I am trying to make a PointCloud mapping user with multiple kinects on Processing. I get the user's front and back with 2 kinects on opposite sides and generate both PointClouds.

The trouble is that the PointClouds X/Y/Z are not syncronized, it just puts the two of them on screen and it surely looks messy. There is a way to calculate or make a comparison between them, to translate the second PointCloud to "join" the first? I could translate the position manually, but if I move the sensors it will go off again.