title: Does OpenGL display image faster than OpenCV?
body: <p>I am using OpenCV to show image on the projector. But it seems the <strong>cv::imshow</strong> is not fast enough or maybe the data transfer is slow from my CPU to GPU then to projector, <strong>so I wonder if there is a faster way to display than OpenCV?</strong> </p>
  
  <p>I considered <strong>OpenGL</strong>, since OpenGL directly uses GPU, the command may be faster than from CPU which is used by OpenCV. Correct me if I am wrong.</p>