Lowest Latency with java and OpenCV

I'm using opencv 3.0 on Java, and I want the lowest LATENCY possible. I'm grabbing images from DirectShow of Windows 8 (connected to a BlackMagic Intensity Pro USB 3.0). How can I do it? What improvement should I have to make? To capture new frames I just use: import org.opencv.videoio.VideoCapture; ... VideoCapture sorgente = new VideoCapture(0); sorgente.grab(); sorgente.retrieve(mat);