docs: public boolean checkRectified( Point2D_F64 left , Point2D_F64 right ) {
  		// rectifications should make them appear along the same y-coordinate/epipolar line
  		if( Math.abs(left.y - right.y) > toleranceY )
  			return false;
  
  		// features in the right camera should appear left of features in the image image
  		return right.x <= left.x + toleranceX;
  	}