The Math Forum

Search All of the Math Forum:

Views expressed in these public forums are not endorsed by NCTM or The Math Forum.

Math Forum » Discussions » Policy and News » mathed-news

Notice: We are no longer accepting new posts, but the forums will continue to be readable.

Topic: General Interest: Smile for the Drone!
Replies: 0  

Advanced Search

Back to Topic List Back to Topic List  
Jerry P. Becker

Posts: 16,576
Registered: 12/3/04
General Interest: Smile for the Drone!
Posted: May 26, 2014 6:36 PM
  Click to see the message monospaced in plain text Plain Text   Click to reply to this topic Reply
att1.html (9.9 K)

From The Wall Street Journal, Saturday-Sunday, May 17-18, 2014. See
OK, Kids, Smile for the Drone!

The future of vacation photography? It just might be highflying,
remote-control mini helicopters outfitted with onboard cameras

By Geoffrey A. Fowler

Here's a very 2014 question: What could the technology behind
unmanned missile strikes and auto-piloted AMZN -0.03%
deliveries do for my vacation photos?

This spring break, I swapped out my regular camera for flying photo
drones. These remote-control aerial vehicles are floating tripods
that let you take pictures and videos from overhead. For as little as
$300, you can buy a device, no larger than a Panama hat, that hovers
and swoops through the air at the flick of a finger. I took mine on
trips to Joshua Tree and California wine country, and deployed them
for group photos at the beach.

Flying a drone isn't just exhilarating; it also fundamentally changed
how I think about photography. It is hard to get excited about
vintage filters on Instagram after shooting a drone selfie (call it a
"dronie") or panning hillside Napa vineyards at sunrise. A drone
allows you to move a camera in ways that might otherwise require a
helicopter and a Michael Bay budget. In the harsh desert landscape of
Joshua Tree, we climbed atop towering boulders and then had the drone
shoot a video that panned up from the ground. The footage made it
look as though we had scaled a Martian mountain-and it put ordinary
vacation movies to shame. Eat your heart out, National Geographic.

And yet, drones also give me new-tech vertigo.

Every time I launched one of these flying lawn mowers, I was a bit
terrified that I might get in trouble, hurt someone or hit something
expensive. The navigation technology built into the two popular
models that
I used, the Parrot AR.Drone 2.0 ($300) and DJI Phantom Vision+
($1,300), is idiot-resistant, but not idiot-proof. Although no
animals (or humans) were harmed in the making of this article, I did
manage to lose a drone. I think it's stuck in a palm tree.

Personal drones are the latest technology to arrive before we've
worked out all the relevant rules, both legal and ethical. A recent
Pew survey found 63% of Americans aren't keen on the idea of personal
and commercial drones buzzing around above them. The Federal Aviation
Administration is enmeshed in court battles over whether it has the
authority to regulate small drones, and the U.S. National Park
Service recently said they are not allowed. (This was after I flew
mine in Joshua Tree.)

Like Google GOOGL +1.05% Glass and GPS trackers, drones have become
symbols of tech invading our privacy: In Texas, you can be fined for
using drones to photograph without permission, and one Colorado town
proposed making it legal to shoot them out of the sky. (Voters shot
down the law instead.)

I, too, am concerned about cameras fluttering outside my bedroom
window. But we shouldn't dismiss a technology that has the potential
to empower us-safely-to record footage once available only to
big-budget Hollywood productions and news choppers. Drones have even
been used to record protests in Ukraine, Turkey and other areas. In
reality, these consumer drones tend to make terrible spy machines,
because most have cameras with wide-angle lenses and their propellers
sound like swarm of angry bees. Still, people will think you're a
jerk if you fly one too close.

It is a different story when you hover a drone close to you and your
family or fly in wide-open spaces where you aren't violating
someone's expectation of privacy. My dream is to have one follow me
around all day like the Khaleesi's dragons trained to snap photos.

The Phantom I flew does use GPS satellites to lock on a spot and stay
there, and many drones can fly preprogrammed routes. Both the Phantom
2 Vision+ and Parrot AR.Drone 2.0 give you a bird's-eye view of what
the drone is seeing right on your phone. The FAA mandates you
shouldn't take a drone more than 400 feet up.

