Geoffrey L. Barrows
  • Male
  • Washington, DC
  • United States
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Geoffrey L. Barrows's Discussions

 

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Latest Activity

Patrick Poirier commented on Geoffrey L. Barrows's blog post 360 degree stereo vision and obstacle avoidance on a Crazyflie nano quadrotor
"Hello Goeffrey, Have you made progress on this project ? Can we expect a commercial product soon ? Best Regards"
Jul 9
Laser Developer commented on Geoffrey L. Barrows's blog post 11 gram Arduino-powered laser rangefinder
"It's a joke about the 2N2222 (better known as the 2N-quad 2) as being one of the most common transistors on the market and in the professional electronics world if you use this type of "common part" then you are clearly an amateur.…"
Apr 28
James Dermelj commented on Geoffrey L. Barrows's blog post 11 gram Arduino-powered laser rangefinder
"Hi guys! I'm new in electronics and I don't really get why you wrote: "2N2222 transistor (I know I know...)" Is it bad to use a transistor for such a purpose? If so, why?"
Apr 28
Mike T commented on Geoffrey L. Barrows's blog post 360 degree stereo vision and obstacle avoidance on a Crazyflie nano quadrotor
"Fantastic project.  Any updates on testing or availability?"
Apr 8
Geoffrey L. Barrows commented on Gary Mortimer's blog post US drone registration rules to be announced today (Monday)
"I'm sure the folks at BitCraze are happy. :)"
Dec 14, 2015
Jiaqi Hu commented on Geoffrey L. Barrows's blog post 360 degree stereo vision and obstacle avoidance on a Crazyflie nano quadrotor
"Awesome! I’m making a small aircraft platform (nano UAS), a UAV of coax helicopter, the rotor of its diameter is about 20cm, it can be level flight stable and flexible at a low altitude. This kind of flying vehicle only flies in the…"
Nov 24, 2015
Stephen Crampton commented on Geoffrey L. Barrows's blog post 360 degree stereo vision and obstacle avoidance on a Crazyflie nano quadrotor
"A major milestone Geoffrey.  Great work.  You have a solid foundation for some serious indoor exploration autonomy.  Do let us all know how you get on with the white walls, low light and avoidance above/below.  I, for one, am…"
Nov 24, 2015
armen t commented on Geoffrey L. Barrows's blog post 360 degree stereo vision and obstacle avoidance on a Crazyflie nano quadrotor
"put me down for atleast 3 maybe 5. keep it up"
Nov 20, 2015

Profile Information

About Me:
Founder of Centeye, Inc.
www.centeye.com
www.embeddedeye.com
Please tell us a bit about your UAV interest
Visual navigation for MAVs, embedded vision, bio-inspired signal processing
Hometown:
Washington, DC

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Geoffrey L. Barrows's Blog

360 degree stereo vision and obstacle avoidance on a Crazyflie nano quadrotor

Posted on November 19, 2015 at 4:28pm 19 Comments

(More info and full post here)

I've been experimenting with putting 360 degree vision, including stereo vision, onto a Crazyflie nano quadrotor to assist with flight in near-Earth and indoor environments. Four stereo boards, each holding two image sensor chips and lenses, together see in all directions except up and down. We developed the image sensor chips…

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Visually stabilizing a Crazyflie, including in the dark

Posted on March 28, 2014 at 6:44am 10 Comments

I've been working on adding visual stabilization to a Crazyflie nano quadrotor. I had two goals- First is to achieve the same type of hover that we demonstrated several years ago on an eFlite 'mCX. Second is to do so in extremely low light levels including in the dark,…

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What can bees tell us about seeing and flying at night?

Posted on March 21, 2014 at 11:47am 3 Comments

(Image of Megalopta Genalis by Michael Pfaff, linked from Nautilus article)

How would you like your drone to use vision to hover, see obstacles, and otherwise navigate, but do so at night in the presence of very little light? Research on nocturnal insects will (in my opinion) give us ideas on how to make this possible.

A recent …

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Hardware Startup Groups Unite!

Posted on August 9, 2012 at 5:43pm 1 Comment

Recently I started the DC Hardware Startup meetup as a complement to the many Web 2.0-ish entrepreneur meetups in the DC area and elsewhere, and then reached out to the organizers of similar meetups around North America. Two are about a year old- the …

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11 gram Arduino-powered laser rangefinder

Posted on June 29, 2012 at 1:49pm 22 Comments

I was pleased to see a cool laser rangefinding project on Kickstarter- I hope this project gets fully funded (and I'm a backer). I've actually been experimenting myself with structured light and laser rangefinding using our ArduEye hardware and thought I'd share it…

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Comment Wall (4 comments)

At 11:36pm on November 14, 2008, Scott James said…
Thanks Geoffrey.
At 6:01pm on March 2, 2010, Bhargav Gajjar said…
Hi Geoffrey I have a special MAV how hard is it to program your optic flow gizmos ?
At 7:29pm on March 2, 2010, Geoffrey L. Barrows said…
Bhargav- Do you mean integrate them with your system or actually program the devices themselves?
At 11:58pm on September 10, 2012, Andrew Comport said…

Hi Geoffrey, yes we have had a project on bridge inspection using the Infotron drone. You can find a little more information about the project here:

http://www.i3s.unice.fr/~comport/research/visual-servoing-of-drones


Your work looks pretty interesting too... I will have to have a look over it when I find some free time...

Best, Andrew

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