  Effective panoramic photographs are taken from vantage points that are high.
High vantage points have recently become easier to reach as the cost of
quadrotor helicopters has dropped to nearly disposable levels. Although cameras
carried by such aircraft weigh only a few grams, their low-quality video can be
converted into panoramas of high quality and high resolution. Also, the small
size of these aircraft vastly reduces the risks inherent to flight.