On my vacation, high-altitude flight wasn't really a concern. I found
the most interesting shots were well below 150 feet, close enough to
the ground to see detail of people, plants and buildings. The bigger
challenges were short battery life (less than half an hour of flying
time) and maintaining eye contact with the drone to navigate it
safely, like when I wanted it to dart between yucca palms at Joshua

And then there was my disastrous pre-vacation test flight with the
AR.Drone. Without removing its safety bumpers, an accessory for
indoor use that prevents the blades from hitting anything, I launched
the drone on my back deck. Big mistake. In the wind, the bumpers
create significant drag, making the drone hard to control.

So when a breeze kicked up, the AR.Drone flew over my deck and into a
neighboring yard. I tried using the controller app on my iPhone to
bring it back, but in my panic, I confused the drone further by not
holding my phone flat-a critical navigational error, since tilting
your phone tells the drone which direction you want it to fly. My
drone kept sailing to the left. "Come back!" I hollered, as friends I
had been trying to impress cackled. Moments later, the quadcopter was
out of sight.

Mortified, I slipped notecards in mailboxes that read, "Hello
neighbor, I was flying my toy helicopter in my backyard, and I think
it might have landed in your backyard. If so, I'm sorry!" (Tip: If
you accidentally crash your drone on someone else's property, call it
a "toy helicopter.")

My very patient neighbors helped me hunt through backyards on our
block for days. Eventually, I gave up and settled on the palm-tree

Parrot CEO Henri Seydoux chided me for flying it outside with the
indoor bumpers on. He said Parrot's upcoming drone, the Bebop,
announced this week, will have a GPS-tracking capability that could
tell me exactly which palm tree is holding it captive. (It comes out
later this year and will probably cost more than the current model.)

As for the safety of these flying machines, Parrot's drones are
intended for those age 14 and up. "It isn't more dangerous than
riding a bike," Mr. Seydoux said, "but you can hurt yourself with a

For less experienced fliers, the AR.Drone seems safer to me than the
Phantom because it is less powerful. Stick your finger in the
AR.Drone's blades, and it might sting, but you won't lose a digit. Do
the same with the much more powerful Phantom, and it will hurt a lot
more. (DJI's Director of Aerial Imaging Eric Cheng told me he
survived such an incident with only a blister.)

I didn't learn to ride a bike on my own, so why should I assume I can
learn to fly a drone that way? After losing the AR.Drone, I decided
to enroll in flying school.

This week, the popular camera site PhotoJojo is launching a one-hour
drone-training class, initially available in San Francisco, that
costs $50.

I signed up for a session with PhotoJojo's co-founder Amit Gupta, an
experienced pilot who popularized the term "dronie." We met
midafternoon in San Francisco's Dolores Park, a mecca for techies and
drone photographers.

We started with a preflight ritual that involved checking for
inclement weather, loose screws or propellers, and a full battery.
Once turned on, the Phantom emitted ascending tones that made it
sound like it was arming missiles. "What is that thing? Is it going
to fly?" asked one young park-goer. "Righteous!"

Stay away from objects and go slow, counseled Mr. Gupta on our first
flight. Obvious enough. But his other advice was less intuitive: If
you ever get in trouble, just let go of the controls; the Phantom's
auto-hover mode-which uses its GPS-lock to stay in one spot, even in
a brisk wind-will kick in. "And go up if you are scared," he said,
"because up is away from the object you might crash into."

We practiced drawing imaginary squares in the sky with the drone, and
then flying circles in the air, which was a challenge. But practice
built my confidence and made me realize that you don't need "Top Gun"
skills to take some cool shots.

I was fortunate to have access to PhotoJojo's classes, but all around
the world there are communities of drone geeks who could show you the

Once you're comfortable piloting a drone, recording memorable footage
requires planning. You need to figure out if it's safe and legal to
fly in the area, and seek permission from people around you. Also
decide what kind of shot you hope to achieve (a few suggestions are
below). Recording soaring panoramas can get old, believe it or not.
Some of the most impressive footage incorporates people, both for
drama and for scale. The "dronie," for example, is a video that
starts up close and then quickly pans out and up.

Oh, and you also need to strategize a place to land. After the
Phantom's battery level slips below 30%, the app starts emitting a
loud booonk-booonk-booonk alarm. Hopefully you'll have figured out a
better spot than a palm tree.

Point your RSS reader here for a feed of the latest messages in this topic.

[Privacy Policy] [Terms of Use]

© The Math Forum at NCTM 1994-2018. All Rights Reserved.