53d11cda4b50bdf3ee349cd13411.png