code: public void setCamera2( double fx , double fy , double skew , double cx , double cy ) {
  		PerspectiveOps.pinholeToMatrix(fx,fy,skew,cx,cy,K2);
  		PerspectiveOps.invertPinhole(K2,K2_inv);
  	}
docs: Specifies known intrinsic parameters for view 2