How to convert SFML image to opencv mat in C++?

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C++

OpenCV

image-processing

Below code Is used to convert a OpenCV Mat image Into SFML image. How to convert SFML image back to Mat image?

cv::Mat frameBGR, frameBGRA;
sf::Image image;
cv::cvtColor(frameBGR, frameRGBA, cv::COLOR_BGR2RGBA);
image.create(frameRGBA.cols, frameRGBA.rows, frameRGBA.ptr());

If texture or sprite can't be converted to OpenCV Mat,then is it possible to convert sf::Image to OpenGL and convert it back to cv::Mat

sf::Texture texture;
sf::Event event;
sf::Sprite sprite;
texture.loadFromImage(image);
sprite.setTexture(texture);

Update I referred this post, but still was not able to convert.

void* buffer = & image; 
        cv::Mat image_mat = cv::Mat(cvSize(500,500),CV_8UC4,buffer,cv::Mat::AUTO_STEP); 	
        cvtColor(image_mat, converted,CV_RGBA2BGR);

It crashes at below line of code (when i display image )

imshow("img", converted);

c++ - How to create an image in opencv from a buffer that holds image in RGBA format - Stack Overflow

What I have tried:

I could only convert OpenCV Mat to SFML.