code: public static void ensureDeterminantOfOne(List<Homography2D_F64> homography0toI) {
  		int N = homography0toI.size();
  		for (int i = 0; i < N; i++) {
  			Homography2D_F64 H = homography0toI.get(i);
  			double d = CommonOps_DDF3.det(H);
  //			System.out.println("Before = "+d);
  			if( d < 0 )
  				CommonOps_DDF3.divide(H,-Math.pow(-d,1.0/3));
  			else
  				CommonOps_DDF3.divide(H,Math.pow(d,1.0/3));
  //			System.out.println("determinant = "+ CommonOps_DDF3.det(H));
  		}
  	}
docs: Scales all homographies so that their determinants are equal to one
  @param homography0toI