如何在OpenCV 3.0.0中使用BackgroundSubtractorMOG和Java？

I'm trying to run BackgroundSubtractorMOG on a video file, but the javadoc (Version 3.0.0) says that I need to provide a long as an argument, while the online documentation (Version 2.4.9) says that the constructor requires either no argument, or int,int,double. When I give it a long, I then get an error that the constructor is not visible. Looking into the BackgroundSubtractorMOG class, the constructor is protected, and I have no idea why. I've tried using it both static and non-static methods, but no luck. I have not been able to find a single example of someone successfully using BackgroundSubtractorMOG with java online. Any ideas or examples of how to invoke the constructor?I'm trying to run BackgroundSubtractorMOG on a