vector of cv::Mat

Question

My class contains a vector of cv::Mat images.

class reconstructed_object
{
    private:
    std::vector<cv::Mat> raw_images;

    public:
    reconstructed_object();
    show_images();
}

In its constructor 3 images from my harddrive are read using cv::imread("path") and pushed into the vector.

reconstructed_object::reconstructed_object()
{
    raw_images.push_back(cv::imread("path_1").clone());
    raw_images.push_back(cv::imread("path_2").clone());
    raw_images.push_back(cv::imread("path_3").clone());
}

void reconstructed_object::show_images()
{
    for (int i=0; i < raw_images.size(); i++)
    {
        cv::imshow("raw_image", raw_images[i]);
        cv::waitKey(1000);
    }
}

After reading all the suggestions about deep copy I used the "clone"-method. However the vector is filled with three times the image from "path_3". How can I save the different pictures in the vector?

Answer 1

Try:

cv::imshow("raw_image"+ std::to_string(i), raw_images[i]);

I suggest that problem is that all your windows where you pass images have the same name. So, each next member of the vector just overlaps the images before.